IL0317775 · Illinois
DES PLAINES MHP
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 1 resolved record with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 90 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, RegularViolation 5388830 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad RuleNoncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9883274 July 11, 2025 Informal State Violation/Reminder Notice 9883275 July 11, 2025 Informal State Public Notification requested 9883276 August 15, 2025 Resolving State Compliance achieved 9883277 June 19, 2026 Informal State Public Notification received Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 5388829 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start July 18, 2023 · first reported November 28, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9883272 August 22, 2023 Informal State Violation/Reminder Notice Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 5388828 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start February 9, 2023 · first reported May 16, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9883267 April 17, 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