This WASH evidence paper aims to provide an accessible guide to existing evidence including a conceptual framework for understanding how WASH impacts on health and well-being and a description of methods used for ascertaining the health, economic and social impacts of WASH. The paper was commissioned by the DFID Water and Sanitation (WASH) and Research and Evidence Division (RED) teams and undertaken by the DFID-funded Sanitation and Hygiene Applied Research for Equity (SHARE) research programme consortium.

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