IL0971250 · Illinois
NORTH CHICAGO
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 8
- EPA health-based flag
- 2
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 4
Counties listed by EPA · Lake 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 90 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Archived
Monitoring, RegularViolation 7045925 · Diquat · Synthetic Organic ChemicalsNoncompliance 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 · Archived
Monitoring, RegularViolation 7045924 · Endothall · Synthetic Organic ChemicalsNoncompliance 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.Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Inadequate ReportingViolation 7045920 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · first reported November 21, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3933 September 22, 2025 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 7045919 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2025 · period end December 10, 2025 · first reported November 21, 2025 · EPA return-to-compliance field December 10, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3930 July 29, 2025 Informal State Violation/Reminder Notice 3931 July 29, 2025 Informal State Public Notification requested 3932 August 18, 2025 Informal State Public Notification received 3934 December 10, 2025 Resolving State Compliance achieved Other or unclassified · Resolved
Public Notification Violation for NPDWR ViolationViolation 7045918 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start June 20, 2024 · period end June 20, 2024 · first reported August 29, 2024 · EPA return-to-compliance field June 20, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3925 June 20, 2024 Resolving State Compliance achieved 3926 July 17, 2024 Informal State Violation/Reminder Notice EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 7045917 · Di(2-ethylhexyl) phthalate · Synthetic Organic ChemicalsNoncompliance period start April 1, 2024 · period end June 30, 2024 · first reported August 29, 2024 · EPA return-to-compliance field June 30, 2024
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3922 May 20, 2024 Informal State Violation/Reminder Notice 3923 May 20, 2024 Informal State Public Notification requested 3928 May 30, 2024 Informal State Formal Notice of Violation issued 3924 July 1, 2024 Informal State Public Notification received 3929 April 23, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 7045916 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2023 · period end February 28, 2024 · first reported February 14, 2024 · EPA return-to-compliance field February 28, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3916 October 11, 2023 Informal State Violation/Reminder Notice 3917 October 11, 2023 Informal State Public Notification requested 3920 February 28, 2024 Resolving State Compliance achieved 3927 October 11, 2024 Informal State Public Notification received EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 7045915 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported August 29, 2023 · EPA return-to-compliance field June 30, 2023
7 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 3911 May 4, 2023 Informal State Violation/Reminder Notice 3912 May 4, 2023 Informal State Public Notification requested 3914 June 13, 2023 Informal State Formal Notice of Violation issued 3915 June 13, 2023 Informal State Public Notification received 3919 July 28, 2023 Resolving State Compliance achieved 3918 October 26, 2023 Informal State Bilateral Compliance Agreement signed 3921 October 26, 2023 Formal State Administrative/Compliance Order without penalty issued
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