Syllabus: Distribution of key natural resources
Context and Importance
- Water is essential and has no substitute, yet safe access remains limited globally.
- Only 30% of people in low-income countries access potable water, with rural access at 14%.
- India faces similar challenges, with many communities struggling to obtain safe drinking water.
- Existing research often measures valuation indirectly through technologies, hedonic pricing, or piped-water adoption.
- The study offers a direct approach to measure household valuation of potable water.
Study Design in Odisha
- Odisha ranks poorly in water access, with 83% households lacking piped connections in 2021.
- A 2023 survey found 41% villages still lacking safe drinking water.
- Researchers implemented a randomised controlled trial across 160 villages, with successful coverage in 99 villages.
- Clean water was home-delivered, removing burdens of taste, collection time and transport.
- Households were randomly assigned across three experimental arms to measure valuation precisely.
Experimental Arms
- Price Arm: Households purchased clean water at subsidised rates, revealing willingness to pay and price sensitivity.
- Free-Water Arm: Zero-price water established unconstrained demand, independent of affordability limits.
- Exchangeable Entitlement Arm: Households chose between water and equal-value cash, revealing willingness to accept compensation to forgo water.
Key Findings
- Both WTP and WTA were substantially higher than earlier indirect estimates.
- High WTA signalled strong reluctance to surrender guaranteed clean water.
- Demand declined moderately with rising prices, reflecting water’s status as a necessity.
- Many households preferred water over equivalent cash, showing high intrinsic valuation.
- Access to delivered water reduced reliance on unsafe sources and lowered collection burdens.
- Households reported improved physical well-being, indicating immediate perceived benefits.
Interpretation and Policy Implications
- Households value clean water highly when non-monetary burdens are removed.
- Low uptake of chlorine or filters reflects aversion to effort, taste and uncertainty, not low valuation.
- Policy options include decentralised delivery, targeted subsidies, and entitlement-based support.
- The study reframes access as ensuring clean, reliable and dignified water, not merely technology adoption.
