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Water Quality Report

Watertown, WI

Carver County · 5,050 residents · 2 water systems

2

Contaminants detected

1

PFAS compounds

Hardness (mg/L)

0

Above legal limits

1

Above health guidelines

Watertown drinking water comes from groundwater wells. Based on the most recent monitoring data, 2 contaminants have been detected in the water supply, including Lead, Lithium. PFAS compounds have been detected at trace levels in Watertown water.

Contaminants detected in Watertown water

Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.

Lead0.004 / 0.015 mg/L
27% of EPA limit
Lithium24 ug/L
Unregulated
PFAS (1 compounds detected)
Microplastics (not routinely tested)

Other cities in Carver County

Water quality reports for nearby Minnesota communities.

Frequently asked questions

Is Watertown, WI tap water safe to drink?
Watertown tap water meets EPA legal standards (Maximum Contaminant Levels). However, 1 contaminant is present above independent health guidelines, which are often stricter than legal limits. 2 contaminants have been detected in the water supply, including Lead, Lithium. 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 Watertown water?
Monitoring has detected 2 contaminants in Watertown's water supply: Lead, Lithium. Additionally, 1 PFAS compounds have been detected at trace levels. 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Watertown water have PFAS?
Yes. 1 PFAS compounds have been detected in Watertown'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.
Where does Watertown get its drinking water?
Watertown'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. Watertown is served by 2 water systems, the largest being Watertown (serving 4,550 people).

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