Water Quality Report
Cedar Grove, WI
St Croix County · 2,213 residents · 1 water system
11
Contaminants detected
0
PFAS compounds
—
Hardness (mg/L)
0
Above legal limits
3
Above health guidelines
Cedar Grove 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, Arsenic, Copper, and 7 others.
Contaminants detected in Cedar Grove water
Detection does not necessarily mean unsafe levels. See individual reports for concentrations and EPA limits.
Lead0.0089 / 0.015 mg/L
59% of EPA limit
Nitrate0.37 / 10 mg/L
4% of EPA limit
Arsenic0.0018 / 0.01 mg/L
18% of EPA limit
Copper360 / 1300 ug/L
28% of EPA limit
Total Trihalomethanes14.1 / 80 ug/L
18% of EPA limit
Haloacetic Acids (HAA5)7.1 / 60 ug/L
12% of EPA limit
Nickel0.001 mg/L
UnregulatedInorganic
Xylenes0.3 / 10000 ug/L
0% of EPA limit
Barium0.025 / 2 mg/L
1% of EPA limit
Fluoride0.72 / 4 mg/L
18% of EPA limit
Beryllium0.00013 / 0.004 mg/L
3% of EPA limit
Microplastics (not routinely tested)
Water systems serving Cedar Grove
Other cities in St Croix County
Water quality reports for nearby Wisconsin communities.
Frequently asked questions
Is Cedar Grove, WI tap water safe to drink?
Cedar Grove 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, Arsenic, Copper, Total Trihalomethanes. 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 Cedar Grove water?
Monitoring has detected 11 contaminants in Cedar Grove's water supply: Lead, Nitrate, Arsenic, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Xylenes, Barium, Fluoride, Beryllium. 3 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Where does Cedar Grove get its drinking water?
Cedar Grove'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. Cedar Grove is served by one water system: CEDAR GROVE 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.