Skip to content

Water Quality Report

Colfax, WI

Dunn County · 2,181 residents · 14 water systems

7

Contaminants detected

0

PFAS compounds

32

Hardness (mg/L)

0

Above legal limits

10

Above health guidelines

Colfax drinking water comes from groundwater wells. Based on the most recent monitoring data, 7 contaminants have been detected in the water supply, including Lead, Nitrate, Radium, Uranium, and 3 others. PFAS testing has been conducted with no detections. Water hardness is 32 mg/L (soft), which is within a typical range for the region.

Contaminants detected in Colfax 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
Nitrate0.45 / 10 mg/L
5% of EPA limit
Radium0.512 / 5 pCi/L
10% of EPA limit
Uranium0.022 / 30 ug/L
0% of EPA limit
Gross Alpha Radiation0.759 / 15 pCi/L
5% of EPA limit
Barium0.0134 / 2 mg/L
1% of EPA limit
Fluoride0.27 / 4 mg/L
7% of EPA limit
PFAS (tested — none detected)
Microplastics (not routinely tested)

Water systems serving Colfax

COLFAX WATERWORKS

1,102 servedGroundwater7 contaminants
View →

KOUNTRY AIRE EST MHP III

210 servedGroundwater0 contaminants1 above guideline
View →

WALL STREET VILLAGE

191 servedGroundwater0 contaminants
View →

NEW RICHMOND ESTATES

95 servedGroundwater0 contaminants1 above guideline
View →

RIVERVIEW PARK

90 servedGroundwater0 contaminants1 above guideline
View →

KOUNTRY AIRE EST MHP I

90 servedGroundwater0 contaminants1 above guideline
View →

TAINTER WOODS CONDOMINIUMS

85 servedGroundwater0 contaminants1 above guideline
View →

RIVER VILLA MOBILE HOME COURT

60 servedGroundwater0 contaminants1 above guideline
View →

BERGHS MOBILE HOME PARK

60 servedGroundwater0 contaminants1 above guideline
View →

WHISPERING PINES MHP

60 servedGroundwater0 contaminants
View →

GREEN ACRES MOBILE HOMES

48 servedGroundwater0 contaminants1 above guideline
View →

MAUSTON GREEN ACRES

40 servedGroundwater0 contaminants1 above guideline
View →

KOUNTRY AIRE EST MHP II

25 servedGroundwater0 contaminants1 above guideline
View →

BIG MUSKY RESORT

25 servedGroundwater0 contaminants
View →

Other cities in Dunn County

Water quality reports for nearby Wisconsin communities.

BoycevilleDownsvilleElk MoundKnappMenomonieWheeler

Frequently asked questions

Is Colfax, WI tap water safe to drink?
Colfax tap water meets EPA legal standards (Maximum Contaminant Levels). However, 10 contaminants are present above independent health guidelines, which are often stricter than legal limits. 7 contaminants have been detected in the water supply, including Lead, Nitrate, Radium, Uranium, Gross Alpha Radiation. 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 Colfax water?
Monitoring has detected 7 contaminants in Colfax's water supply: Lead, Nitrate, Radium, Uranium, Gross Alpha Radiation, Barium, Fluoride. 10 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Colfax water have PFAS?
Colfax'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.
Where does Colfax get its drinking water?
Colfax'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. Colfax is served by 14 water systems, the largest being COLFAX WATERWORKS (serving 1,102 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.