IL1050100 · Illinois

CHATSWORTH

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: 5

Counties listed by EPA · Livingston 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 271 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 7048814 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2026 · period end June 29, 2026 · first reported May 27, 2026 · EPA return-to-compliance field June 29, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
619120	January 27, 2026	Informal	State Violation/Reminder Notice
619121	January 27, 2026	Informal	State Public Notification requested
619122	June 29, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Unaddressed by formal action

Notification, Known or Potential LSLViolation 7048810 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start July 2, 2025 · first reported November 21, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
619112	July 3, 2025	Informal	State Violation/Reminder Notice
619113	July 3, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 7048811 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start July 1, 2025 · period end June 29, 2026 · first reported November 21, 2025 · EPA return-to-compliance field June 29, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
619114	July 29, 2025	Informal	State Violation/Reminder Notice
619115	July 29, 2025	Informal	State Public Notification requested
619122	June 29, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Archived

Monitoring and Reporting (DBP)Violation 7048813 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2025 · period end December 31, 2025 · first reported November 21, 2025 · EPA return-to-compliance field December 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
619118	October 14, 2025	Informal	State Violation/Reminder Notice
619119	October 14, 2025	Informal	State Public Notification requested

Monitoring or reporting · Archived

Monitoring and Reporting (DBP)Violation 7048812 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2025 · period end December 31, 2025 · first reported November 21, 2025 · EPA return-to-compliance field December 31, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
619116	October 14, 2025	Informal	State Violation/Reminder Notice
619117	October 14, 2025	Informal	State Public Notification requested

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