IL0990550 · Illinois

MENDOTA

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

Violation records shown: 5
EPA health-based flag: 2
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 2

Counties listed by EPA · LaSalle 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 91 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Notification, Known or Potential LSLViolation 7143834 · 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

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1013871	July 2, 2025	Resolving	State Compliance achieved
1013864	July 3, 2025	Informal	State Violation/Reminder Notice
1013865	July 3, 2025	Informal	State Public Notification requested

Other or unclassified · Resolved

Consumer Confidence Report Inadequate ReportingViolation 7143836 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start July 1, 2025 · period end October 15, 2025 · first reported November 21, 2025 · EPA return-to-compliance field October 15, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1013868	August 25, 2025	Informal	State Violation/Reminder Notice
1013870	October 15, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 7143835 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start July 1, 2025 · period end December 30, 2025 · first reported November 21, 2025 · EPA return-to-compliance field December 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1013866	July 29, 2025	Informal	State Violation/Reminder Notice
1013867	July 29, 2025	Informal	State Public Notification requested
1013872	December 30, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 7143821 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2021 · period end March 31, 2021 · first reported June 1, 2021 · EPA return-to-compliance field March 31, 2021

6 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1013830	December 4, 2020	Informal	State Formal Notice of Violation issued
1013839	March 19, 2021	Informal	State Bilateral Compliance Agreement signed
1013837	April 6, 2021	Informal	State Violation/Reminder Notice
1013838	April 6, 2021	Informal	State Public Notification requested
1013841	June 29, 2021	Resolving	State Compliance achieved
1013842	July 12, 2021	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 7143818 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2020 · period end December 31, 2020 · first reported March 11, 2021 · EPA return-to-compliance field December 31, 2020

6 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
1013830	December 4, 2020	Informal	State Formal Notice of Violation issued
1013831	January 7, 2021	Informal	State Violation/Reminder Notice
1013832	January 7, 2021	Informal	State Public Notification requested
1013839	March 19, 2021	Informal	State Bilateral Compliance Agreement signed
1013840	April 9, 2021	Informal	State Public Notification received
1013841	June 29, 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