The Trump administration’s decision to slash nearly all U.S. foreign aid has left dozens of water and sanitation projects half-finished across the globe, creating new hazards for some of the people they were designed to benefit, Reuters has found.

Reuters has identified 21 unfinished projects in 16 countries after speaking to 17 sources familiar with the infrastructure plans. Most of these projects have not previously been reported.

With hundreds of millions of dollars in funding cancelled since January, workers have put down their shovels and left holes half dug and building supplies unguarded, according to interviews with U.S. and local officials and internal documents seen by Reuters.