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PUBLIC WATER SYSTEM REPORT
Is AQUA ILLINOIS-OAK BROOK Water Safe to Drink in 2026?
Illinois · PWSID IL0430055 · Surface water
Population served
5,361
Cities served
OAK BROOK
State / jurisdiction
Illinois (IL)
PWSID
IL0430055
A-
TAP WATER GRADE
Good
Model score 82/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
1 violation record(s) in the latest EPA SDWA quarterly snapshot
CONTAMINANTS — EPA UCMR5 MONITORING
No UCMR5 PFAS detects on file for this PWS in our bundled national dataset — the system may be smaller than UCMR5 thresholds, had non-detects, or results are not yet linked to this ID. Your retailer Annual Water Quality Report lists other regulated contaminants (chlorine, DBPs, nitrates, etc.).
Official Consumer Confidence Report (CCR)
📋 The official 2026 CCR for AQUA ILLINOIS-OAK BROOK has not yet been published on WaterCheckup.
Are you the water operator for AQUA ILLINOIS-OAK BROOK? Publish your official CCR here for free — your customers are already finding this page.
Residents: Your public water system is required by EPA to publish an annual CCR by July 1st each year. Contact AQUA ILLINOIS-OAK BROOKdirectly to request a copy, or check the EPA's national CCR portal at cfpub.epa.gov/ccr.
VIOLATIONS HISTORY (FEDERAL SNAPSHOT)
EPA’s national SDWA quarterly files associate 1 violation-related record with this system in the same reporting quarter as the public water system snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.
WHY THIS FOR AQUA ILLINOIS-OAK BROOK · Chosen for AQUA ILLINOIS-OAK BROOK because EPA’s SDWA snapshot shows active violation records. RO addresses a wide range of regulated contaminants, not just chlorine taste.
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