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Water Quality Report

Bay City, WI

Pierce County · 549 residents · 2 water systems

10

Contaminants detected

0

PFAS compounds

337

Hardness (mg/L)

0

Above legal limits

4

Above health guidelines

Bay City 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, Radium, and 6 others. PFAS testing has been conducted with no detections. Water hardness is 337 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Bay City water

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

Lead0.0021 / 0.015 mg/L
14% of EPA limit
Nitrate7.5 / 10 mg/L
75% of EPA limit
Copper162 / 1300 ug/L
12% of EPA limit
Radium0.02 / 5 pCi/L
0% of EPA limit
Uranium0.623 / 30 ug/L
2% of EPA limit
13% of EPA limit
27% of EPA limit
Atrazine0.048 / 3 ug/L
2% of EPA limit
Barium0.029 / 2 mg/L
1% of EPA limit
Fluoride0.11 / 4 mg/L
3% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)

Other cities in Pierce County

Water quality reports for nearby Wisconsin communities.

Frequently asked questions

Is Bay City, WI tap water safe to drink?
Bay City tap water meets EPA legal standards (Maximum Contaminant Levels). However, 4 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, 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 Bay City water?
Monitoring has detected 10 contaminants in Bay City's water supply: Lead, Nitrate, Copper, Radium, Uranium, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine, Barium, Fluoride. 4 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Bay City water have PFAS?
Bay City'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.
Is Bay City water hard?
Yes. Bay City water has a hardness of 337 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 Bay City get its drinking water?
Bay City'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. Bay City is served by 2 water systems, the largest being BAY CITY WATERWORKS (serving 499 people).

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