CLARENDON HILLS, IL · DuPage County
CLARENDON HILLS Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Illinois’s official records. Always confirm current status with Illinois before making decisions based on this information.
System facts
- System ID (PWSID)
- IL0430250
- System type
- Community Water System
- Population served
- 8,702
- Service connections
- 2,742
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
Violation history
Monitoring, Regular
—Combined Radium (-226 and -228)
January 1, 2023 – December 31, 2025
ArchivedLead Consumer Notice
—Lead and Copper Rule
December 30, 2020 – January 14, 2021
ResolvedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
July 1, 2017 – July 2, 2018
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2023 – December 31, 2025 | Monitoring, Regular | Combined Radium (-226 and -228) | — | Archived |
| December 30, 2020 – January 14, 2021 | Lead Consumer Notice | Lead and Copper Rule | — | Resolved |
| July 1, 2017 – July 2, 2018 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Resolved |
| June 30, 1977 – June 29, 1981 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state
Enforcement actions
- January 14, 2021State Compliance achieved1 linked violation
- January 6, 2021State Violation/Reminder Notice1 linked violation
- July 2, 2018State Compliance achieved1 linked violation
- August 25, 2017State Violation/Reminder Notice1 linked violation
- November 27, 1996State Public Notification received1 linked violation
- October 26, 1996State Public Notification requested1 linked violation
- October 26, 1996State Violation/Reminder Notice1 linked violation
- October 31, 1992State Violation/Reminder Notice1 linked violation
- October 31, 1992State Public Notification requested1 linked violation
- October 8, 1989State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
Contact
MCLAUGHLIN, BRENDAN
630-286-4750
CLARENDON HILLS, IL 60514