OK2005501 · Oklahoma

NICHOLS HILLS

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

Violation records shown: 69
EPA health-based flag: 1
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 67

Counties listed by EPA · Oklahoma County, Oklahoma

Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.

Violations and what followed

Among 69 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

Monitoring and Reporting (DBP)Violation 139701 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2025 · period end December 31, 2025 · first reported November 14, 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
9139478	October 15, 2025	Informal	State Violation/Reminder Notice
9139479	October 15, 2025	Informal	State Public Notification requested
9139483	June 5, 2026	Resolving	State Compliance achieved
9139484	June 30, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 139700 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2025 · period end December 31, 2025 · first reported November 14, 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
9139478	October 15, 2025	Informal	State Violation/Reminder Notice
9139479	October 15, 2025	Informal	State Public Notification requested
9139483	June 5, 2026	Resolving	State Compliance achieved
9139484	June 30, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved
LSL ReportingViolation 139698 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · period end July 15, 2025 · first reported August 13, 2025 · EPA return-to-compliance field July 15, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9139473 July 11, 2025 Informal State Violation/Reminder Notice
9139475 July 15, 2025 Resolving State Compliance achieved
EPA health-based flag · Resolved
LSL InventoryViolation 139697 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · period end July 15, 2025 · first reported August 13, 2025 · EPA return-to-compliance field July 15, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9139472 July 11, 2025 Informal State Violation/Reminder Notice
9139474 July 15, 2025 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139473	July 11, 2025	Informal	State Violation/Reminder Notice
9139475	July 15, 2025	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139472	July 11, 2025	Informal	State Violation/Reminder Notice
9139474	July 15, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139696 · Chlordane · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139695 · ETHYLENE DIBROMIDE · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139694 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139693 · Total Polychlorinated Biphenyls (PCB) · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139692 · Pentachlorophenol · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139691 · Benzo(a)pyrene · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139690 · HEXACHLOROBENZENE · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139689 · 2,4,5-TP · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139688 · 2,4-D · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139687 · Heptachlor epoxide · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139686 · Heptachlor · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139685 · LASSO · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139684 · Atrazine · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139683 · Carbofuran · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139682 · Hexachlorocyclopentadiene · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139681 · Dinoseb · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139680 · Picloram · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139679 · Di(2-ethylhexyl) phthalate · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139678 · Simazine · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139677 · OXAMYL · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139676 · Di(2-ethylhexyl) adipate · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139675 · Glyphosate · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139674 · Endothall · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139673 · Diquat · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139672 · Dalapon · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139671 · Toxaphene · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139670 · Methoxychlor · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139669 · BHC-GAMMA · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139668 · Endrin · Synthetic Organic Chemicals

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139481	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139667 · Nitrate-Nitrite · Nitrate Rule

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139469	April 10, 2025	Resolving	State Compliance achieved
9139470	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139666 · Nitrate-Nitrite · Nitrate Rule

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported May 15, 2025 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139467	March 6, 2025	Informal	State Violation/Reminder Notice
9139468	March 6, 2025	Informal	State Public Notification requested
9139470	June 30, 2025	Informal	State Public Notification received
9139477	September 17, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 139665 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported December 30, 2024 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139465	October 21, 2024	Informal	State Violation/Reminder Notice
9139466	October 21, 2024	Informal	State Public Notification requested
9139471	June 30, 2025	Informal	State Public Notification received
9139482	June 5, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 139664 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2024 · period end December 31, 2024 · first reported December 30, 2024 · EPA return-to-compliance field December 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139465	October 21, 2024	Informal	State Violation/Reminder Notice
9139466	October 21, 2024	Informal	State Public Notification requested
9139471	June 30, 2025	Informal	State Public Notification received
9139482	June 5, 2026	Resolving	State Compliance achieved

Other or unclassified · Resolved

Consumer Confidence Report Inadequate ReportingViolation 139633 · Consumer Confidence Rule · Consumer Confidence Rule

Noncompliance period start October 2, 2023 · period end April 30, 2024 · first reported February 14, 2024 · EPA return-to-compliance field April 30, 2024

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139460	January 18, 2024	Informal	State Violation/Reminder Notice
9139463	April 30, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139663 · Chlordane · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139662 · ETHYLENE DIBROMIDE · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139661 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139660 · Total Polychlorinated Biphenyls (PCB) · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139659 · Pentachlorophenol · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139658 · Benzo(a)pyrene · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139657 · HEXACHLOROBENZENE · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139656 · 2,4,5-TP · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139655 · 2,4-D · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139654 · Heptachlor epoxide · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139653 · Heptachlor · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139652 · LASSO · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139651 · Atrazine · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139650 · Carbofuran · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139649 · Hexachlorocyclopentadiene · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139648 · Dinoseb · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139647 · Picloram · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139646 · Di(2-ethylhexyl) phthalate · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139645 · Simazine · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139644 · OXAMYL · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139643 · Di(2-ethylhexyl) adipate · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139642 · Glyphosate · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139641 · Endothall · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139640 · Diquat · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139639 · Dalapon · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139638 · Toxaphene · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139637 · Methoxychlor · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139636 · BHC-GAMMA · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139635 · Endrin · Synthetic Organic Chemicals

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139480	November 4, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 139634 · Nitrate-Nitrite · Nitrate Rule

Noncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 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
9139461	February 28, 2024	Informal	State Violation/Reminder Notice
9139462	February 28, 2024	Informal	State Public Notification requested
9139464	May 13, 2024	Informal	State Public Notification received
9139476	September 17, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Follow-up Or Routine LCR Tap M/RViolation 139601 · Lead and Copper Rule · Lead and Copper Rule

Noncompliance period start October 1, 2021 · period end July 19, 2022 · first reported February 17, 2022 · EPA return-to-compliance field July 19, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9139455	November 18, 2021	Informal	State Violation/Reminder Notice
9139456	November 18, 2021	Informal	State Public Notification requested
9139457	July 19, 2022	Resolving	State Compliance achieved
9139459	April 4, 2023	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