IL1110600 · Illinois
MCHENRY
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 23
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 23
Counties listed by EPA · McHenry 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 23 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 364 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 7051341 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2025 · period end December 31, 2025 · first reported November 21, 2025 · 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 7200610 July 29, 2025 Informal State Violation/Reminder Notice 7200611 July 29, 2025 Informal State Public Notification requested 7200612 December 31, 2025 Resolving State Compliance achieved 7200613 May 19, 2026 Informal State Public Notification received Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 7051319 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2023 · period end February 29, 2024 · first reported February 14, 2024 · EPA return-to-compliance field February 29, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200599 October 11, 2023 Informal State Violation/Reminder Notice 7200600 October 11, 2023 Informal State Public Notification requested 7200601 November 6, 2023 Informal State Public Notification received 7200606 February 29, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051340 · Styrene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051339 · Ethylbenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051338 · Toluene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051337 · Benzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051336 · CHLOROBENZENE · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051335 · Tetrachloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051334 · 1,1,2-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051333 · Trichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051332 · 1,2-Dichloropropane · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051331 · Carbon tetrachloride · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051330 · 1,1,1-Trichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051329 · 1,2-Dichloroethane · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051328 · trans-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051327 · 1,1-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051326 · p-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051325 · o-Dichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051324 · DICHLOROMETHANE · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051323 · Xylenes, Total · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051322 · cis-1,2-Dichloroethylene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051321 · 1,2,4-Trichlorobenzene · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200604 January 11, 2024 Informal State Violation/Reminder Notice 7200605 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200607 June 17, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 7051320 · Vinyl chloride · Volatile Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 7200602 January 11, 2024 Informal State Violation/Reminder Notice 7200603 January 11, 2024 Informal State Public Notification requested 7200609 April 24, 2024 Resolving State Compliance achieved 7200608 June 17, 2024 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