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Water Quality Report

Lacrosse, WI

La Crosse County · 98 residents · 2 water systems

11

Contaminants detected

5

PFAS compounds

—

Hardness (mg/L)

0

Above legal limits

2

Above health guidelines

Lacrosse 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. PFAS compounds have been detected at trace levels in Lacrosse water.

Contaminants detected in Lacrosse water

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

Lead0 / 0.015 mg/L
0% of EPA limit
Nitrate2.4 / 10 mg/L
24% of EPA limit
Arsenic0.003 / 0.01 mg/L
30% of EPA limit
Copper281 / 1300 ug/L
22% of EPA limit
Radium0.53 / 5 pCi/L
11% of EPA limit
Uranium0.39 / 30 ug/L
1% of EPA limit
PFHpA (Perfluoroheptanoic Acid)0.477 ng/L
UnregulatedPFAS
Nitrite0.02 / 1 mg/L
2% of EPA limit
Thallium0.0002 / 0.002 mg/L
10% of EPA limit
Fluoride0.03 / 4 mg/L
1% of EPA limit
Barium0.114 / 2 mg/L
6% of EPA limit
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 Lacrosse, WI tap water safe to drink?
Lacrosse 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. 11 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, Radium. 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 Lacrosse water?
Monitoring has detected 11 contaminants in Lacrosse's water supply: Lead, Nitrate, Arsenic, Copper, Radium, Uranium, PFHpA (Perfluoroheptanoic Acid), Nitrite, Thallium, Fluoride, Barium. Additionally, 5 PFAS compounds have been detected at trace levels. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Lacrosse water have PFAS?
Yes. 5 PFAS compounds have been detected in Lacrosse'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 Lacrosse get its drinking water?
Lacrosse'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. Lacrosse is served by 2 water systems, the largest being ISLAND ESTATES (serving 50 people).

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