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Water Quality Report

Hartford, WI

Washington County · 15,805 residents · 1 water system

13

Contaminants detected

5

PFAS compounds

450

Hardness (mg/L)

0

Above legal limits

3

Above health guidelines

Hartford drinking water comes from groundwater wells. Based on the most recent monitoring data, 13 contaminants have been detected in the water supply, including Lead, Nitrate, Copper, Radium, and 9 others. PFAS compounds have been detected at trace levels in Hartford water. Water hardness is 450 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Hartford water

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

Lead0.00086 / 0.015 mg/L
6% of EPA limit
Nitrate3.7 / 10 mg/L
37% of EPA limit
Copper410 / 1300 ug/L
32% of EPA limit
Radium1.3 / 5 pCi/L
26% of EPA limit
Uranium3.7 / 30 ug/L
12% of EPA limit
Gross Alpha Radiation2.6 / 15 pCi/L
17% of EPA limit
Total Trihalomethanes4.3 / 80 ug/L
5% of EPA limit
Haloacetic Acids (HAA5)2.3 / 60 ug/L
4% of EPA limit
Nickel0.0026 mg/L
UnregulatedInorganic
Fluoride0.811 / 4 mg/L
20% of EPA limit
Toluene0.47 / 1000 ug/L
0% of EPA limit
Barium0.068 / 2 mg/L
3% of EPA limit
PFHpA (Perfluoroheptanoic Acid)0.48 ng/L
UnregulatedPFAS
PFAS (5 compounds detected)
Microplastics (not routinely tested)

Water systems serving Hartford

HARTFORD WATERWORKS

15,805 servedGroundwater13 contaminants3 above guidelines
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Other cities in Washington County

Water quality reports for nearby Wisconsin communities.

AllentonColgateGermantownJacksonKewaskumSlingerWest Bend

Frequently asked questions

Is Hartford, WI tap water safe to drink?
Hartford 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. 13 contaminants have been detected in the water supply, including Lead, Nitrate, 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 Hartford water?
Monitoring has detected 13 contaminants in Hartford's water supply: Lead, Nitrate, Copper, Radium, Uranium, Gross Alpha Radiation, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Fluoride, Toluene, Barium, PFHpA (Perfluoroheptanoic Acid). Additionally, 5 PFAS compounds have been detected at trace levels. 3 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Hartford water have PFAS?
Yes. 5 PFAS compounds have been detected in Hartford'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 Hartford water hard?
Yes. Hartford water has a hardness of 450 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 Hartford get its drinking water?
Hartford'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. Hartford is served by one water system: HARTFORD WATERWORKS.

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