Dane drinking water comes from groundwater wells. Based on the most recent monitoring data, 10 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, and 6 others. PFAS testing has been conducted with no detections. Water hardness is 270 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.
Contaminants detected in Dane water
10 total
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Dane tap water meets EPA legal standards (Maximum Contaminant Levels). However, 2 contaminants are present above independent health guidelines, which are often stricter than legal limits. 10 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, Uranium. View the detailed report for each water system to see specific levels and how they compare to both legal limits and health guidelines.
What contaminants are in Dane water?
Monitoring has detected 10 contaminants in Dane's water supply: Lead, Nitrate, Copper, Radium, Uranium, Gross Alpha Radiation, Chromium (total), Barium, Fluoride, Gross Beta. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Dane water have PFAS?
Dane's water has been tested for PFAS compounds with no detections. Testing was conducted as part of the EPA's Unregulated Contaminant Monitoring Rule (UCMR5) program.
Is Dane water hard?
Yes. Dane water has a hardness of 270 mg/L (very hard). Hard water is not a health concern but can cause scale buildup in water heaters and appliances, reduce soap effectiveness, and leave mineral deposits. Water softeners or conditioning systems can address hardness.
Where does Dane get its drinking water?
Dane's drinking water comes from groundwater wells that draw from underground aquifers. The water is treated and tested according to Wisconsin DNR and EPA requirements before distribution. Dane is served by one water system: DANE WATERWORKS.
Check your water quality
Enter your address for a detailed report specific to your water system.
On a private well? Search your address for nearby groundwater monitoring data.