Skip to content

Water Quality Report

Mcfarland, WI

Dane County · 9,676 residents · 1 water system

10

Contaminants detected

6

PFAS compounds

406

Hardness (mg/L)

0

Above legal limits

1

Above health guidelines

Mcfarland drinking water comes from groundwater wells. Based on the most recent monitoring data, 10 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Total Trihalomethanes, and 6 others. PFAS compounds have been detected at trace levels in Mcfarland water. Water hardness is 406 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Mcfarland water

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

Lead0.0021 / 0.015 mg/L
14% of EPA limit
Nitrate2.9 / 10 mg/L
29% of EPA limit
Copper57.6 / 1300 ug/L
4% of EPA limit
10% of EPA limit
Atrazine0.03 / 3 ug/L
1% of EPA limit
Barium0.0254 / 2 mg/L
1% of EPA limit
Fluoride0.107 / 4 mg/L
3% of EPA limit
Chromium (total)0.0011 / 0.1 mg/L
1% of EPA limit
Antimony0.0011 / 0.006 mg/L
19% of EPA limit
Heptachlor Epoxide0.0087 / 0.2 ug/L
4% of EPA limit
PFAS (6 compounds detected)
Microplastics (not routinely tested)

Other cities in Dane County

Water quality reports for nearby Wisconsin communities.

Frequently asked questions

Is Mcfarland, WI tap water safe to drink?
Mcfarland tap water meets EPA legal standards (Maximum Contaminant Levels). However, 1 contaminant is present above independent health guidelines, which are often stricter than legal limits. 10 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Total Trihalomethanes, Atrazine. 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 Mcfarland water?
Monitoring has detected 10 contaminants in Mcfarland's water supply: Lead, Nitrate, Copper, Total Trihalomethanes, Atrazine, Barium, Fluoride, Chromium (total), Antimony, Heptachlor Epoxide. Additionally, 6 PFAS compounds have been detected at trace levels. 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Mcfarland water have PFAS?
Yes. 6 PFAS compounds have been detected in Mcfarland'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 Mcfarland water hard?
Yes. Mcfarland water has a hardness of 406 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 Mcfarland get its drinking water?
Mcfarland'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. Mcfarland is served by one water system: MCFARLAND WATERWORKS.

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.