IL0316000 · Illinois
CHICAGO
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 10
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 9
Counties listed by EPA · Cook County, Illinois
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 9 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 91 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Notification, Known or Potential LSLViolation 7017605 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start July 2, 2025 · period end March 26, 2026 · first reported November 21, 2025 · EPA return-to-compliance field March 26, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4745369 July 3, 2025 Informal State Violation/Reminder Notice 4745370 July 3, 2025 Informal State Public Notification requested 4745381 March 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 7017604 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start May 1, 2025 · period end May 31, 2025 · first reported August 18, 2025 · EPA return-to-compliance field May 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4745367 July 1, 2025 Informal State Violation/Reminder Notice 4745368 July 1, 2025 Informal State Public Notification requested 4745372 July 9, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Turbidity (Enhanced SWTR)Violation 7017603 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start April 1, 2025 · period end April 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field April 30, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4745365 May 15, 2025 Informal State Violation/Reminder Notice 4745366 May 15, 2025 Informal State Public Notification requested 4745372 July 9, 2025 Resolving State Compliance achieved Monitoring or reporting · Archived
Monitoring, RegularViolation 7017608 · Dinoseb · Synthetic Organic ChemicalsNoncompliance period start January 1, 2025 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4745379 January 13, 2026 Informal State Violation/Reminder Notice 4745380 January 13, 2026 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7017600 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2024 · period end September 30, 2024 · first reported November 21, 2024 · EPA return-to-compliance field September 30, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4745358 October 15, 2024 Informal State Violation/Reminder Notice 4745359 October 15, 2024 Informal State Public Notification requested 4745364 November 8, 2024 Resolving State Compliance achieved 4745378 July 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7017599 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2024 · period end September 30, 2024 · first reported November 21, 2024 · EPA return-to-compliance field September 30, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4745356 October 15, 2024 Informal State Violation/Reminder Notice 4745357 October 15, 2024 Informal State Public Notification requested 4745364 November 8, 2024 Resolving State Compliance achieved 4745375 July 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7017598 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2024 · period end September 30, 2024 · first reported November 21, 2024 · EPA return-to-compliance field September 30, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4745354 October 15, 2024 Informal State Violation/Reminder Notice 4745355 October 15, 2024 Informal State Public Notification requested 4745364 November 8, 2024 Resolving State Compliance achieved 4745376 July 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7017597 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2024 · period end September 30, 2024 · first reported November 21, 2024 · EPA return-to-compliance field September 30, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4745352 October 15, 2024 Informal State Violation/Reminder Notice 4745353 October 15, 2024 Informal State Public Notification requested 4745364 November 8, 2024 Resolving State Compliance achieved 4745377 July 10, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 7017594 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start December 30, 2021 · period end February 1, 2022 · first reported February 9, 2022 · EPA return-to-compliance field February 1, 2022
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4745346 January 19, 2022 Informal State Violation/Reminder Notice 4745347 February 1, 2022 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 7017592 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2021 · period end August 5, 2021 · first reported December 1, 2021 · EPA return-to-compliance field August 5, 2021
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 4745342 July 22, 2021 Informal State Violation/Reminder Notice 4745343 August 5, 2021 Resolving State Compliance achieved
EPA data and scope
How to read the records
The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.
- We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
- EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
- Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
- We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.
EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility