Water Quality Report
Berlin, WI
Green Lake County · 5,524 residents · 1 water system
11
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
3
Above health guidelines
Berlin drinking water comes from groundwater wells. Based on the most recent monitoring data, 11 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, and 7 others. PFAS testing has been conducted with no detections.
Contaminants detected in Berlin water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.00055 / 0.015 mg/L
4% of EPA limit
Nitrate1.4 / 10 mg/L
14% of EPA limit
Copper130 / 1300 ug/L
10% of EPA limit
Radium3.4 / 5 pCi/L
68% of EPA limit
Uranium0.844 / 30 ug/L
3% of EPA limit
Gross Alpha Radiation3.1 / 15 pCi/L
21% of EPA limit
Total Trihalomethanes15.7 / 80 ug/L
20% of EPA limit
Haloacetic Acids (HAA5)3 / 60 ug/L
5% of EPA limit
Nickel0.0019 mg/L
UnregulatedInorganic
Cadmium0.00014 / 0.005 mg/L
3% of EPA limit
Beryllium0.00016 / 0.004 mg/L
4% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)
Water systems serving Berlin
Other cities in Green Lake County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Berlin, WI tap water safe to drink?
Berlin tap water meets EPA legal standards (Maximum Contaminant Levels). However, 3 contaminants are present above independent health guidelines, which are often stricter than legal limits. 11 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 Berlin water?
Monitoring has detected 11 contaminants in Berlin's water supply: Lead, Nitrate, Copper, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Cadmium, Beryllium. 3 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Berlin water have PFAS?
Berlin'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.
Where does Berlin get its drinking water?
Berlin'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. Berlin is served by one water system: BERLIN WATERWORKS.
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