IL1170200 · Illinois

CHESTERFIELD

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

Violation records shown: 3
EPA health-based flag: 3
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 0

Counties listed by EPA · Macoupin 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 3 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 30 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Resolved

Monthly Turbidity Exceed (Enhanced SWTR)Violation 7148133 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start December 1, 2025 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7205176	January 21, 2026	Informal	State Violation/Reminder Notice
7205177	January 21, 2026	Informal	State Public Notification requested
7205180	February 9, 2026	Informal	State Public Notification received
7205181	February 10, 2026	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Monthly Turbidity Exceed (Enhanced SWTR)Violation 7148132 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start November 1, 2025 · period end November 30, 2025 · first reported February 26, 2026 · EPA return-to-compliance field November 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7205174	December 29, 2025	Informal	State Violation/Reminder Notice
7205175	December 29, 2025	Informal	State Public Notification requested
7205179	January 27, 2026	Informal	State Public Notification received
7205181	February 10, 2026	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Monthly Turbidity Exceed (Enhanced SWTR)Violation 7148131 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start October 1, 2025 · period end October 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field October 31, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
7205172	December 29, 2025	Informal	State Violation/Reminder Notice
7205173	December 29, 2025	Informal	State Public Notification requested
7205178	January 27, 2026	Informal	State Public Notification received
7205181	February 10, 2026	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