IL0312520 · Illinois

POSEN

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown: 5
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 4

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 17 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 5412820 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 27, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 5412819 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule
Noncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 27, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.

Monitoring or reporting · Resolved

Notification, Known or Potential LSLViolation 5412816 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start July 2, 2025 · period end July 2, 2025 · first reported November 21, 2025 · EPA return-to-compliance field July 2, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8356325	July 2, 2025	Resolving	State Compliance achieved
8356321	July 3, 2025	Informal	State Violation/Reminder Notice
8356322	July 3, 2025	Informal	State Public Notification requested
8356324	September 11, 2025	Informal	State Public Notification received

Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Inadequate ReportingViolation 5412818 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance 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
8356323 September 6, 2025 Informal State Violation/Reminder Notice

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8356323	September 6, 2025	Informal	State Violation/Reminder Notice

Monitoring or reporting · Resolved

Lead Consumer NoticeViolation 5412815 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start December 30, 2020 · period end February 2, 2021 · first reported March 11, 2021 · EPA return-to-compliance field February 2, 2021

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8356319	January 6, 2021	Informal	State Violation/Reminder Notice
8356320	February 2, 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