# Neil Buddy Shah has been appointed CEO of the Clinton Health Access Initiative

I am excited to share that GiveWell Managing Director Buddy Shah has been appointed CEO of the Clinton Health Access Initiative (CHAI), a major global health organization working across a range of issues including malaria prevention and maternal and neonatal health. This news is bittersweet for me. I’m sad to be losing the talent, advice, and thought partnership Buddy brought to GiveWell, but I’m thrilled that he is taking up this position—the global health sector will be stronger for it.

CHAI is gaining a great leader in Buddy. But perhaps more importantly for GiveWell and our supporters, this appointment is a signal that effective giving is contributing to more corners of the global health landscape than ever before. Buddy is a strong champion of impact maximization, and I am excited that he will apply this lens in his new role.

# A major update in our assessment of water quality interventions

As we continue to grow, GiveWell seeks to maximize both the cost-effectiveness of the funding we direct and the likely room for more funding of the programs we support. We think we’ve identified a category of interventions that rates really well on both: water treatment, such as chlorination.

This is a major update for us. Before 2020, based on the available evidence, we didn’t believe that water quality interventions had a large enough effect on mortality to make them a competitive target for funding. We’ve since seen new evidence that has led us to significantly increase our estimate of the mortality reduction in young children that’s attributable to these interventions: a 14% reduction in mortality from any cause, up from around 3%.