IL1990200 · Illinois
COLP
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 6
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 2
Counties listed by EPA · Williamson 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 5 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 365 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Notification, Known or Potential LSLViolation 7177420 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start July 2, 2025 · period end April 15, 2026 · first reported November 21, 2025 · EPA return-to-compliance field April 15, 2026
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 824741 July 3, 2025 Informal State Violation/Reminder Notice 824742 July 3, 2025 Informal State Public Notification requested 824747 April 15, 2026 Resolving State Compliance achieved 824745 May 29, 2026 Informal State Public Notification received EPA health-based flag · Resolved
LSL InventoryViolation 7177419 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end April 15, 2026 · first reported August 18, 2025 · EPA return-to-compliance field April 15, 2026
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 824739 July 22, 2025 Informal State Violation/Reminder Notice 824740 July 22, 2025 Informal State Public Notification requested 824744 August 4, 2025 Informal State Public Notification received 824746 April 15, 2026 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 7177417 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start July 11, 2024 · period end June 1, 2023 · first reported November 21, 2024 · EPA return-to-compliance field June 1, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 824737 June 1, 2023 Resolving State Compliance achieved 824736 August 22, 2024 Informal State Violation/Reminder Notice Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 7177416 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2024 · period end July 1, 2025 · first reported November 21, 2024 · EPA return-to-compliance field July 1, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 824735 July 31, 2024 Informal State Violation/Reminder Notice 824743 July 1, 2025 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 7177415 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2023 · period end July 1, 2025 · first reported February 14, 2024 · EPA return-to-compliance field July 1, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 824734 December 18, 2023 Informal State Violation/Reminder Notice 824743 July 1, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7177414 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported August 29, 2023 · EPA return-to-compliance field June 30, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 824731 July 11, 2023 Informal State Violation/Reminder Notice 824732 July 11, 2023 Informal State Public Notification requested 824733 September 11, 2023 Resolving State Compliance achieved 824738 September 16, 2024 Informal State Public Notification received
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