Bill & Melinda Gates Foundation
In 2017, as the partnership was ending, the WSH team commissioned Mathematica to conduct an ex post process evaluation to identify lessons learned from this unique collaboration. The mixed methods process evaluation drew on program documents; administrative data; key informant interviews with Foundation and USAID staff, sector experts, and grantees; and an online survey of applicants to the WASH for Life funding window.

Photo credit: Vic Hinterlang for SOIL.
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