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Water Quality Report

Fennimore, WI

Grant County · 2,507 residents · 1 water system

12

Contaminants detected

0

PFAS compounds

355

Hardness (mg/L)

0

Above legal limits

2

Above health guidelines

Fennimore drinking water comes from groundwater wells. Based on the most recent monitoring data, 12 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 8 others. PFAS testing has been conducted with no detections. Water hardness is 355 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Fennimore water

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

Lead0.0016 / 0.015 mg/L
11% of EPA limit
Nitrate0.021 / 10 mg/L
0% of EPA limit
Arsenic0.002 / 0.01 mg/L
20% of EPA limit
Copper92.6 / 1300 ug/L
7% of EPA limit
Total Trihalomethanes3.8 / 80 ug/L
5% of EPA limit
Haloacetic Acids (HAA5)12.3 / 60 ug/L
20% of EPA limit
Nickel0.0099 mg/L
UnregulatedInorganic
Selenium0.002 / 0.05 mg/L
4% of EPA limit
Fluoride0.65 / 4 mg/L
16% of EPA limit
Thallium0.0002 / 0.002 mg/L
10% of EPA limit
Antimony0.001 / 0.006 mg/L
17% of EPA limit
Barium0.0428 / 2 mg/L
2% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)

Water systems serving Fennimore

FENNIMORE WATERWORKS

2,507 servedGroundwater12 contaminants2 above guidelines
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Other cities in Grant County

Water quality reports for nearby Wisconsin communities.

BagleyBloomingtonBlue RiverBoscobelCassvilleCuba CityDickeyvilleHazel GreenKielerLancasterLivingstonMontfort

Frequently asked questions

Is Fennimore, WI tap water safe to drink?
Fennimore 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. 12 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 Fennimore water?
Monitoring has detected 12 contaminants in Fennimore's water supply: Lead, Nitrate, Arsenic, Copper, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Selenium, Fluoride, Thallium, Antimony, Barium. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Fennimore water have PFAS?
Fennimore'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 Fennimore water hard?
Yes. Fennimore water has a hardness of 355 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 Fennimore get its drinking water?
Fennimore'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. Fennimore is served by one water system: FENNIMORE WATERWORKS.

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