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Water Quality Report

Frankfort, IL

Will County · 24,884 residents · 2 water systems

13

Contaminants detected

4

PFAS compounds

564

Hardness (mg/L)

0

Above legal limits

2

Above health guidelines

Frankfort drinking water comes from groundwater wells. Based on the most recent monitoring data, 13 contaminants have been detected in the water supply, including Lead, Arsenic, Copper, Radium, and 9 others. PFAS compounds have been detected at trace levels in Frankfort water. Water hardness is 564 mg/L (very hard), which can cause scale buildup in appliances and reduce soap effectiveness.

Contaminants detected in Frankfort water

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

Lead0.00098 / 0.015 mg/L
7% of EPA limit
Arsenic0.0023 / 0.01 mg/L
23% of EPA limit
Copper15.8 / 1300 ug/L
1% of EPA limit
Radium1.3 / 5 pCi/L
27% of EPA limit
Total Trihalomethanes51.8 / 80 ug/L
65% of EPA limit
18% of EPA limit
Nickel0.0019 mg/L
UnregulatedInorganic
Barium0.0747 / 2 mg/L
4% of EPA limit
Fluoride0.22 / 4 mg/L
6% of EPA limit
Di(2-ethylhexyl) adipate0.83 / 400 ug/L
0% of EPA limit
Chromium (total)0.0006 / 0.1 mg/L
1% of EPA limit
Phosphorus Total11 ug/L
Unregulated
Lithium62.6 ug/L
Unregulated
PFAS (4 compounds detected)
Microplastics (not routinely tested)

Other cities in Will County

Water quality reports for nearby Illinois communities.

Frequently asked questions

Is Frankfort, IL tap water safe to drink?
Frankfort tap water meets EPA legal standards (Maximum Contaminant Levels). However, 2 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, Arsenic, Copper, Radium, Total Trihalomethanes. 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 Frankfort water?
Monitoring has detected 13 contaminants in Frankfort's water supply: Lead, Arsenic, Copper, Radium, Total Trihalomethanes, Haloacetic Acids (HAA5), Nickel, Barium, Fluoride, Di(2-ethylhexyl) adipate, Chromium (total), Phosphorus Total, Lithium. Additionally, 4 PFAS compounds have been detected at trace levels. 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Frankfort water have PFAS?
Yes. 4 PFAS compounds have been detected in Frankfort'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 Frankfort water hard?
Yes. Frankfort water has a hardness of 564 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 Frankfort get its drinking water?
Frankfort's drinking water comes from groundwater wells that draw from underground aquifers. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Frankfort is served by 2 water systems, the largest being FRANKFORT (serving 24,000 people).

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