Safe, clean drinking water is what we expect when we turn on our faucets. The Wisconsin DNR works to protect the quality and quantity of the state’s water resources and ensure the safety of drinking water. We're here to help you be better informed…
Diagnose your water concerns based on the symptoms you notice about your drinking water. Possible causes are listed with the most likely first. Get answers to these and more questions:
The Drinking Water & Groundwater Quality Standards/Advisory Levels [PDF] contains the tables:
The DNR reminds Wisconsin that the virus that has caused highly pathogenic avian influenza (HPAI) in wild birds is still present in the state. Information on HPAI can be found on our Avian Influenza webpage.