Skip to content

Water Quality Report

Cuba City, WI

Grant County · 2,327 residents · 2 water systems

18

Contaminants detected

1

PFAS compounds

230

Hardness (mg/L)

0

Above legal limits

3

Above health guidelines

Cuba City drinking water comes from groundwater wells. Based on the most recent monitoring data, 18 contaminants have been detected in the water supply, including Lead, Nitrate, Arsenic, Copper, and 14 others. PFAS compounds have been detected at trace levels in Cuba City water. Water hardness is 230 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Cuba City 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 / 10 mg/L
20% of EPA limit
Arsenic0.0008 / 0.01 mg/L
8% of EPA limit
Copper124 / 1300 ug/L
10% of EPA limit
Radium0.94 / 5 pCi/L
19% of EPA limit
Gross Alpha Radiation0.21 / 15 pCi/L
1% of EPA limit
Tetrachloroethylene0.49 / 5 ug/L
10% of EPA limit
2% of EPA limit
4% of EPA limit
Atrazine0.0084 / 3 ug/L
0% of EPA limit
Selenium0.002 / 0.05 mg/L
4% of EPA limit
Xylenes10.8 / 10000 ug/L
0% of EPA limit
Fluoride0.77 / 4 mg/L
19% of EPA limit
Ethylbenzene1.4 / 700 ug/L
0% of EPA limit
Styrene3 / 100 ug/L
3% of EPA limit
Metolachlor0.0095 ug/L
UnregulatedVOC
Barium0.064 / 2 mg/L
3% of EPA limit
Methyl Tert Butyl Ether0.3 ug/L
Unregulated
PFAS (1 compounds detected)
Microplastics (not routinely tested)

Other cities in Grant County

Water quality reports for nearby Wisconsin communities.

Frequently asked questions

Is Cuba City, WI tap water safe to drink?
Cuba City 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. 18 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 Cuba City water?
Monitoring has detected 18 contaminants in Cuba City's water supply: Lead, Nitrate, Arsenic, Copper, Radium, Gross Alpha Radiation, Tetrachloroethylene, Total Trihalomethanes, Haloacetic Acids (HAA5), Atrazine, Selenium, Xylenes, Fluoride, Ethylbenzene, Styrene, Metolachlor, Barium, Methyl Tert Butyl Ether. Additionally, 1 PFAS compounds have been detected at trace levels. 3 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Cuba City water have PFAS?
Yes. 1 PFAS compounds have been detected in Cuba City'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 Cuba City water hard?
Yes. Cuba City water has a hardness of 230 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 Cuba City get its drinking water?
Cuba 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. Cuba City is served by 2 water systems, the largest being CUBA CITY WATERWORKS (serving 2,141 people).

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.