IL1350300 · Illinois

HILLSBORO

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

Violation records shown: 7
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 7

Counties listed by EPA · Montgomery 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 · Archived
Monitoring, RegularViolation 7155233 · Nitrite · Nitrate Rule
Noncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 27, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 7155231 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start January 1, 2026 · period end June 16, 2026 · first reported May 27, 2026 · EPA return-to-compliance field June 16, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4821160	January 27, 2026	Informal	State Violation/Reminder Notice
4821161	January 27, 2026	Informal	State Public Notification requested
4821167	June 16, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 7155228 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start July 1, 2025 · period end June 16, 2026 · first reported November 21, 2025 · EPA return-to-compliance field June 16, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4821158	July 29, 2025	Informal	State Violation/Reminder Notice
4821159	July 29, 2025	Informal	State Public Notification requested
4821167	June 16, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Archived

Monitoring, RegularViolation 7155227 · Nitrite · Nitrate Rule

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4821156	July 16, 2025	Informal	State Violation/Reminder Notice
4821157	July 16, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7155226 · Nitrate · Nitrate Rule

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 18, 2025 · EPA return-to-compliance field June 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4821154	July 16, 2025	Informal	State Violation/Reminder Notice
4821155	July 16, 2025	Informal	State Public Notification requested
4821166	April 14, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 7155225 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2024 · period end September 30, 2024 · first reported November 21, 2024 · EPA return-to-compliance field September 30, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4821150	October 11, 2024	Informal	State Violation/Reminder Notice
4821151	October 11, 2024	Informal	State Public Notification requested
4821152	December 9, 2024	Resolving	State Compliance achieved
4821153	June 10, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 7155224 · Toxaphene · Synthetic Organic Chemicals

Noncompliance period start April 1, 2023 · period end June 30, 2023 · first reported August 29, 2023 · EPA return-to-compliance field June 30, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
4821146	July 11, 2023	Informal	State Violation/Reminder Notice
4821147	July 11, 2023	Informal	State Public Notification requested
4821148	June 10, 2024	Informal	State Public Notification received
4821149	June 19, 2024	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