Drinking water contamination in Flint, Michigan, has garnered much-needed nationwide attention, but such contamination is neither isolated, nor a primarily urban problem. A hidden water crisis is straining thousands of smaller communities that share Flint’s risk factors—shrinking populations, social marginalization, and deficient funds. This Article posits that the Safe Drinking Water Act’s increasingly decentralized monitoring and funding scheme has drained communities of the capacity to deliver safe water.