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Water Quality Report

Holmen, WI

La Crosse County · 10,264 residents · 2 water systems

22

Contaminants detected

5

PFAS compounds

412

Hardness (mg/L)

0

Above legal limits

6

Above health guidelines

Holmen drinking water comes from groundwater wells. Based on the most recent monitoring data, 22 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 18 others. PFAS compounds have been detected at trace levels in Holmen water. Water hardness is 412 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Holmen water

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

Lead0.0028 / 0.015 mg/L
19% of EPA limit
Nitrate5.7 / 10 mg/L
57% of EPA limit
Arsenic0.003 / 0.01 mg/L
30% of EPA limit
Copper367 / 1300 ug/L
28% of EPA limit
Radon258 pCi/L
UnregulatedRadionuclide
Radium0.55 / 5 pCi/L
11% of EPA limit
Uranium1.2 / 30 ug/L
4% of EPA limit
Gross Alpha Radiation0.73 / 15 pCi/L
5% of EPA limit
Tetrachloroethylene2 / 5 ug/L
40% of EPA limit
6% of EPA limit
15% of EPA limit
Nickel0.0411 mg/L
UnregulatedInorganic
Selenium0.002 / 0.05 mg/L
4% of EPA limit
Fluoride0.775 / 4 mg/L
19% of EPA limit
Di(2-ethylhexyl) phthalate0.9 / 6 ug/L
15% of EPA limit
Thallium0.0002 / 0.002 mg/L
10% of EPA limit
Nitrite0.006 / 1 mg/L
1% of EPA limit
Barium0.0919 / 2 mg/L
5% of EPA limit
Styrene0.28 / 100 ug/L
0% of EPA limit
Beryllium0.00029 / 0.004 mg/L
7% of EPA limit
Mercury (inorganic)0.0001 / 0.002 mg/L
5% of EPA limit
Pfpea0.0033 ug/L
Unregulated
PFAS (5 compounds detected)
Microplastics (not routinely tested)

Other cities in La Crosse County

Water quality reports for nearby Wisconsin communities.

Frequently asked questions

Is Holmen, WI tap water safe to drink?
Holmen tap water meets EPA legal standards (Maximum Contaminant Levels). However, 6 contaminants are present above independent health guidelines, which are often stricter than legal limits. 22 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, Radon. 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 Holmen water?
Monitoring has detected 22 contaminants in Holmen's water supply: Lead, Nitrate, Arsenic, Copper, Radon, Radium, Uranium, Gross Alpha Radiation, Tetrachloroethylene, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Selenium, Fluoride, Di(2-ethylhexyl) phthalate, Thallium, Nitrite, Barium, Styrene, Beryllium, Mercury (inorganic), Pfpea. Additionally, 5 PFAS compounds have been detected at trace levels. 6 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Holmen water have PFAS?
Yes. 5 PFAS compounds have been detected in Holmen'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.
Is Holmen water hard?
Yes. Holmen water has a hardness of 412 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 Holmen get its drinking water?
Holmen'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. Holmen is served by 2 water systems, the largest being HOLMEN WATERWORKS (serving 10,147 people).

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