Public Water Systems

About 60% of Wisconsinites drink water from public water supplies.

There are four types of public water systems in Wisconsin, municipal community, other-than-municipal community, non-transient non-community, and transient non-community, depending on location and the number of people they serve.

Public Water System Data Available

Wisconsin Tracking provides data about community water systems on their public data portal. You can also review the Department of Natural Resources' (DNR) Water Quality Data or Consumer Confidence Report for your community.

DNR maintains a safe drinking water report on municipal water systems on their drinking water webpage.

Boil Water Notices

Public water systems can sometimes have elevated bacteria levels in their treated drinking water. If this is the case, a boil water notice may be issued.

Call your doctor and local health department if you experience the following during a boil water notice:

  • Diarrhea
  • Cramps
  • Nausea

These symptoms may be caused by factors other than unsafe water.


Questions? Can't find what you're looking for? Contact us!

Last Revised: October 2, 2019