Skip to content

Water Quality Report

Oconto Falls, WI

Oconto County · 2,972 residents · 2 water systems

12

Contaminants detected

0

PFAS compounds

230

Hardness (mg/L)

0

Above legal limits

4

Above health guidelines

Oconto Falls drinking water comes from groundwater wells. Based on the most recent monitoring data, 12 contaminants have been detected in the water supply, including Lead, Arsenic, Copper, Radium, and 8 others. Water hardness is 230 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Oconto Falls water

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

Lead0.011 / 0.015 mg/L
73% of EPA limit
Arsenic0.0055 / 0.01 mg/L
55% of EPA limit
Copper160 / 1300 ug/L
12% of EPA limit
Radium3.4 / 5 pCi/L
69% of EPA limit
Uranium1.1 / 30 ug/L
4% of EPA limit
Gross Alpha Radiation12 / 15 pCi/L
80% of EPA limit
Total Trihalomethanes0.08 / 80 ug/L
0% of EPA limit
1% of EPA limit
Nickel0.0028 mg/L
UnregulatedInorganic
Selenium0.0051 / 0.05 mg/L
10% of EPA limit
Barium0.14 / 2 mg/L
7% of EPA limit
Fluoride0.14 / 4 mg/L
4% of EPA limit
Microplastics (not routinely tested)

Other cities in Oconto County

Water quality reports for nearby Wisconsin communities.

Frequently asked questions

Is Oconto Falls, WI tap water safe to drink?
Oconto Falls 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. 12 contaminants have been detected in the water supply, including Lead, Arsenic, 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 Oconto Falls water?
Monitoring has detected 12 contaminants in Oconto Falls's water supply: Lead, Arsenic, Copper, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Selenium, Barium, Fluoride. 4 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Is Oconto Falls water hard?
Yes. Oconto Falls 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 Oconto Falls get its drinking water?
Oconto Falls'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. Oconto Falls is served by 2 water systems, the largest being OCONTO FALLS WATERWORKS (serving 2,892 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.

Free water assessment in Oconto Falls.

Schedule an onsite consultation.