Trading-off health risk and latency: Evidence from water pollution in Bangladesh

The Ganges Delta of Bangladesh faces a major environmental and development problem from arsenic groundwater contamination. Here we address the rural population’s health preferences and estimate how much a given risk of arsenicosis would have to be postponed to make that risk acceptable. We also derive implicit rates of time preference associated with this health hazard based on an experimental field study in Bangladesh. Results suggest that households exposed to arsenic contaminated water do trade-off risk against latency of developing arsenicosis. The results can also be interpreted as if households face a time-varying (hyperbolic) pure rate of time preference.