IL0974340 · Illinois
DEERFIELD
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 6
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 3
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 158 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 7139320 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2026 · period end June 8, 2026 · first reported May 27, 2026 · EPA return-to-compliance field June 8, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1738 January 27, 2026 Informal State Violation/Reminder Notice 1739 January 27, 2026 Informal State Public Notification requested 1740 June 8, 2026 Resolving State Compliance achieved Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Inadequate ReportingViolation 7139319 · 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 1736 August 25, 2025 Informal State Violation/Reminder Notice Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7139316 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end March 31, 2025 · first reported May 14, 2025 · EPA return-to-compliance field March 31, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1729 April 13, 2025 Informal State Violation/Reminder Notice 1730 April 13, 2025 Informal State Public Notification requested 1735 May 8, 2025 Resolving State Compliance achieved 1737 September 2, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 7139315 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end March 31, 2025 · first reported May 14, 2025 · EPA return-to-compliance field March 31, 2025
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1729 April 13, 2025 Informal State Violation/Reminder Notice 1730 April 13, 2025 Informal State Public Notification requested 1735 May 8, 2025 Resolving State Compliance achieved 1737 September 2, 2025 Informal State Public Notification received Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 7139314 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 10, 2023 · period end July 1, 2024 · first reported February 14, 2024 · EPA return-to-compliance field July 1, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1727 December 27, 2023 Informal State Violation/Reminder Notice 1728 July 1, 2024 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 7139313 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2022 · period end July 1, 2024 · first reported November 10, 2022 · EPA return-to-compliance field July 1, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1726 July 27, 2022 Informal State Violation/Reminder Notice 1728 July 1, 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