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Water Quality Report

Naperville, IL

156,406 residents · 1 water system

0

Contaminants detected

0

PFAS compounds

—

Hardness (mg/L)

0

Above legal limits

1

Above health guidelines

Naperville drinking water comes from surface water. 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 system serving Naperville is small a private system (population served: 156,406) and is not part of Illinois EPA's main contaminant monitoring program. No detected contaminant data is available for this system.

If you're researching the main municipal utility serving Naperville, 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 Naperville

NAPERVILLE

156,406 servedSurface water0 contaminants1 above guideline
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Frequently asked questions

Is Naperville, IL tap water safe to drink?
Naperville tap water meets EPA legal standards (Maximum Contaminant Levels). However, 1 contaminant is 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 Naperville water?
Monitoring has detected 0 contaminants in Naperville's water supply: . 1 exceed health guidelines. See individual system reports for concentrations relative to EPA limits.
Does Naperville water have PFAS?
Naperville'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 Naperville get its drinking water?
Naperville's drinking water comes from surface water sources. The water is treated and tested according to Illinois EPA and EPA requirements before distribution. Naperville is served by one water system: NAPERVILLE.

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