A major update in our assessment of water quality interventions

Abstract

GiveWell has seen new evidence that has led us to substantially update our view of the promisingness of water treatment interventions, such as chlorination. We’re sharing this news in brief form before we’ve published a grant page, because we’re excited about the potential of this grant and what it represents. It’s an area of work we haven’t supported to a significant degree in the past, but one that we now think could absorb hundreds of millions of dollars in funding for cost-effective programming.