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Water Quality Report

Lake Forest, IL

19,817 residents · 3 water systems

0

Contaminants detected

0

PFAS compounds

—

Hardness (mg/L)

1

Above legal limits

0

Above health guidelines

Lake Forest drinking water comes from a mix of groundwater and surface water sources. Based on the most recent monitoring data, 0 contaminants have been detected in the water supply. PFAS testing has been conducted with no detections.

Limited monitoring data available

The water systems serving Lake Forest are small private systems (population served: 19,817) and are not part of Illinois EPA's main contaminant monitoring program. No detected contaminant data is available for these systems.

If you're researching the main municipal utility serving Lake Forest, search for your specific address below — the search returns the actual water system serving your residence, which may be different from what's listed here.

Water systems serving Lake Forest

LAKE FOREST

19,642 servedSurface water0 contaminants1 above legal limit
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OTTAWA ESTATES MHP (FORMERLY DATTIS MHP)

125 servedGroundwater0 contaminants
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ELM OAK MUTUAL WATER SYSTEM

50 servedGroundwater0 contaminants
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Frequently asked questions

Is Lake Forest, IL tap water safe to drink?
Lake Forest tap water has 1 contaminant currently measured above EPA legal standards (Maximum Contaminant Levels). 0 contaminants have been detected in the water supply, including . 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 Lake Forest water?
Monitoring has detected 0 contaminants in Lake Forest's water supply: . 1 of these are above EPA legal limits. See individual system reports for concentrations relative to EPA limits.
Does Lake Forest water have PFAS?
Lake Forest'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 Lake Forest get its drinking water?
Lake Forest's drinking water comes from a combination of groundwater and surface water sources. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Lake Forest is served by 3 water systems, the largest being LAKE FOREST (serving 19,642 people).

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