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Examining the Economics of Affordability Through Water Diaries in Coastal Bangladesh

Author

Listed:
  • Sonia F. Hoque

    (School of Geography and the Environment and the Smith School of Enterprise and the Environment, University of Oxford, Oxford, United Kingdom)

  • Robert Hope

    (School of Geography and the Environment and the Smith School of Enterprise and the Environment, University of Oxford, Oxford, United Kingdom)

Abstract

Monitoring affordability of drinking water services is constrained by data gaps from traditional approaches that rely on cross-sectional data from infrequent, nationally representative surveys. Estimates of income or expenditure ratios spent on accessing a main source of drinking water are poorly equipped to reflect affordability in rural contexts where poor people often resort to multiple sources of varying costs, quality and distance to cope with unreliable or absent water supplies. Here, we present findings from an 18-week water diary study that documented daily water choices and expenditures of a stratified sample of 120 households in coastal Bangladesh. This intensive, longitudinal monitoring is supported by household surveys, water infrastructure mapping, hydrogeological analysis of salinity, automated rainfall measurements and interviews with diary participants. We identify five water expenditure typologies, ranging from those who always rely on unpaid and often poor-quality sources like shallow tubewells, pond sand filters and rainwater, to those who purchase vended water for drinking and cooking all year-round, spending 3–7% of total household expenditure. These behavioral dynamics are shaped by environmental, infrastructure and cultural factors, with household wealth being a weak indicator of behavior. We conclude that affordability measures should recognize the quality of service available and chosen by users across seasons, rather than being fixated on income or expenditure ratios for a main source. Measuring the latter without considering the former impedes the design of service delivery models appropriate for providing safe and reliable water supplies, at costs that users and society are willing to bear and sustain.

Suggested Citation

  • Sonia F. Hoque & Robert Hope, 2020. "Examining the Economics of Affordability Through Water Diaries in Coastal Bangladesh," Water Economics and Policy (WEP), World Scientific Publishing Co. Pte. Ltd., vol. 6(03), pages 1-29, July.
  • Handle: RePEc:wsi:wepxxx:v:06:y:2020:i:03:n:s2382624x19500115
    DOI: 10.1142/S2382624X19500115
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