IL0312220 · Illinois
OAK LAWN
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 3
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 1
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 2 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 162.5 days. The interval uses the reporting periods and dates on file.
Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Inadequate ReportingViolation 3859405 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · first reported November 21, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6767216 September 6, 2025 Informal State Violation/Reminder Notice Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 3859404 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2023 · period end May 17, 2024 · first reported February 14, 2024 · EPA return-to-compliance field May 17, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6767214 December 19, 2023 Informal State Violation/Reminder Notice 6767215 May 17, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 3859403 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start December 30, 2022 · period end January 3, 2023 · first reported February 28, 2023 · EPA return-to-compliance field January 3, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 6767213 January 3, 2023 Resolving State Compliance achieved 6767211 January 24, 2023 Informal State Violation/Reminder Notice
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