Underserved Drinking Water System Grant Program supports small Wisconsin public water systems with planning and improvements that address drinking water violations and restore compliance.
Funder: Wisconsin Department of Natural Resources
Due Dates: September 30, 2026 (application deadline; earlier if funds are exhausted)
Funding Amounts: Up to $240,000 per eligible water system; typical performance period of 18 months
Summary: Supports small Wisconsin public water systems in resolving active drinking water violations or action level exceedances.
Key Information: Only other-than-municipal community systems and nonprofit non-transient non-community systems qualify.
The Wisconsin Department of Natural Resources (DNR) runs this program with funding from the U.S. Environmental Protection Agency under the federal Water Infrastructure Improvements for the Nation Act. It helps small, underserved Wisconsin public water systems address regulated contaminants and return to compliance with the Safe Drinking Water Act.
Eligible work can include project planning, technical and managerial assistance, staff training, service line inventories, non-routine testing, new water sources, connections to systems with safe water, distribution improvements, service line replacement, storage, and treatment facilities. Projects must address an active eligible violation or action level exceedance.