Jefferson County · 3,520 residents · 1 water system
10
Contaminants detected
2
PFAS compounds
420
Hardness (mg/L)
0
Above legal limits
2
Above health guidelines
Waterloo 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, Total Trihalomethanes, and 6 others. PFAS compounds have been detected at trace levels in Waterloo water. Water hardness is 420 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.
Contaminants detected in Waterloo water
10 total
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Waterloo 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, Total Trihalomethanes, Haloacetic Acids (HAA5). 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 Waterloo water?
Monitoring has detected 10 contaminants in Waterloo's water supply: Lead, Nitrate, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Barium, Fluoride, Orthophosphate, Phosphorus Total. Additionally, 2 PFAS compounds have been detected at trace levels. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Waterloo water have PFAS?
Yes. 2 PFAS compounds have been detected in Waterloo's water supply at trace levels. PFAS are sometimes called "forever chemicals" because they do not break down in the environment. The EPA has set Maximum Contaminant Levels for several PFAS compounds. View the detailed report for specific concentrations.
Is Waterloo water hard?
Yes. Waterloo water has a hardness of 420 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 Waterloo get its drinking water?
Waterloo'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. Waterloo is served by one water system: WATERLOO WATERWORKS.
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