OK2000904 · Oklahoma

CALUMET PWA

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

Violation records shown: 67
EPA health-based flag: 4
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 63

Counties listed by EPA · Canadian 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 64 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 91 days. The interval uses the reporting periods and dates on file.

EPA health-based flag · Archived

Maximum Contaminant Level Violation, Single SampleViolation 141983 · Nitrate-Nitrite · Nitrate Rule

Noncompliance period start April 1, 2026 · period end June 30, 2026 · first reported August 11, 2026 · EPA return-to-compliance field June 30, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101570	May 26, 2026	Informal	State Public Notification received
9101568	May 28, 2026	Formal	State Administrative/Compliance Order without penalty issued
9101569	May 28, 2026	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, Single SampleViolation 141978 · Nitrate-Nitrite · Nitrate Rule

Noncompliance period start October 1, 2025 · period end December 31, 2025 · first reported February 18, 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
9101561	November 25, 2025	Informal	State Public Notification received
9101559	November 26, 2025	Formal	State Administrative/Compliance Order without penalty issued
9101560	November 26, 2025	Informal	State Public Notification requested

EPA health-based flag · Archived

Maximum Contaminant Level Violation, Single SampleViolation 141977 · Nitrate-Nitrite · Nitrate Rule

Noncompliance period start July 1, 2025 · period end September 30, 2025 · first reported November 14, 2025 · EPA return-to-compliance field September 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101558	July 11, 2025	Informal	State Public Notification received
9101556	July 16, 2025	Formal	State Administrative/Compliance Order without penalty issued
9101557	July 16, 2025	Informal	State Public Notification requested

Monitoring or reporting · Resolved

LSL ReportingViolation 141976 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start October 17, 2024 · period end April 13, 2026 · first reported August 13, 2025 · EPA return-to-compliance field April 13, 2026

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101555	July 11, 2025	Informal	State Violation/Reminder Notice
9999900000000000001	March 19, 2026	Formal	Federal Final Administrative Order issued
9101565	April 13, 2026	Resolving	State Compliance achieved

EPA health-based flag · Resolved

LSL InventoryViolation 141975 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start October 17, 2024 · period end April 13, 2026 · first reported August 13, 2025 · EPA return-to-compliance field April 13, 2026

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101554	July 11, 2025	Informal	State Violation/Reminder Notice
9101571	July 11, 2025	Informal	State Public Notification requested
9999900000000000001	March 19, 2026	Formal	Federal Final Administrative Order issued
9101564	April 13, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141974 · Chlordane · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141973 · ETHYLENE DIBROMIDE · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141972 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141971 · Total Polychlorinated Biphenyls (PCB) · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141970 · Pentachlorophenol · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141969 · Benzo(a)pyrene · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141968 · HEXACHLOROBENZENE · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141967 · 2,4,5-TP · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141966 · 2,4-D · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141965 · Heptachlor epoxide · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141964 · Heptachlor · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141963 · LASSO · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141962 · Atrazine · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141961 · Carbofuran · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141960 · Hexachlorocyclopentadiene · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141959 · Dinoseb · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141958 · Picloram · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141957 · Di(2-ethylhexyl) phthalate · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141956 · Simazine · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141955 · OXAMYL · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141954 · Di(2-ethylhexyl) adipate · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141953 · Glyphosate · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141952 · Endothall · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141951 · Diquat · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141950 · Dalapon · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141949 · Toxaphene · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141948 · Methoxychlor · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141947 · BHC-GAMMA · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141946 · Endrin · Synthetic Organic Chemicals

Noncompliance period start October 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
9101548	March 6, 2025	Informal	State Violation/Reminder Notice
9101549	March 6, 2025	Informal	State Public Notification requested
9101551	April 10, 2025	Resolving	State Compliance achieved
9101552	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141945 · Chlordane · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141944 · ETHYLENE DIBROMIDE · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141943 · 1,2-DIBROMO-3-CHLOROPROPANE · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141942 · Total Polychlorinated Biphenyls (PCB) · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141941 · Pentachlorophenol · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141940 · Benzo(a)pyrene · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141939 · HEXACHLOROBENZENE · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141938 · 2,4,5-TP · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141937 · 2,4-D · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141936 · Heptachlor epoxide · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141935 · Heptachlor · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141934 · LASSO · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141933 · Atrazine · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141932 · Carbofuran · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141931 · Hexachlorocyclopentadiene · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141930 · Dinoseb · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141929 · Picloram · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141928 · Di(2-ethylhexyl) phthalate · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141927 · Simazine · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141926 · OXAMYL · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141925 · Di(2-ethylhexyl) adipate · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141924 · Glyphosate · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141923 · Endothall · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141922 · Diquat · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141921 · Dalapon · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141920 · Toxaphene · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141919 · Methoxychlor · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141918 · BHC-GAMMA · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141917 · Endrin · Synthetic Organic Chemicals

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9101546	November 22, 2024	Informal	State Violation/Reminder Notice
9101547	November 22, 2024	Informal	State Public Notification requested
9101550	April 10, 2025	Resolving	State Compliance achieved
9101553	June 30, 2025	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141982 · Gross Beta Particle Activity · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported May 13, 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
9101562	February 19, 2026	Informal	State Violation/Reminder Notice
9101563	February 19, 2026	Informal	State Public Notification requested
9101566	May 4, 2026	Resolving	State Compliance achieved
9101567	May 8, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141981 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported May 13, 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
9101562	February 19, 2026	Informal	State Violation/Reminder Notice
9101563	February 19, 2026	Informal	State Public Notification requested
9101566	May 4, 2026	Resolving	State Compliance achieved
9101567	May 8, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141980 · Combined Uranium · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported May 13, 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
9101562	February 19, 2026	Informal	State Violation/Reminder Notice
9101563	February 19, 2026	Informal	State Public Notification requested
9101566	May 4, 2026	Resolving	State Compliance achieved
9101567	May 8, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, RegularViolation 141979 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule

Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported May 13, 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
9101562	February 19, 2026	Informal	State Violation/Reminder Notice
9101563	February 19, 2026	Informal	State Public Notification requested
9101566	May 4, 2026	Resolving	State Compliance achieved
9101567	May 8, 2026	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