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Water Quality Report

Oak Brook, IL

10,450 residents · 2 water systems

0

Contaminants detected

0

PFAS compounds

—

Hardness (mg/L)

0

Above legal limits

2

Above health guidelines

Oak Brook 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 Oak Brook are small private systems (population served: 10,450) 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 Oak Brook, 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 Oak Brook

OAK BROOK

9,400 servedSurface water0 contaminants1 above guideline
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SUBURBAN APARTMENTS (DE KALB UNIV DVL)

1,050 servedGroundwater0 contaminants1 above guideline
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Frequently asked questions

Is Oak Brook, IL tap water safe to drink?
Oak Brook 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. 0 contaminants have been detected in the water supply, including . 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 Oak Brook water?
Monitoring has detected 0 contaminants in Oak Brook's water supply: . 2 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Oak Brook water have PFAS?
Oak Brook'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 Oak Brook get its drinking water?
Oak Brook'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. Oak Brook is served by 2 water systems, the largest being OAK BROOK (serving 9,400 people).

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