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Water Quality Report

Forest Lake, MN

Washington County · 12,040 residents · 2 water systems

14

Contaminants detected

1

PFAS compounds

—

Hardness (mg/L)

0

Above legal limits

3

Above health guidelines

Forest Lake drinking water comes from groundwater wells. Based on the most recent monitoring data, 14 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Radium, and 10 others. PFAS compounds have been detected at trace levels in Forest Lake water.

Contaminants detected in Forest Lake water

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

Lead0.002 / 0.015 mg/L
13% of EPA limit
Nitrate0.34 / 10 mg/L
3% of EPA limit
Arsenic0.0005 / 0.01 mg/L
5% of EPA limit
Radium0.5 / 5 pCi/L
10% of EPA limit
Trichloroethylene0.05 / 5 ug/L
1% of EPA limit
Tetrachloroethylene0.1 / 5 ug/L
2% of EPA limit
Total Trihalomethanes20.1 / 80 ug/L
25% of EPA limit
12% of EPA limit
1,2-Dichloroethane0.11 / 5 ug/L
2% of EPA limit
Ethylbenzene0.27 / 700 ug/L
0% of EPA limit
Toluene0.0002 / 1000 ug/L
0% of EPA limit
Fluoride0.69 / 4 mg/L
17% of EPA limit
PFPeA (Perfluoropentanoic Acid)0.6 ng/L
UnregulatedPFAS
PFBA (Perfluorobutanoic Acid)16 ng/L
UnregulatedPFAS
PFAS (1 compounds detected)
Microplastics (not routinely tested)

Other cities in Washington County

Water quality reports for nearby Minnesota communities.

Frequently asked questions

Is Forest Lake, MN tap water safe to drink?
Forest Lake 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. 14 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Radium, Trichloroethylene. 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 Forest Lake water?
Monitoring has detected 14 contaminants in Forest Lake's water supply: Lead, Nitrate, Arsenic, Radium, Trichloroethylene, Tetrachloroethylene, Total Trihalomethanes, Haloacetic Acids (HAA5), 1,2-Dichloroethane, Ethylbenzene, Toluene, Fluoride, PFPeA (Perfluoropentanoic Acid), PFBA (Perfluorobutanoic Acid). Additionally, 1 PFAS compounds have been detected at trace levels. 3 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Forest Lake water have PFAS?
Yes. 1 PFAS compounds have been detected in Forest Lake'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 Forest Lake get its drinking water?
Forest Lake's drinking water comes from groundwater wells that draw from underground aquifers. The water is treated and tested according to Minnesota Department of Health and EPA requirements before distribution. Forest Lake is served by 2 water systems, the largest being Forest Lake (serving 11,800 people).

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