Rural Water Supply Network – blog – Page 23 – Rural water services that last, for everyone, forever

The rise of the off-grid city?

Adrian Healy reports on the findings of research undertaken in Lagos on the proliferation of domestic boreholes. This article was originally published in GeoDrilling International, and can be read here.

The conventional model of urban development focuses on centralised water service provision, where the state ensures a supply of water through storage and treatment plants and a grid of interconnected pipelines. Yet in many of our fastest growing cities, particularly in Africa and parts of Asia, this model is being turned on its head. Here, households, and business users, are increasingly turning to an ‘off-grid’ model, where they take responsibility for their own water supply. Nowhere is this more true than in the thriving megalopolis of Lagos in Nigeria, which serves as an example to practitioners around the world.

The public supply of water is estimated to reach no more than one in ten households living in Lagos State and, with a rapidly rising population, that proportion is changing every day. Despite their best efforts, the city authorities struggle to keep up with the pace of change, hampered further by an ageing infrastructure. In the absence of a reliable and convenient supply of water, it is perhaps little wonder that those who are able to secure their own water supplies do so. The result is a proliferation of domestic boreholes, as households seek to tap the accessible groundwater reserves beneath their feet. Whilst the actual number of domestic boreholes is unknown the possible numbers are staggering. Lagos State Water Corporation suggests that there may be anything up to 200,000 such boreholes in the State. Separately, a 2017 survey of 539 households living in Lagos State found that 51% reported owning their own borehole, with a further 36% reported that they shared a private borehole with other families[1].

The rise in the numbers of domestic boreholes is typically explained as a failure of the government to supply water to households. The public network often does not reach new housing developments and, where it does reach, failures of supply are commonplace. What is less often remarked on is the role played by a thriving drilling industry, fuelled by innovation and new entrants. Certainly, the development of new technologies, often imported from the oil industry or from abroad, has played a major role in driving the establishment of the borehole-drilling industry in Lagos. As costs of entry have fallen, increasing numbers of new companies have started up, offering cheap construction methods which are affordable by more and more households. Together, these factors are driving the evolution of a city that relies on off-grid water infrastructures.

This rise of the off-grid city has, in many ways, enabled the continuous expansion of Lagos as a major economic centre. For those who can afford their own borehole it has also delivered peace of mind as well as health and economic benefits, at least in the short-term. Questions though are now being asked as to the longer-term implications of this, particularly by the more professional members of the drilling and groundwater community. They point to the rise of poorly constructed boreholes as prices and drilling standards fall. They worry that this may lead to widespread contamination of the groundwater, whilst also reporting falling water tables in many areas, leading to fears of over-abstraction and the potential for saline intrusion.

Understanding whether these worries are well-founded is hampered by the lack of any system for monitoring either the quality or the amount of water being abstracted from the aquifers. State Government proposals to require owners of domestic boreholes to register these have foundered on the fear that this will be a front for the taxing of private water supplies. At the same time, our research indicates that the broader population is relaxed about the upward trend in boreholes, regarding the supply of groundwater as infinite (Figure 1). However, attitudes towards the quality of that water are more mixed, with around half concerned for the future. Evidence as to whether these beliefs are well-placed is currently lacking and requires longer-term data collection, particularly in terms of the amount of ground water available. Our research into levels of e-coli found in 40 groundwater sources demonstrates that residents’ caution about quality is well-founded (Figure 2). However, again, longer term monitoring is required if we are to better understand the risks of contamination over time.

Figure 1: Residents’ perceptions of groundwater exploitation in Lagos

Figure 2

Conclusions

In Lagos, as in many other cities, the rise of the off-grid city is due to a mix of social, economic, political and hydrogeological factors. Attempts to overcome the water gap though public provision alone are struggling with the sheer scale of investment required and speed of change in population. The rise of private provision of water supplies has fuelled the growth of the city and, in turn, has been fuelled by a rising tide of prosperity. Yet there are real concerns that the sheer proliferation of boreholes and unregulated abstraction may be storing up problems for the future. So what are the answers? Certification and licensing approaches will certainly help, but only if there is both the will and means to enforce them. Improving knowledge and awareness through education and training, both of the wider public and amongst new contractors, will also help. In the short term it may be that we need to find new mechanisms to monitor the health of our aquifers if we are not to encounter longer-term crises. Drilling contractors can be at the forefront of this exercise, helping to ensure the resilience and durability of the off-grid city.

Acknowledgements

Dr. Adrian Healy, is a Research Fellow at Cardiff University. His research focuses on themes of urban resilience to shocks and hazards. He gratefully acknowledges the support of all his colleagues involved in the RIGSS project, particularly Prof. Moshood Tijani (University of Ibadan), Prof. Ibrahim Goni (University of Maiduguri) and the British Geological Survey. Financial support was provided by NERC-GCRF ‘Building Resilience’ grant (NE/P01545X/1). Further information on the issues of domestic borehole development in Nigeria can be found here.

Figure 2 is reproduced with thanks to Dr. Kirsty Upton and the British Geological Survey, who prepared the original version.

[1] https://www.cardiff.ac.uk/__data/assets/pdf_file/0003/1090650/Perspectives_of_households_in_Lagos.pdf

An opportunity to reflect on manual drilling – UNESCO Seminar in Madrid, 2019

It was 21 years ago that I was first confronted with manual drilling. I had just started my PhD research at Cranfield University. The idea was to develop a human operated rig that could break through harder (laterite) formation, test it in an African country, and have it adopted by the private sector… in three years. Back then I could never have imagined that in 2019 (and in my mid-40’s), that I would join ten others for a seminar hosted in Madrid, Spain on the role of manual drilling to reach universal water access.

Looking back, the goals of the project were unrealistic, but we did not know that at the time, and research provides space for considerable learning. Oh, and by the way, digital cameras were very new on the market in 1998. My colleague had one, which produced recognisable, but quite grainy images.

The UK Department for International Development (DFID) Knowledge and Research (KAR) funded research project, “Low Cost Drilling” took me to Uganda, and three years of field work in collaboration with the (now) Ministry of Water and Environment and district local governments in Mukono and Mpigi. Following initial trials in a field in the UK, UNICEF and the government enabled use of the rig to provide drinking water supplies within their joint drinking water programme (called WES).

We proved that the new technology (which we called the Pounder Rig) could work, but embedding it in Uganda proved to be beyond us within the three-year period. In the meantime, I had gone from standing in a hotel lobby to make calls to landlines and leaving messages for people who were not there, to having my first mobile phone. My photographs remained analogue; a digital camera being well out of financial reach at the time.

The PhD research process taught me so much, but let me try to stay close to the topic of manual drilling. The subject of innovation diffusion was opened up, and I came to learn that the successful adoption of any technology is brought about by much more than technical aspects (my PhD thesis provides insights into this in case you wish to be one of the very few people to read it).

Over the subsequent years, I was extremely fortunate to have the chance to keep on returning to the subject of manual drilling. The collaboration with UNICEF to follow-up their efforts to support manual drilling professionalization in several countries was a welcome opportunity, leading to not only the 2015 manual drilling compendium, but also more in-depth documentation of the status quo in Nigeria and Chad. In short, we documented that by 2015 manual drilling technologies had provided drinking water sources in at least 36 countries.

There are quite a few organisations introducing manual drilling technology, including private enterprises developing new markets; local non-governmental organisations (NGOs) with overseas funding; governments relying on foreign/local expertise as well as foreign companies and NGOs (including several faith-based organisations).

However, as I started to learn while in Uganda some 20 years ago, the diffusion of innovation has different phases. Broadly speaking, there is the introduction phase, the uptake phase (also known as the valley of death, given that many technologies are not taken up), and the established phase. Mobile phones combined with digital cameras (aka SMART phones), that can enable you to make calls and take high resolution photographs are in the established phase.

Dr Pedro Martinez-Santos, the new UNESCO Chair in “Appropriate Technologies for Human Development” at the Universidad Complutense de Madrid chose the role of manual drilling technologies towards universal water access as the topic for the first seminar of the chair in April 2019. I was privileged to be among the eleven people who attended the event. I thus had the opportunity to listen to, and learn from professionals talking of specific experiences in Nigeria, Senegal, the Demographic of Congo, Zambia and Guinea Bissau as well as more widely. It was also a chance to present my own experiences and reflections, and engage in open and fee dialogue.

Returning, after two decades, to an academic environment and reflecting on a topic that has engaged me ever since, is something that may only happen once in a lifetime! There is much that I could say about manual drilling, and even more to learn about, but I close this blog with three short messages:

Manual drilling is fully established in some countries and less so in others. Globally, a suite of technologies, when used in the right locations and with professional construction methods, can provide drinking water of good quality. Manual drilling undoubtedly has a significant role to play in reaching the Sustainable Development Goal Targets for Drinking Water, especially in remote areas, but also in rapidly growing urban centres where piped supplies are failing to provide reliable services.
Manual drilling is not just about technology but also: the businesses that invest; the drillers (male and female) that need be able to work professionally; the data that can be collected; and the question of whether some people are left behind while others tap the water from their back yards. And there is the regulation (alongside other innovations) needed ensure that the sources are, and remain safe to drink, tapping sustainable groundwater resources.
I close by urging not only governments, but also development partners to consider manual drilling, and manual drillers in policies, legislation, investments and capacity strengthening efforts rather than leaving it on the margins. As we experienced in Madrid in April, engage in real dialogue and listening with the different actors involved. The rewards may even be beyond your expectations!

You can download all the presentations from the Madrid seminar from here.

RWSN has collated information on manual drilling technologies and associated wider issues here.

How a radio talk show is promoting WaSH in Northern Uganda

This is a guest blog by Justine Olweny, a Ugandan WASH entrepreneur and resource centre founder. You can find out more about his activities here.

“YOT KOM LONYO” (meaning “Health is wealth”) is a WaSH campaign radio program talk show conducted every Thursday from 16:00–17:00 hours East African Time. It encourages the involvement of local entrepreneurs, school leaders, pupils, politician, district technocrats, and partner representatives on water, sanitation and hygiene (WaSH) promotion discussions. It has promoted the utilisation and ownership of WaSH products among the communities of Kitgum District.

The weekly talk show was started in September, 2018 and has so far covered 7 WaSH topics within 22 episodes.This involves the engagement of eight stakeholders within the region being represented in at least two sessions. This talk show was motivated by the need for community ownership in safe WaSH infrastructures created by difference agencies, including the government.

Mightyfire 91.5FM has a total coverage of about 1,500,000 listeners in Northern Uganda. It has made significant progress in reaching out to the majority of refugees from South Sudan in the local language Acholi, which is spoken by them. The intention was to prepare for the rainy season, which often leads to an increase in the prevalence of waterborne diseases, including cholera, through the production of short radio spots to promote hand-washing with soap before eating and boiling drinking water to avoid illness.

This 6-month partnership between Mightyfire 91.5FM and Water Access Consulting is a pilot project to explore the possibilities of promoting hygiene and sanitation products and services led by the communities of Kitgum District. It was inspired by the webinar From Beneficiaries to Business: Promising findings from customer-centered approaches to sustainable water services.

Achievements:

Improved pit toilets (DuraSan and the SaTo pan supported by the “Sanitation as a business” programme of Water for people Uganda) are being constructed by landlords, while demand for improved pit toilets has increased together with the services provided by the pit-emptying gulpers team of the Municipality.
The radio programme materials were developed in accordance with the context, with compelling radio programmes that engage listeners in good hygiene practices, and with references to Lifewater mWaSH and UNHCR WaSH manuals.

Learnings:

The materials and topics discussed are generated by the audience themselves, for example during a school Q&A session, and during interviews
The audience pay a lot of attention to jingles, and they memorise short spot messages instead of the entire radio talk show
It is very motivating for both parents, elders and pupils to listen to their recorded debate play over the radio.

What do you think? How can we create more WaSH service demand using media? Do you have any examples of good WaSH campaigns in the media, that have contributed to behavior change in WaSH? Please share your experiences below.

(Photo credit: Water Access Consulting Archive)

Regulating the private sector

This is the fourth and final post in a series of four blogs entitled “Professional Borehole Drilling: Learning from Uganda” written by Elisabeth Liddle, and a RWSN webinar in 2019 about professional borehole drilling. It draws on research in Uganda by Liddle and Fenner (2018). We welcome your thoughts in reply to this blog below.

Great gains have been made in recent years regarding access to improved water sources in rural sub-Saharan Africa. Concerns have been raised, however, over the extent to which these sources are able to provide a reliable and safe water supply in the medium to long term (for example, Foster et al., 2018; Kebede et al., 2017; Owor et al., 2017; Adank et al., 2014).

There has been considerable focus on post-construction operations and maintenance, but increasing attention is on the quality of the implementation to prevent water point failure in the future (UNICEF/Skat, 2016, Bonsor et al., 2015; Anscombe, 2011; Sloots, 2010).

Skat Foundation and UNICEF have been key actors here, jointly advocating for an increase in drilling professionalism across sub-Saharan Africa. They recently released a guidance note on drilling professionalism (UNICEF/Skat, 2016), highlighting six key areas that need to be addressed to increase the quality of implementation work (see Figure 1).

In this blog I focus on the ‘institutional frameworks’ aspect in Figure 1, with specific attention on the ways in which Uganda has sought to improve regulation of the private sector in recent years by introducing licensing systems for both drilling contractors and consultants.

For the past two decades, Uganda has strongly encouraged the involvement of the private sector in the siting and drilling of rural water points (Danert et al., 2003). Having encouraged privatisation, however, the Ministry of Water and the Environment (MWE) recognised that they had a crucial role to play within this: regulation of the private sector. Regulation efforts began in 1999 with the introduction of drilling contractor licenses. To gain a license, drilling contractors must submit documentation outlining their equipment, their staff and CVs, and their work history. Premises and equipment are then assessed, with the drilling contractor’s technical and financial capacity being at the forefront throughout. Drilling contractor licenses must be renewed annually. Updated lists of licensed drilling contractors are published in national newspapers and online every July.

Recent research in Uganda (Liddle and Fenner, 2018) found that drilling contractor licenses have greatly helped the procurement process within Uganda’s implementing agencies, with the drilling contractor license list typically being the first port of call during bid evaluation.

In recent years, MWE recognised the essential need to extend this licensing system to consultants/hydrogeologists, given the proliferation of ‘briefcase consultants’ in the country (those with no formal geology or hydrogeology training). The issue of briefcase consultants is discussed in blog 1 of this series. Briefcase consultants were bidding for the siting and supervision work, yet evaluation teams within implementing agencies had no way of identifying those that were truly qualified for this work, and those whose bidding documents (e.g. work experience, degrees etc) were fake. Poor quality work then proceeded as briefcase consultants began winning contracts.

To address this problem and provide guidance for evaluation teams, the MWE started the process of issuing hydrogeologist/consultant licenses in 2016 (Tindimugaya, 2016). Consultants can apply for an individual hydrogeologist license or a groundwater firm license. For an individual to gain a license, they must submit their academic documents, CV, and an overview of past work. The individual must have hydrogeology specific qualifications (short course, diploma, or degree); geology qualifications alone are insufficient. Premises and equipment are then assessed and a practical assessment and interview are conducted. For a firm to gain a license, the director must gain an individual license. The firm then needs to submit their company registration details, a list of staff and CVs, and details of past work. By July 2018, licenses had been issued to 65 individuals and 15 firms. As with drilling contractor licenses, consultant licenses are renewed annually and updated lists of licensed consultants are published in national newspapers and online every July.

While these licensing systems have greatly helped Ugandan implementing agencies, similar licensing systems across SSA, especially for consultants, appear to be rare. According to Danert and Theis (2018), of the 14 sub-Saharan Africa countries listed in their report, only three had licensing systems in place for consultants, while ten had licensing systems in place for Drilling Contractors. It is now essential that additional sub-Saharan African governments follow Uganda’s lead, and begin the regulate the private sector, especially consultants given the essential role that siting and supervision are known to play when considering the quality of the implementation work (UNICEF/Skat, 2016; Anscombe, 2011; Danert et al., 2010).

What do you think?

So what do you think? Do you have experiences of trying to select qualified and experiences groundwater professionals? Do you think that licensing professionals is the way forward within your context? Are there any efforts to better regulate the private drilling sector in your country? You can respond below by posting in the reply below, or you can join the live webinar on the 14th of May (register here).

References

Adank, M., Kumasi, T.C., Chimbar, T.L., Atengdem, J., Agbemor, B.D., Dickinson, N., and Abbey, E. (2014). The state of handpump water services in Ghana: Findings from three districts, 37^th WEDC International Conference, Hanoi, Vietnam, 2014.

Anscombe, J.R. (2011). Quality assurance of UNICEF drilling programmes for boreholes in Malawi. Lilongwe, Malawi: Ministry of Agriculture Irrigation and Water Development, Government of Malawi.

Bonsor, H.C., Oates, N., Chilton, P.J., Carter, R.C., Casey, V., MacDonald, A.M., Etti, B., Nekesa, J., Musinguzi, F., Okubal, P., Alupo, G., Calow, R., Wilson, P., Tumuntungire, M., and Bennie, M. (2015). A Hidden Crisis: Strengthening the evidence base on the current failure of rural groundwater supplies, 38^th WEDC International Conference, Loughborough University, UK, 2014.

Danert, K., Armstrong, T., Adekile, D., Duffau, B., Ouedraogo, I., and Kwei, C. (2010). Code of practice for cost effective boreholes. St Gallen, Switzerland: RWSN.

Danert, K. and Theis, S. (2018). Professional management of water well drilling projects and programmes, online course 2018, report for course participants, UNICEF-Skat Foundation Collaboration 2017-2019. St Gallen, Switzerland: Skat.

Danert, K., Carter, R.C., Rwamwanja, R., Ssebalu, J., Carr, G., and Kane, D. (2003). The private sector and water and sanitation services in Uganda: Understanding the context and developing support strategies. Journal of International Development, 15, 1099-1114.

Foster, T., Willetts, J., Lane, M. Thomson, P. Katuva, J., and Hope, R. (2018). Risk factors associated with rural water supply failure: A 30-year retrospective study of handpumps on the south coast of Kenya. Science of the Total Environment,, 626, 156-164.

Kebede, S., MacDonald, A.M., Bonsor, H.C, Dessie, N., Yehualaeshet, T., Wolde, G., Wilson, P., Whaley, L., and Lark, R.M. (2017). UPGro Hidden Crisis Research Consortium: unravelling past failures for future success in Rural Water Supply. Survey 1 Results, Country Report Ethiopia. Nottingham, UK: BGS (OR/17/024).

Liddle, E.S. and Fenner, R.A. (2018). Review of handpump-borehole implementation in Uganda. Nottingham, UK: BGS (OR/18/002).

Owor, M., MacDonald, A.M., Bonsor, H.C., Okullo, J., Katusiime, F., Alupo, G., Berochan, G., Tumusiime, C., Lapworth, D., Whaley, L., and Lark, R.M. (2017). UPGro Hidden Crisis Research Consortium. Survey 1 Country Report, Uganda. Nottingham, UK: BGS (OR/17/029).

Sloots, R. (2010). Assessment of groundwater investigations and borehole drilling capacity in Uganda. Kampala, Uganda: Ministry of Water and Environment, Government of Uganda, and UNICEF.

Tindimugaya, C. (2016). Registration of groundwater consultants in Uganda: rationale and status. RWSN Forum, 2016, Abidjan, Côte d’Ivoire.

UNICEF/Skat (2016). Professional water well drilling: A UNICEF guidance note. St Gallen, Switzerland: Skat and UNICEF.

La réglementation du secteur privé

Il s’agit du dernier d’une série de quatre blogs intitulée “Le forage professionnel de puits d’eau: Apprendre de l’Ouganda” de Elisabeth Liddle et d’un webinaire en 2019 sur le forage de puits professionnel. Cette série s’appuie sur les recherches menées en Ouganda par Liddle et Fenner (2018). Nous vous invitons à nous faire part de vos commentaires en réponse à ce blog ci-dessous.

Si l’accès à des sources d’eau améliorées a été amélioré de manière progressive dans l’ensemble de l’Afrique subsaharienne rurale, plusieurs études ont soulevé des problèmes concernant la capacité de ces sources à fournir des quantités d’eau sûres et adéquates à long terme (Foster et al., 2018 ; Kebede et al., 2017 ; Owor et al., 2017 ; Adank et al., 2014).

Le secteur se focalise sur l’exploitation et l’entretien après la construction, mais également de plus en plus sur la qualité de la mise en œuvre afin de prévenir la défaillance des points d’eau dans l’avenir. (UNICEF/Skat, 2016, Bonsor et al., 2015; Anscombe, 2011; Sloots, 2010).

La Fondation Skat et l’UNICEF sont des acteurs clés dans ce domaine, plaidant conjointement en faveur d’une professionnalisation accrue du forage en Afrique subsaharienne. Ils ont récemment publié une note d’orientation sur le professionnalisation en matière de forage (UNICEF/Skat, 2016), soulignant six domaines clés qui doivent être abordés pour améliorer la qualité du travail d’exécution (voir Figure 1).

Dans ce blog, je me concentre sur l’aspect “cadres institutionnels ” de la Figure 1, avec une attention particulière sur la manière dont l’Ouganda a cherché à améliorer la réglementation du secteur privé ces dernières années en introduisant des systèmes de permis pour les entrepreneurs et les consultants en forage.

Fig. 1: Six domaines d’engagement pour l’exploitation professionnelle des eaux souterraines (Skat/ UNICEF, 2018)

Des recherches récentes en Ouganda (Liddle et Fenner, 2018) ont montré que les permis d’entrepreneur de forage ont grandement facilité le processus de passation de marché au sein des organismes d’exécution de travaux en Ouganda, la liste des permis d’entrepreneur de forage étant généralement le premier point de contact pendant l’évaluation des offres.

Ces dernières années, le Ministère de l’Eau et de l’Environnement a reconnu le besoin essentiel d’étendre ce système de permis aux consultants/hydrogéologues, étant donné la prolifération des “consultants à mallette” dans le pays (ceux qui n’ont aucune formation formelle en géologie ou en hydrogéologie). La question des consultants en mallettes est abordée dans le premier blog de cette série. Les consultants en mallettes soumissionnaient pour les travaux d’implantation et de supervision, mais les équipes d’évaluation au sein des organismes d’exécution n’avaient aucun moyen d’identifier ceux qui étaient réellement qualifiés pour ces travaux et ceux dont les documents d’appel d’offres (par exemple, expérience professionnelle, diplômes, etc.) étaient des faux. Le travail de qualité médiocre s’est ensuite poursuivi car les “consultants à mallette” remportaient de plus en plus de contrats.

Pour résoudre ce problème et fournir des conseils aux équipes d’évaluation, le Ministère de l’Eau et de l’Environnement a entamé le processus de délivrance de permis d’hydrogéologue/consultant en 2016 (Tindimugaya, 2016). Les consultants peuvent demander un permis individuel d’hydrogéologue ou un permis d’entreprise en lien avec les eaux souterraines. Pour qu’une personne obtienne un permis, elle doit soumettre ses documents universitaires, son CV et un aperçu de son expérience professionnelle. La personne doit posséder des qualifications spécifiques en hydrogéologie (cours de courte durée, diplôme ou licence) ; des études en géologie seulement sont insuffisantes. Les locaux et l’équipement sont ensuite évalués, et une évaluation pratique ainsi qu’un entretien sont menées. Pour qu’une entreprise obtienne un permis, le directeur doit avoir un permis individuel. L’entreprise doit ensuite fournir les détails relatifs à l’inscription de son entreprise, une liste de son personnel et de leurs CV, ainsi que les détails de ses travaux antérieurs. A compter de juillet 2018, 65 personnes et 15 entreprises avaient reçu des permis. Comme pour les permis d’entrepreneur de forage, les permis des consultants sont renouvelés chaque année et des listes de consultants autorisés mises à jour sont publiées dans les journaux nationaux et en ligne chaque année en juillet.

Si ces systèmes d’octroi de permis ont grandement aidé les organismes d’exécution ougandais, des systèmes d’octroi de permis similaires, en particulier pour les consultants, semblent être rares dans le reste de l’Afrique subsaharienne. Selon Danert et Theis (2018), sur les 14 pays d’Afrique subsaharienne énumérés dans le rapport, seulement trois avaient mis en place des systèmes de permis pour les consultants, tandis que dix avaient mis en place des systèmes de permis pour les entreprises de forage. Il est maintenant essentiel que d’autres gouvernements d’Afrique subsaharienne suivent l’exemple de l’Ouganda et commencent à réglementer le secteur privé, en particulier les consultants, étant donné le rôle essentiel qu’ils jouent dans la qualité du travail d’exécution, l’implantation et la supervision des forages (UNICEF/Skat, 2016 ; Anscombe, 2011 ; Danert et al., 2010).

Qu’en pensez-vous?

Alors, qu’en pensez-vous? Avez-vous de l’expérience dans la sélection de professionnels qualifiés et expérimentés dans le domaine de l’eau souterraine ? Pensez-vous que l’octroi de permis aux professionnels est la voie à suivre dans votre contexte ? Y a-t-il des efforts pour mieux réglementer le secteur privé du forage dans votre pays ? Vous pouvez répondre ci-dessous en postant un commentaire, ou vous pouvez participer au webinaire en direct le 14 mai (inscriptions ici)

Références

Anscombe, J.R. (2011). Quality assurance of UNICEF drilling programmes for boreholes in Malawi. Lilongwe, Malawi: Ministry of Agriculture Irrigation and Water Development, Government of Malawi.

Danert, K., Armstrong, T., Adekile, D., Duffau, B., Ouedraogo, I., and Kwei, C. (2010). Code of practice for cost effective boreholes. St Gallen, Switzerland: RWSN.

Liddle, E.S. and Fenner, R.A. (2018). Review of handpump-borehole implementation in Uganda. Nottingham, UK: BGS (OR/18/002).

Sloots, R. (2010). Assessment of groundwater investigations and borehole drilling capacity in Uganda. Kampala, Uganda: Ministry of Water and Environment, Government of Uganda, and UNICEF.

Tindimugaya, C. (2016). Registration of groundwater consultants in Uganda: rationale and status. RWSN Forum, 2016, Abidjan, Côte d’Ivoire.

UNICEF/Skat (2016). Professional water well drilling: A UNICEF guidance note. St Gallen, Switzerland: Skat and UNICEF.

Remerciements

Ce travail fait partie du projet Hidden Crisis du programme de recherche UPGro – cofinancé par le NERC, le DFID et l’ESRC.

Le travail de terrain entrepris pour ce rapport fait partie de la recherche doctorale des auteurs à l’Université de Cambridge, sous la supervision du Professeur Richard Fenner. Ce travail sur le terrain a été financé par le Ryoichi Sasakawa Young Leaders Fellowship Fund et UPGro : Hidden Crisis.

Merci à ceux d’entre vous de l’Université de Makerere et de WaterAid Ouganda qui m’ont apporté un soutien logistique, y compris sur le terrain, pendant que je menais les entretiens pour ce rapport (en particulier le Dr Michael Owor, Felece Katusiime et Joseph Okullo de l’Université Makerere et Gloria Berochan de WaterAid Uganda). Merci également à tous les répondants d’avoir été enthousiastes et disposés à participer à cette recherche.

Photo: E.S. Liddle

Attracting the best: Why some experienced consultants and drilling contractors are no longer willing to work for district local government

This is the third in a series of four blogs entitled Professional Borehole Drilling: Learning from Uganda written by Elisabeth Liddle, and a RWSN webinar in 2019 about professional borehole drilling. It draws on research in Uganda by Liddle and Fenner (2018). We welcome your thoughts in reply to this blog below.

Several recent reports have raised concerns over the quality of the boreholes that are being sited and constructed in rural sub-Saharan Africa (UNICEF/Skat, 2016, Bonsor et al., 2015; Anscombe, 2011; Sloots, 2010). If high-quality boreholes are to be sited and constructed, skilled experienced personnel are needed to conduct this work. Recent research in Uganda, highlights that a number of the most experienced consultants and drilling contractors in Uganda (those who have been in business for fifteen – twenty years) are no longer willing to bid for district local government contracts (Liddle and Fenner, 2018). This is concerning, given that district local government projects accounted for 68% of new deep boreholes drilled in the financial year 2016/17 (MWE, 2017).

In this blog I outline why these consultants and drilling contractors are no longer willing to work for districts.

1. Low prices

A number of the consultants and drilling contractors interviewed are simply dissatisfied with the prices that district local governments are willing to pay compared to that of non-governmental organisations (NGOs). The consultants interviewed, for example, stated that districts are typically willing to pay UGX 1 million – UGX 2 million (US $276 – $552[1]) for siting and supervision, while NGOs are typically willing to pay UGX 2.5 million – UGX 3.5 million (US $691 – $967) for the same work. The price districts are willing to pay is reportedly not realistic, and as a result, these consultants would have to take shortcuts in their work. The same issues were reported among the drillers who are no longer willing to work for the district local governments. These consultants and drillers are not willing to undertake sub-standard water points for communities, take shortcuts in their work, nor tarnish the reputation of their companies.

2. Misuse of ‘lump sum, no-water-no-pay’ payment terms

As explained in blog “Turnkey contracts for borehole siting and drilling”, drilling under a turnkey contract was found to be common during this research: 26 of the implementing agencies interviewed in Uganda (n = 29), for example, were procuring the private sector for the implementation work, 19 of whom were using turnkey contracts for the siting and drilling work and paying the driller via lump sum, no-water-no-pay payment terms. Typically, under these combined ‘lump sum, no-water-no-pay’ payment terms, if a borehole is unsuccessful (is dry or low-yielding), the driller is not paid. If the borehole is successful, the driller should be paid the full lump sum price, regardless of the costs incurred on-site. A number of districts, however, are deviating from lump sum, no-water-no-pay payment term norms. Instead of paying the full lump sum as they should do, they are only paying for the actual work done and materials used (known as BoQ payment or admeasurement payment in Uganda). While this may be specified in the driller’s contract, it is concerning given that the whole premise behind lump sum no-water-no-pay payment terms is that, while drillers will lose money on unsuccessful boreholes, they will be able to recover these costs from the full lump sums they are paid for the successful boreholes. Without full lump sum payment, drillers are unable to their losses..

3. Bribes during the bidding process

Demands for bribes are reportedly common when bidding for district local government contracts. When a bribe is demanded, consultants and drillers struggle to account for this cost: if they account for this in their quote, their quote will be too high, thus, they will not win the contract. If, however, they do not account for the price of the bribe in their quote, the consultant or driller will then need to recover this cost at some stage, usually through taking shortcuts on-site. If consultants and drillers do not want to take shortcuts in their work they will not bid.

4. Late payment

Receiving the full payment from districts for completed works can be challenging, with several drilling contractors reporting that in some cases, they had to wait over a year to receive their full payment. This makes business difficult; it is much easier to only work for NGOs who are known for paying on time.

The following quotes help to exemplify the above issues:

“But I tell you, for the last few years I have not bided for a district job because the bidding process is just so silly. You know, they will already know who is going to win the contract before they even advertise…And the terms and conditions in the contract are very unfavourable to the driller… So I have not drilled for the district for the last five years as there is no guarantee that they will pay us, this is not a viable business model for us…They only pay on time 50% of the time. Even when the borehole is successful, they will say, oh we don’t have any money, we’ll have to pay in next quarter. Sometimes this has gone on for a whole year. It was with a district that it took 14 months for me to be paid once… The guarantee of receiving payment is frustrating” (Drilling Contractor).

“I strongly believe bidding is just a procedure for most projects. In most cases the districts are giving contracts after they [the bidder] has paid them for the contract. So, say it is a contract for 100 million, they will want 20 million during bidding. This problem is with district, not NGOs, not the ministry… So I have stopped drilling for districts, it was too expensive” (Drilling Contractor).

“I don’t like working for the district. To be honest they are simply corrupt. It is very hard to get a contract from them, you’ve often got to bribe to simply get the contract. They’ll always ask for extra money. It is disturbing. If you don’t agree to pay them, they will find a way of explaining why you did not get the contract” (Consultant).

Districts are now beginning to notice this issue as well, as explained by one district water officer below:

“So many of them [drillers] are so business orientated that even during the time of bidding they under quote so they can win the contract…now because of that they have made serious drillers pull out of district work as they cannot win government contracts. Most of the serious drillers are now dealing with NGOs because they know the procurement process is much more transparent and they will be able to get the money that they need to do a good job. But for local government, they cannot. So we have lost some really good drillers because of this, because they cannot compete and most times most local government want to select the lowest bidder… So we have a big challenge here because we don’t want government to lose money by selecting the more expensive driller but this means the really high quality ones have left district work” (District Water Office).

These quotes highlight the long-term consequences for district local governments who are known for engaging in practices such as paying low prices, offering unfavourable payment terms, soliciting bribes, and making late payments. Finding solutions to these problems is essential to ensure that experienced consultants and drilling contractors are willing to support district work going forward.

What do you think?

So what do you think? Do you have experiences of unrealistically low prices (or the opposite), unfavourable payment terms, bribery in the procurement process or late payments. Or can you share any particularly promising practices with us? You can respond below by posting in the reply below, or you can join the live webinar on the 14th of May (register here).

References

Anscombe, J.R. (2011). Quality assurance of UNICEF drilling programmes for boreholes in Malawi. Lilongwe, Malawi: Ministry of Agriculture Irrigation and Water Development, Government of Malawi, Available from http://www.rural-water-supply.net/en/resources/details/509

Liddle, E.S. and Fenner, R.A. (2018). Review of handpump-borehole implementation in Uganda. Nottingham, UK: BGS (OR/18/002). https://nora.nerc.ac.uk/id/eprint/520591/

MWE (2017) Sector Performance Report 2017, Ministry of Water and Environment, Government of Uganda, Available from https://www.mwe.go.ug/sites/default/files/library/SPR%202017%20Final.pdf

Sloots, R. (2010). Assessment of groundwater investigations and borehole drilling capacity in Uganda. Kampala, Uganda: Ministry of Water and Environment, Government of Uganda, and UNICEF, Available from http://www.rural-water-supply.net/en/resources/details/133

UNICEF/Skat (2016). Professional water well drilling: A UNICEF guidance note. St Gallen, Switzerland: Skat and UNICEF, Available from http://www.rural-water-supply.net/en/resources/details/775

[1] May 2017 exchange rate.

Photos

photo #1: “Bidding process poster on display in a District Procurement Office” (Source: Elisabeth Liddle).

Acknowledgements

This work is part of the Hidden Crisis project within the UPGro research programme – co-funded by NERC, DFID, and ESRC.

The fieldwork undertaken for this report is part of the authors PhD research at the University of Cambridge, under the supervision of Professor Richard Fenner. This fieldwork was funded by the Ryoichi Sasakawa Young Leaders Fellowship Fund and UPGro: Hidden Crisis.

Thank you to those of you from Makerere University and WaterAid Uganda who provided logistical and field support while I was conducting the interviews for this report (especially Dr Michael Owor, Felece Katusiime, and Joseph Okullo from Makerere University and Gloria Berochan from WaterAid Uganda). Thank you also to all of the respondents for being eager and willing to participate in this research.

Comment attirer les meilleurs, ou pourquoi certains consultants et entrepreneurs de forage expérimentés ne sont plus disposés à travailler pour le gouvernement local du district

Il s’agit du troisième d’une série de quatre blogs intitulée ‘Le forage professionnel de puits d’eau: Apprendre de l’Ouganda” de Elisabeth Liddle et d’un webinaire en 2019 sur le forage de puits professionnel. Cette série s’appuie sur les recherches menées en Ouganda par Liddle et Fenner (2018). Nous vous invitons à nous faire part de vos commentaires en réponse à ce blog ci-dessous.

Plusieurs rapports récents ont remis en question la qualité des forages en cours de construction en Afrique subsaharienne rurale (UNICEF/Skat, 2016, Bonsor et al., 2015; Anscombe, 2011; Sloots, 2010). Pour implanter et construire des forages de haute qualité être, un personnel qualifié et expérimenté doit être en mesure d’effectuer ces travaux. Des recherches récentes en Ouganda montrent qu’un certain nombre de consultants et d’entrepreneurs en forage parmi les plus expérimentés en Ouganda (ceux qui sont en activité depuis quinze à vingt ans) ne sont plus disposés à être engagés pour des contrats de collectivités locales de district (Liddle and Fenner, 2018). Ceci est préoccupant, étant donné que les projets des collectivités locales de district représentent 68% des nouveaux forages profonds forés au cours de l’année fiscale 2016/17 (MWE, 2017).

Dans ce blog, j’explique pourquoi ces consultants et entrepreneurs en forage ne sont plus disposés à travailler pour les districts.

1. Les prix sont trop bas

Un certain nombre de consultants et d’entrepreneurs de forage interrogés ne sont tout simplement pas satisfaits des prix que les collectivités locales de district sont prêtes à payer par rapport aux organisations non gouvernementales (ONG). Les consultants interrogés, par exemple, ont déclaré que les districts sont généralement disposés à payer de 1 à 2 million d’UGX (276 $US – 552 $US [1]) pour l’implantation et la supervision, tandis que les ONG sont généralement disposées à payer de 2,5 à 3,5 millions d’UGX (691 $US – 967 $US) pour le même travail. Le prix que les districts sont prêts à payer n’est apparemment pas réaliste et, en conséquent, ces consultants ne seraient pas en mesure de réaliser un travail de qualité. Les mêmes problèmes ont été signalés chez les foreurs qui ne sont plus disposés à travailler pour les autorités locales du district. Ces consultants et foreurs ne sont pas prêts à réaliser des points d’eau inférieurs aux normes pour les communautés du fait de ces bas prix, à prendre des raccourcis dans leur travail, ou à ternir la réputation de leurs entreprises.

2. Usage abusif des modalités de paiement forfaitaire “pas d’eau, pas de paiement”

Comme l’explique le blog “Contrats clés en main pour l’implantation et le forage de puits d’eau“, l’utilisation de contrats clés en main est fréquente en Ouganda: sur les 29 organisations interviewées au cours de cette recherche, 26 organisations travaillaient avec le secteur privé dans le cadre de contrat de forages, et 19 rémunéraient les foreurs pour l’implantation et le forage à travers des paiements forfaitaires “pas d’eau, pas de paiement”. Il est typique selon ces modalités de paiement que le foreur ne soit pas payé, si un forage échoue (si il est à sec ou à faible rendement). Si le forage est réussi, le foreur doit recevoir le prix forfaitaire total, quels que soient les coûts engagés sur place. Un certain nombre de districts, cependant, s’écartent des normes de paiement forfaitaire “pas d’eau, pas de paiement”. Au lieu de payer la totalité de la somme forfaitaire comme ils devraient le faire, ils ne paient que pour le travail réellement effectué et les matériaux utilisés (connu sous le nom de paiement au devis (BoQ) ou paiement ‘admeasurement’ en Ouganda). Bien que cela puisse être spécifié dans le contrat de forage, cela reste inquiétant, étant donné la prémisse sur laquelle les modalités de paiement forfaitaire “pas d’eau, pas de paiement” est basée: même si les foreurs perdent de l’argent sur les forages infructueux, ils devraient être en mesure de récupérer ces coûts à travers les sommes forfaitaires qui leur sont versées pour les forages réussis. Sans un paiement forfaitaire intégral, les foreurs sont incapables de recouvrir leurs pertes.

3. Les pots-de-vin pendant le processus d’appel d’offres

Les demandes de pots-de-vin seraient fréquentes lors des appels d’offres pour des contrats de collectivités locales de district. Lorsqu’un pot-de-vin est exigé, les consultants et les foreurs ont du mal à rendre compte de ce coût : s’ils en tiennent compte dans leur devis, leur devis sera trop élevé et ils ne gagneront donc pas le contrat. Si, toutefois, ils ne tiennent pas compte du prix du pot-de-vin dans leur devis, le consultant ou le foreur devra alors récupérer ce coût à un moment donné, généralement en effectuant un travail de mauvaise qualité sur place. Si les consultants et les foreurs ne veulent pas travailler dans ces conditions, ils ne soumissionneront pas.

4. Les retards de paiement

Recevoir un paiement intégral de la part des districts pour les travaux achevés peut être difficile: plusieurs entrepreneurs de forage signalent que dans certains cas, ils ont dû attendre plus d’un an pour recevoir leur paiement intégral. Cela rend les affaires difficiles. Il est beaucoup plus facile de ne travailler que pour des ONG qui ont la réputation de payer à temps.

Les citations suivantes aident à illustrer les problèmes ci-dessus:

«Mais je vous le dis, ces dernières années, je n’ai pas soumissionné pour un contrat avec le district, car le processus de candidature est tellement ridicule. Vous savez, ils savent déjà qui va remporter le contrat avant même de l’annoncer … Et les termes et conditions du contrat sont très défavorables au foreur … Je n’ai donc pas foré pour le district depuis cinq ans, rien ne garantit qu’ils nous paieront, ce n’est pas un modèle commercial viable pour nous… Ils paient seulement à temps dans 50% des cas. Même si le forage a réussi, ils diront: Nous n’avons pas d’argent, nous devrons payer le prochain trimestre. Parfois, cela dure depuis un an. Avec un district, il a fallu 14 mois pour que je sois payé une fois… La garantie de recevoir un paiement est frustrante» (Entrepreneur de forage).

«Je crois fermement que la passation de marché est seulement une procédure pour la plupart des projets. Dans la plupart des cas, les districts signent des contrats après que le soumissionnaire leur ait donné de l’argent pour celui-ci. Alors, disons que c’est un contrat de 100 millions, ils voudront 20 millions lors du processus d’appel d’offres. Ce problème concerne les districts, pas les ONG, ni le ministère … J’ai donc arrêté de forer pour les districts, c’était trop cher» (Entrepreneur de forage)

«Je n’aime pas travailler pour le district. Pour être honnête, ils sont tout simplement corrompus. Il est très difficile d’obtenir un contrat de leur part, vous devez souvent payer pour obtenir le contrat. Ils demanderont toujours de l’argent en plus. C’est dérangeant. Si vous n’acceptez pas de les payer, ils trouveront un moyen d’expliquer pourquoi vous n’avez pas obtenu le contrat » (Consultant)

Les districts commencent maintenant à remarquer ce problème également, comme l’explique l’un des responsables de l’eau du district ci-dessous:

«Un si grand nombre d’entre eux [les foreurs] ont une mentalité tellement axée sur le “business” que pendant la période de la passation de marché, ils montent une offre qui défie toute concurrence avec des prix trop bas afin de pouvoir remporter le contrat. La plupart des foreurs sérieux travaillent maintenant seulement avec les ONG car ils savent que le processus de passation de marché est beaucoup plus transparent et qu’ils pourront obtenir l’argent dont ils ont besoin pour faire du bon travail. Mais avec le gouvernement local, ils ne peuvent pas. Nous avons donc perdu de très bons foreurs à cause de cela, parce qu’ils ne peuvent pas défier cette concurrence, et que la plupart des gouvernements locaux veulent choisir le soumissionnaire aux prix les plus bas… Nous avons donc un gros défi à relever car nous ne voulons pas que le gouvernement perde de l’argent en sélectionnant les foreurs les plus chers mais cela signifie que les foreurs qui font du travail de très haute qualité ne travaillent plus avec le district » (Responsable de l’eau pour le district)

Ces citations mettent en évidence les conséquences à long terme pour les administrations locales de district connues pour des pratiques telles que payer des prix trop bas, proposer des conditions de paiement défavorables, solliciter des pots-de-vin et effectuer des paiements en retard. Il est essentiel de trouver des solutions à ces problèmes pour que des consultants expérimentés et des entrepreneurs en forage soient prêts à soutenir les travaux des districts.

Qu’en pensez-vous?

Alors, qu’en pensez-vous? Avez-vous des expériences de prix bas irréalistes (ou l’inverse), de conditions de paiement défavorables, de corruption dans le processus de passation de marché ou de retards de paiement? Ou pouvez-vous partager des pratiques particulièrement prometteuses avec nous? Vous pouvez répondre ci-dessous en postant un commentaire, ou vous pouvez participer au webinaire en direct le 14 mai (inscriptions ici)

Références

Liddle, E.S. and Fenner, R.A. (2018). Review of handpump-borehole implementation in Uganda. Nottingham, UK: BGS (OR/18/002). https://nora.nerc.ac.uk/id/eprint/520591/

MWE (2017) Sector Performance Report 2017, Ministry of Water and Environment, Government of Uganda, Available from https://www.mwe.go.ug/sites/default/files/library/SPR%202017%20Final.pdf

UNICEF/Skat (2016). Professional water well drilling: A UNICEF guidance note. St Gallen, Switzerland: Skat and UNICEF, Available from http://www.rural-water-supply.net/en/resources/details/775

[1] taux de change de Mai 2017

Remerciements

Ce travail fait partie du projet Hidden Crisis du programme de recherche UPGro – cofinancé par le NERC, le DFID et l’ESRC.

Photos

photo: ” Affiche d’évaluation des offres et d’attribution du contrat exposée dans un bureau de passation de marché de district ” (Source: Elisabeth Liddle)

Understanding the invisible: Uganda’s efforts to increase access to detailed groundwater data

This is the second in a series of four blogs entitled Professional Borehole Drilling: Learning from Uganda written by Elisabeth Liddle, and a RWSN webinar in 2019 about professional borehole drilling. It draws on research in Uganda by Liddle and Fenner (2018). We welcome your thoughts in reply to this blog below. [Note: The original blog was revised on 03 April 2019 to correct an inaccurate representation of the situation].

While access to improved water sources has steadily increased across rural sub-Saharan Africa, several studies have raised concerns over the extent to which these sources are able to provide safe and adequate quantities of water over the long term (Foster et al., 2018; Kebede et al., 2017; Owor et al., 2017; Adank et al., 2014). Borehole design and siting are essential to ensure that the subsequent water point will continue to provide safe and adequate quantities of water. Access to detailed and accurate groundwater information can greatly aid siting and borehole design (UNICEF/Skat, 2016; Carter et al., 2014).

Skat Foundation and UNICEF have been key advocates for increasing access to detailed groundwater data including the recent guidance note which pointed out that ‘groundwater information’ is essential when seeking to improve the quality of borehole implementation in low- and middle-income countries (see Figure 1; UNICEF/Skat, 2016). In this blog I provide some insights into the ways in which Uganda has sought to increase access to groundwater data is recent years.

Fig. 1: Six areas of engagement for increasing drilling professionalism (Skat/UNICEF, 2016).

Groundwater resource mapping in Uganda

Significant steps have been taken in recent years to increase access to detailed groundwater data in Uganda. Much of this began in 2000 when the Directorate of Water Resources and Management (DWRM) within the Ministry of Water and the Environment (MWE) began a nationwide groundwater mapping project. Using data sourced from the borehole completion reports that drilling contractors are required to submit every quarter, DWRM has developed are series of maps for each district. These include:

Water source location map, underlain by a geology map.
Recommended water source technology map (technology recommendation is based on main water strike depth and yield information).
Hydrogeological condition map – includes 4 sub-maps:
- inferred first water strike depth[1],
- inferred main water strike depth[2],
- inferred thickness of overburden[3], and
- inferred static water level depth[4].
Groundwater quality map: highlights areas where water quality is expected to be problematic.
Groundwater potential – Drilling success rate map: combines expected yield success rate[5] coupled with expected water quality conditions.

Tindimugaya (2004) explains these maps in greater detail, along with the ways in which such maps can help the implementation process. An example of these maps for Kibaale district is available on the MWE’s website.

This mapping work is ongoing, however, by May 2017 DWRM had mapped 85% of Uganda’s districts. The magnitude of these maps and the level of detail they capture is remarkable. These maps have become a great asset for district local governments, non-governmental organisations, and others responsible for water point siting and construction.

Ongoing challenges

While Uganda has made remarkable progress in recent years with their groundwater mapping efforts, there have been several challenges along the way (Liddle and Fenner, 2018), mostly related to data accuracy. When interviewing those in Uganda for this research, there were reports that in some (but not all) cases, inaccurate data is submitted. When looking at why inaccurate data is sometimes submitted, two key issues were noted:

There often isn’t a qualified consultant on site full-time for drilling supervision. While it is the drilling contractor’s responsibility to have a member of staff recording the drilling log, an independent supervisor should also keep a log and check the driller’s log for accuracy before this is submitted to DWRM. Without full-time supervision, however, this cannot happen. Furthermore, even with full-time supervision, if the supervisor is not a hydrogeologist, it is unlikely that they will be keeping accurate and detailed logs.
The lump sum no-water-no-pay payment terms via which Ugandan drillers are often paid (see blog “Turnkey contracts for borehole siting and drilling”). When these contract terms are used, to be paid, drillers need to prove that they have drilled a successful borehole; as a result, there were reports of drillers exaggerating a given borehole’s yield in order to be paid. Skewing data in this way is concerning, as not only will these boreholes struggle to provide adequate quantities of water post-construction, but this high-yield data is then entered into the drilling log database and used to produce the hydrogeological maps. Increasing the quality of drilling supervision and ensuring data is not skewed in this way is essential if the accuracy of DWRM’s maps is to increase going forward.

Overall, Uganda has made remarkable progress over the past two decades in increasing the level of groundwater information available in-country. There are very few examples in the African continent comparable to what Uganda has achieved! As noted above, the resultant maps have become a great asset for district local governments, non-governmental organisations, and others responsible for water point siting and construction.

Increasing the accuracy of borehole completion reports is an essential next steps for Uganda. Furthermore, other countries should be aware of these challenges as they embark on their own mapping exercises and ensure necessary measures are in place to prevent these problems in their own contexts.

What do you think?

So what do you think? Do you have experiences of collecting and collating groundwater data, or using groundwater maps? Is this something that should be started in your country? You can respond below by posting in the reply below, or you can join the live webinar on the 14th of May (register here).

[1]‘Expected first water strike depth’ = the depth at which a driller is likely to first encounter groundwater. In most cases the driller will need to continue drilling past this point if the borehole is to be able to provide sufficient quantities of water for users.

[2] ‘Expected main water strike depth’ = the depth at which a driller is likely to find the main aquifer that will be able to provide sufficient quantities of water for users.

[3] Overburden refers to the unconsolidated material that overlays the bedrock. The ‘expected overburden thickness’ map highlights the expected depth of this unconsolidated material across Uganda.

[4] ‘Expected static water level’ = the expected groundwater depth without any pumping disturbance.

[5] ‘Yield success’ refers to a borehole being able to sustain a pumping rate of 500 litres/hour. If a borehole can sustain this pumping rate, it is considered successful in regards to yield.

References

Adank, M., Kumasi, T.C., Chimbar, T.L., Atengdem, J., Agbemor, B.D., Dickinson, N., and Abbey, E. (2014). The state of handpump water services in Ghana: Findings from three districts, 37^th WEDC International Conference, Hanoi, Vietnam, 2014, Available from https://wedc-knowledge.lboro.ac.uk/resources/conference/37/Adank-1976.pdf

Carter, R., Chilton, J., Danert, K. & Olschewski, A. (2014) Siting of Drilled Water Wells – A Guide for Project Managers. RWSN Publication 2014-11 , RWSN , St Gallen, Switzerland, Available from http://www.rural-water-supply.net/en/resources/details/187

Foster, T., Willetts, J., Lane, M. Thomson, P. Katuva, J., and Hope, R. (2018). Risk factors associated with rural water supply failure: A 30-year retrospective study of handpumps on the south coast of Kenya. Science of the Total Environment,, 626, 156-164, Available from https://www.sciencedirect.com/science/article/pii/S0048969717337324

Liddle, E.S. and Fenner, R.A. (2018). Review of handpump-borehole implementation in Uganda. Nottingham, UK: BGS (OR/18/002), Available from https://nora.nerc.ac.uk/id/eprint/520591/

Tindimugaya, C. (2004). Groundwater mapping and its implications for rural water supply coverage in Uganda. 30th WEDC International Conference, Vientiane, Lao PDR, 2004. Available from https://wedc-knowledge.lboro.ac.uk/resources/conference/30/Tindimugaya.pdf

UNICEF/Skat (2016). Professional water well drilling: A UNICEF guidance note. St Gallen, Switzerland: Skat and UNICEF. Available from http://www.rural-water-supply.net/en/resources/details/775

Acknowledgements

This work is part of the Hidden Crisis project within the UPGro research programme – co-funded by NERC, DFID, and ESRC.

Photo: “Groundwater Supply Technology Options map on display in the Kayunga District Water Office” (Source: Elisabeth Liddle).

Comprendre l’invisible: les efforts de l’Ouganda pour améliorer l’accès aux données détaillées sur les eaux souterraines

Il s’agit du second d’une série de quatre blogs intitulée ‘Le forage professionnel de puits d’eau: Apprendre de l’Ouganda” de Elisabeth Liddle et d’un webinaire en 2019 sur le forage de puits professionnel. Cette série s’appuie sur les recherches menées en Ouganda par Liddle et Fenner (2018). Nous vous invitons à nous faire part de vos commentaires en réponse à ce blog ci-dessous. [Note : Le blog original a été révisé le 3 avril 2019 pour corriger une représentation inexacte de la situation].

Si l’accès à des sources d’eau améliorées a augmenté de manière progressive dans l’ensemble de l’Afrique subsaharienne rurale, plusieurs études ont soulevé des problèmes concernant la capacité de ces sources à fournir des quantités d’eau sûres et adéquates à long terme (Foster et al., 2018 ; Kebede et al., 2017 ; Owor et al., 2017 ; Adank et al., 2014). La conception et l’emplacement des forages sont essentiels à ce que le point d’eau continue à fournir des quantités d’eau sûres et adéquates. L’accès à des informations détaillées et précises sur les eaux souterraines peut grandement faciliter le choix du site et la conception des forages (UNICEF/Skat, 2016 ; Carter et al., 2014).

La Fondation Skat et l’UNICEF ont été les principaux défenseurs d’un accès plus répandu à des données détaillées sur les eaux souterraines, y compris la récente note d’orientation qui souligne que “l’information sur les eaux souterraines” est essentielle à l’amélioration de la qualité de la mise en œuvre des forages dans les pays à revenus faible et intermédiaire (voir Figure 1 ; UNICEF/Skat, 2016). Dans ce blog, je donne un aperçu de la manière dont l’Ouganda a cherché à améliorer l’accès aux données sur les eaux souterraines ces dernières années.

Fig. 1: Six domaines d’engagement pour l’exploitation professionnelle des eaux souterraines (Skat/ UNICEF, 2018)

La cartographie des ressources en eaux souterraines en Ouganda

Des mesures importantes ont été prises ces dernières années pour améliorer l’accès aux données détaillées sur les eaux souterraines en Ouganda. La plupart de ces activités ont débuté en 2000 lorsque la Direction de la gestion des ressources en eau du Ministère de l’eau et de l’environnement a lancé un projet de cartographie des eaux souterraines à l’échelle nationale. À l’aide de données tirées des rapports d’achèvement des forages que les entrepreneurs de forage doivent soumettre chaque trimestre, la Direction de la gestion des ressources en eau a élaboré une série de cartes pour chaque district. Il s’agit notamment des cartes suivantes :

Carte de localisation des sources d’eau, avec carte géologique à l’appui.
Carte des technologies recommandées par source d’eau (la recommandation de la technologie se base sur la profondeur de l’impact de l’aquifère principal et les données sur le rendement).
Carte des conditions hydrogéologiques – elle comprend 4 sous-cartes : Profondeur présumée du premier impact avec l’eau[1], la profondeur présumée de l’impact avec l’aquifère principal[2], l’épaisseur présumée des morts-terrains[3], etla profondeur statique présumée du niveau d’eau[4].
Carte de la qualité des eaux souterraines : celle-ci met en évidence les zones où la qualité de l’eau pourrait poser problème.
Potentiel des eaux souterraines – Carte du taux de réussite du forage : combine le taux de réussite prévu du rendement [5] et les conditions prévues de la qualité de l’eau.

Tindimugaya (2004) donne plus de détails sur ces cartes, ainsi que les façons dont elles peuvent faciliter le processus de mise en œuvre. Un exemple de cartes pour le district de Kibaale est disponible sur le site Web du Ministère de l’Eau et de l’Environnement.

Ce travail de cartographie est en cours, cependant, en mai 2017, la Direction de la gestion des ressources en eau avait cartographié 85% des districts de l’Ouganda. L’ampleur de ces cartes et le niveau de détail qu’elles contiennent sont remarquables. Ces cartes ont rendu service aux collectivités locales de district, aux organisations non gouvernementales et autres responsables de l’implantation et de la construction des points d’eau.

Des défis persistents

Bien que l’Ouganda ait fait des progrès remarquables au cours des dernières années grâce à ses efforts de cartographie des eaux souterraines, plusieurs défis persistent (Liddle et Fenner, 2018), liés pour la plupart à l’exactitude des données. Lors d’entretiens avec les personnes interrogées en Ouganda dans le cadre de nos recherches, on nous a signalé que dans certains cas (mais pas tous), des données inexactes ont été fournies. Lorsqu’on examine les raisons pour lesquelles des données inexactes sont parfois fournies aux autorités, deux poins clés ont été relevés :

Souvent, il n’y a pas de consultant qualifié sur place à temps plein pour la supervision du forage. Bien qu’il incombe à l’entrepreneur de forage de faire consigner le journal de forage par un membre du personnel, un superviseur indépendant devrait également tenir un journal et vérifier l’exactitude du journal du foreur avant de le soumettre à la Direction de la gestion des ressources en eau. Cependant, sans supervision à temps plein, cela n’est pas possible. De plus, même avec une supervision à temps plein, si le superviseur n’est pas un hydrogéologue, il est peu probable qu’il tiendra des registres précis et détaillés.
Les conditions de paiement forfaitaires “pas d’eau, pas de paiement”, selon lesquelles les foreurs ougandais sont souvent payés (voir le blog “Contrats clés en main pour l’implantation et le forage des puits d’eau“). Ces modalités de paiement exigent des foreurs qu’ils prouvent qu’ils aient foré avec succès un point d’eau pour être payés; par conséquent, certains foreurs auraient exagéré le rendement d’un forage donné afin d’être payés. Les données faussées ainsi obtenues sont préoccupantes, car non seulement ces forages auront du mal à fournir des quantités adéquates d’eau après construction, mais les données liées à leur haut rendement sont ensuite saisies dans la base de données des journaux de forage et utilisées pour produire les cartes hydrogéologiques. Il est essentiel d’améliorer la qualité de la supervision des forages et de veiller à ce que les données ne soient pas faussées de cette façon si l’on veut que les cartes de la Direction de la gestion des ressources en eau soient plus précises à l’avenir.

Dans l’ensemble, l’Ouganda a fait des progrès remarquables au cours des deux dernières décennies en augmentant le niveau d’information sur les eaux souterraines disponible dans le pays. Il y a très peu d’exemples sur le continent africain comparables à ce que l’Ouganda a accompli ! Comme indiqué plus haut, les cartes qui en résultent représentent un grand avantage pour les autorités locales de district, les organisations non gouvernementales et les autres responsables de l’implantation et de la construction des points d’eau.

Il est essentiel pour l’Ouganda d’améliorer la précision des rapports d’achèvement des forages. En outre, d’autres pays pourront prendre conscience de ces défis lorsqu’ils entreprennent leurs propres exercices de cartographie et veiller à ce que les mesures nécessaires soient en place pour prévenir ces problèmes dans leur contexte.

Qu’en pensez-vous?

Alors, qu’en pensez-vous? Avez-vous de l’expérience en matière de collecte ou gestion de données sur les eaux souterraines? Cela devrait-il être entrepris dans votre pays? Vous pouvez répondre ci-dessous en postant un commentaire, ou vous pouvez participer au webinaire en direct le 14 mai (inscriptions ici)

[1] Profondeur présumée du premier impact avec l’eau : la profondeur à laquelle un foreur est susceptible de rencontrer des eaux souterraines pour la première fois. Dans la plupart des cas, le foreur devra poursuivre le forage au-delà de ce point pour que le trou de forage puisse fournir suffisamment d’eau aux utilisateurs.

[2] Profondeur présumée de l’impact avec l’aquifère principal : la profondeur à laquelle un foreur est susceptible de trouver l’aquifère principal qui sera en mesure de fournir des quantités suffisantes d’eau aux utilisateuCarte de la qualité des eaux souterraines : celle-ci met en évidence les zones où la qualité de l’eau pourrait poser problème.

[3] Les morts-terrains désignent les matériaux non consolidés qui recouvrent le substratum rocheux. La carte de l’épaisseur prévue des morts-terrains met en évidence la profondeur prévue des matériaux non consolidé dans l’ensemble de l’Ouganda.

[4] Profondeur statique présumée du niveau d’eau = la profondeur d’eau souterraine attendue sans perturbation de pompage.

[5] Le ” taux de réussite du rendement ” fait référence à un forage capable de supporter un débit de pompage de 500 litres/heure. Si un forage peut maintenir ce taux de pompage, il est considéré comme une réussite en ce qui concerne le rendement.

Références

Liddle, E.S. and Fenner, R.A. (2018). Review of handpump-borehole implementation in Uganda. Nottingham, UK: BGS (OR/18/002), Available from https://nora.nerc.ac.uk/id/eprint/520591/

UNICEF/Skat (2016). Professional water well drilling: A UNICEF guidance note. St Gallen, Switzerland: Skat and UNICEF. Available from http://www.rural-water-supply.net/en/resources/details/775

Remerciements

Ce travail fait partie du projet Hidden Crisis du programme de recherche UPGro – cofinancé par le NERC, le DFID et l’ESRC.

Photo: “Carte des technologies recommandées par source d’eau souterraine dans la division Eau du bureau du district de Kayunga” (Source: Elisabeth Liddle).

La Journée mondiale de l’eau / World Water Day – stay inquisitive, keep learning

Amongst the flurry of activity related to World Water Day, we would like to highlight A guide to equitable water safety planning prepared by the WHO. This tool offers step-by-step guidance and good practice examples of how to consider equity through the WSP process to help achieve safe water for all.

We also would like to encourage you to sign up for the new RWSN webinar series dedicated to the 2019 Theme “Leave no one behind” in rural water supply, running every Tuesday from April 16th, 2019 until June 04th, 2019, in English, French and/or Spanish. Click here to register for the webinar series in English and find more information here. Finally, keep up to date with your rural water supply knowledge through our new RWSN Talks. Be sure to subscribe to the playlist to be notified as we post new presentations from our rich archive of webinar recordings.

Finally, keep up to date with your rural water supply knowledge through our new RWSN Talks. Be sure to subscribe to the playlist to be notified as we post new presentations from our rich archive of webinar recordings.

Parmi les nombreuses activités liées à la Journée mondiale de l’eau, nous aimerions souligner le guide pour une planification équitable de la sécurité de l’eau préparé par l’OMS. Cet outil offre des conseils étape par étape et des exemples de bonnes pratiques sur la façon de tenir compte de l’équité dans le cadre du processus du planification pour la sécurité de l’eau afin d’assurer la salubrité de l’eau pour tous.

Nous aimerions également vous encourager à vous inscrire à la nouvelle série de webinaires du RWSN consacrés au thème « Ne laisser personne de côté » dans l’approvisionnement en eau en milieu rural, qui auront lieu chaque mardi du 16 avril 2019 au 04 juin 2019 en anglais, en français et/ou en espagnol. Cliquez ici pour vous inscrire aux webinaires en français et trouvez plus d’informations ici.

Enfin, restez au courant de vos connaissances en matière d’approvisionnement en eau en milieu rural grâce à nos nouveaux RWSN Talks – en français