Dr Sonia Hoque, University of Oxford
Having access to 24/7 potable piped water in the comfort of our dwelling is a luxury that many of us take for granted. In the UK, an annual water and sewerage bill of £400 accounts for about 1% of the annual average household income of £40,000. This ‘safely managed’ water service, defined as having access to an improved source within one’s premises, is well within the widely established global affordability threshold of 3-5% of one’s household income. Estimating payments for water as a percentage of households monthly expenditures may adequately reflect ‘affordability’ in contexts where households have connections to piped water systems or rely on paid sources only.