IL1970500 · Illinois
LOCKPORT
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 40
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 40
Counties listed by EPA · Will 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 30 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7085658 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance 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 9867458 January 21, 2026 Informal State Violation/Reminder Notice 9867459 January 21, 2026 Informal State Public Notification requested 9867460 January 22, 2026 Resolving State Compliance achieved 9867461 January 22, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 7085657 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start December 1, 2025 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867456 January 21, 2026 Informal State Violation/Reminder Notice 9867457 January 21, 2026 Informal State Public Notification requested 9867461 January 22, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7085617 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance 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 9867441 December 30, 2025 Informal State Violation/Reminder Notice 9867442 December 30, 2025 Informal State Public Notification requested 9867460 January 22, 2026 Resolving State Compliance achieved 9867461 January 22, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 7085616 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 1, 2025 · period end November 30, 2025 · first reported February 26, 2026 · EPA return-to-compliance field November 30, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867439 December 30, 2025 Informal State Violation/Reminder Notice 9867440 December 30, 2025 Informal State Public Notification requested 9867461 January 22, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Notification, Known or Potential LSLViolation 7085614 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start July 2, 2025 · period end September 22, 2025 · first reported November 21, 2025 · EPA return-to-compliance field September 22, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867437 July 3, 2025 Informal State Violation/Reminder Notice 9867438 July 3, 2025 Informal State Public Notification requested 9867470 September 22, 2025 Resolving State Compliance achieved 9867443 December 30, 2025 Informal State Public Notification received Monitoring or reporting · Archived
Monitoring, RegularViolation 7085655 · Chlordane · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085654 · ETHYLENE DIBROMIDE · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085653 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085652 · Total Polychlorinated Biphenyls (PCB) · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085650 · Pentachlorophenol · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085649 · Benzo(a)pyrene · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085648 · HEXACHLOROBENZENE · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085647 · 2,4,5-TP · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085646 · 2,4-D · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085644 · Heptachlor epoxide · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085643 · Heptachlor · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085642 · LASSO · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085641 · Atrazine · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085640 · Aldicarb · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085639 · Carbofuran · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085638 · Aldicarb sulfone · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085637 · Aldicarb sulfoxide · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085636 · Hexachlorocyclopentadiene · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085635 · Dinoseb · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085634 · Picloram · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085633 · Di(2-ethylhexyl) phthalate · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085632 · Simazine · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085631 · OXAMYL · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085630 · Di(2-ethylhexyl) adipate · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085629 · Endothall · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085628 · Diquat · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085627 · Dalapon · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085626 · Toxaphene · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085625 · Methoxychlor · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085624 · BHC-GAMMA · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085623 · Endrin · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867452 January 16, 2026 Informal State Violation/Reminder Notice 9867453 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085622 · Diquat · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867450 January 16, 2026 Informal State Violation/Reminder Notice 9867451 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085621 · OXAMYL · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867448 January 16, 2026 Informal State Violation/Reminder Notice 9867449 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085620 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867446 January 16, 2026 Informal State Violation/Reminder Notice 9867447 January 16, 2026 Informal State Public Notification requested Monitoring or reporting · Archived
Monitoring, RegularViolation 7085619 · ETHYLENE DIBROMIDE · Synthetic Organic ChemicalsNoncompliance period start January 1, 2023 · period end December 31, 2025 · first reported February 26, 2026 · EPA return-to-compliance field December 31, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9867444 January 16, 2026 Informal State Violation/Reminder Notice 9867445 January 16, 2026 Informal State Public Notification requested
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.
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