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Water Quality Report

Lemont, IL

Cook County · 18,005 residents · 2 water systems

2

Contaminants detected

1

PFAS compounds

Hardness (mg/L)

1

Above legal limits

1

Above health guidelines

Lemont drinking water comes from groundwater wells. Based on the most recent monitoring data, 2 contaminants have been detected in the water supply, including Lead, Lithium. PFAS compounds have been detected at trace levels in Lemont water.

Contaminants detected in Lemont water

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

Lead0.02 / 0.015 mg/L
133% of EPA limit
Lithium53.8 ug/L
Unregulated
PFAS (1 compounds detected)
Microplastics (not routinely tested)

Other cities in Cook County

Water quality reports for nearby Illinois communities.

Frequently asked questions

Is Lemont, IL tap water safe to drink?
Lemont tap water has 1 contaminant currently measured above EPA legal standards (Maximum Contaminant Levels), and 1 above independent health guidelines. 2 contaminants have been detected in the water supply, including Lead, Lithium. View the detailed report for each water system to see specific levels, how they compare to both legal limits and health guidelines, and what actions to take.
What contaminants are in Lemont water?
Monitoring has detected 2 contaminants in Lemont's water supply: Lead, Lithium. Additionally, 1 PFAS compounds have been detected at trace levels. 1 of these are above EPA legal limits. 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Lemont water have PFAS?
Yes. 1 PFAS compounds have been detected in Lemont'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.
Where does Lemont get its drinking water?
Lemont'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. Lemont is served by 2 water systems, the largest being LEMONT (serving 17,500 people).

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