Annual Drinking Water Reports

Every year, DNR summarizes compliance with the drinking water requirements by the state’s public water systems in an annual report. This report highlights many efforts to help public water systems provide a safe and adequate supply of drinking water in our state.

Wisconsin’s 11,000 plus public water systems typically have a high rate of compliance with water quality requirements. Last year, more than 99% of the state’s public water systems met the health-based safe drinking water standards.

DNR is responsible for implementing the Safe Drinking Water Act to safeguard Wisconsin’s drinking water. Publishing these annual reports fulfills one of Wisconsin’s obligations under the Act.