IL0750700 · Illinois

ONARGA

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: 3

Counties listed by EPA · Iroquois 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 48 days. The interval uses the reporting periods and dates on file.

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 7034111 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start October 16, 2024 · period end December 3, 2024 · first reported February 27, 2025 · EPA return-to-compliance field December 3, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4151018	November 19, 2024	Informal	State Violation/Reminder Notice
4151021	December 3, 2024	Resolving	State Compliance achieved

Other or unclassified · Resolved

Public Notification Violation for NPDWR ViolationViolation 7034110 · Public Notice · Public Notice Rule and Revised PN Rule

Noncompliance period start October 16, 2024 · period end December 3, 2024 · first reported February 27, 2025 · EPA return-to-compliance field December 3, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4151017	November 19, 2024	Informal	State Violation/Reminder Notice
4151019	December 3, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 7034107 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start August 1, 2023 · period end August 31, 2023 · first reported November 28, 2023 · EPA return-to-compliance field August 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4151015	September 11, 2023	Resolving	State Compliance achieved
4151010	October 16, 2023	Informal	State Violation/Reminder Notice
4151011	October 16, 2023	Informal	State Public Notification requested
4151022	December 9, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 7034108 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2023 · period end September 25, 2023 · first reported November 28, 2023 · EPA return-to-compliance field September 25, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4151014	September 25, 2023	Resolving	State Compliance achieved
4151012	October 16, 2023	Informal	State Violation/Reminder Notice
4151013	October 16, 2023	Informal	State Public Notification requested
4151020	December 9, 2024	Informal	State Public Notification received

Monitoring or reporting · Resolved

Initial, Follow-up, or Routine Source Water M/RViolation 7034106 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start July 1, 2021 · period end February 15, 2022 · first reported February 9, 2022 · EPA return-to-compliance field February 15, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4151006	January 19, 2022	Informal	State Violation/Reminder Notice
4151007	January 19, 2022	Informal	State Public Notification requested
4151008	February 15, 2022	Resolving	State Compliance achieved
4151009	October 14, 2022	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