OK2000902 · Oklahoma

EL RENO

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

Violation records shown: 13
EPA health-based flag: 11
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 2

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 12 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 30 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

LSL ReportingViolation 224044 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start October 17, 2024 · period end September 30, 2025 · first reported August 13, 2025 · EPA return-to-compliance field September 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9110494	July 11, 2025	Informal	State Violation/Reminder Notice
9110497	September 30, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

LSL InventoryViolation 224043 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions

Noncompliance period start October 17, 2024 · period end September 30, 2025 · first reported August 13, 2025 · EPA return-to-compliance field September 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9110493	July 11, 2025	Informal	State Violation/Reminder Notice
9110496	September 30, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 224033 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

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
9110489	October 9, 2024	Informal	State Public Notification requested
9110490	October 9, 2024	Formal	State Administrative/Compliance Order without penalty issued
9110491	November 15, 2024	Informal	State Public Notification received
9110495	September 3, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Monthly Turbidity Exceed (Enhanced SWTR)Violation 224013 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start December 1, 2022 · period end December 31, 2022 · first reported March 27, 2023 · EPA return-to-compliance field December 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9110475	March 3, 2023	Formal	State Administrative/Compliance Order without penalty issued
9110476	March 3, 2023	Informal	State Public Notification requested
9110482	March 20, 2023	Resolving	State Compliance achieved
9110487	March 24, 2023	Informal	State Public Notification received

EPA health-based flag · Resolved

Treatment Technique (SWTR and GWR)Violation 224009 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start October 1, 2022 · period end October 31, 2022 · first reported March 27, 2023 · EPA return-to-compliance field October 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9110471	February 14, 2023	Formal	State Administrative/Compliance Order without penalty issued
9110472	February 14, 2023	Informal	State Public Notification requested
9110481	March 20, 2023	Resolving	State Compliance achieved
9110488	March 24, 2023	Informal	State Public Notification received

EPA health-based flag · Resolved

Single Turbidity Exceed (Enhanced SWTR)Violation 224008 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start October 1, 2022 · period end October 31, 2022 · first reported March 27, 2023 · EPA return-to-compliance field October 31, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9110471	February 14, 2023	Formal	State Administrative/Compliance Order without penalty issued
9110472	February 14, 2023	Informal	State Public Notification requested
9110481	March 20, 2023	Resolving	State Compliance achieved
9110488	March 24, 2023	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring, Turbidity (Enhanced SWTR)Violation 224005 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start February 1, 2022 · period end February 28, 2022 · first reported May 19, 2022 · EPA return-to-compliance field February 28, 2022

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9110465	April 20, 2022	Informal	State Violation/Reminder Notice
9110466	April 20, 2022	Informal	State Public Notification requested
9110484	April 4, 2023	Informal	State Public Notification received
9110485	April 6, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Treatment Technique (SWTR and GWR)Violation 224002 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start May 1, 2021 · period end May 31, 2021 · first reported February 17, 2022 · EPA return-to-compliance field May 31, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9110463	January 12, 2022	Formal	State Administrative/Compliance Order without penalty issued
9110464	January 12, 2022	Informal	State Public Notification requested
9110469	March 15, 2022	Informal	State Public Notification received
9110479	March 20, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Single Turbidity Exceed (Enhanced SWTR)Violation 224001 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start May 1, 2021 · period end May 31, 2021 · first reported February 17, 2022 · EPA return-to-compliance field May 31, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9110463	January 12, 2022	Formal	State Administrative/Compliance Order without penalty issued
9110464	January 12, 2022	Informal	State Public Notification requested
9110469	March 15, 2022	Informal	State Public Notification received
9110479	March 20, 2023	Resolving	State Compliance achieved

EPA health-based flag · Archived

Treatment Technique (SWTR and GWR)Violation 223993 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start February 1, 2021 · period end February 28, 2021 · first reported June 24, 2021 · EPA return-to-compliance field February 28, 2021

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9110460	April 2, 2021	Formal	State Administrative/Compliance Order without penalty issued
9110461	April 2, 2021	Informal	State Public Notification requested
9110468	August 4, 2022	Informal	State Public Notification received

EPA health-based flag · Resolved

Single Turbidity Exceed (Enhanced SWTR)Violation 223992 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start February 1, 2021 · period end February 28, 2021 · first reported June 24, 2021 · EPA return-to-compliance field February 28, 2021

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9110460	April 2, 2021	Formal	State Administrative/Compliance Order without penalty issued
9110461	April 2, 2021	Informal	State Public Notification requested
9110468	August 4, 2022	Informal	State Public Notification received
9110478	March 20, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Single Turbidity Exceed (Enhanced SWTR)Violation 223996 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment Rule

Noncompliance period start October 1, 2020 · period end October 31, 2020 · first reported September 8, 2021 · EPA return-to-compliance field October 31, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9110458	January 21, 2021	Formal	State Administrative/Compliance Order without penalty issued
9110459	January 21, 2021	Informal	State Public Notification requested
9110467	August 4, 2022	Informal	State Public Notification received
9110477	March 20, 2023	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Treatment Technique (SWTR and GWR)Violation 223987 · Surface Water Treatment Rule · Surface Water Treatment Rule

Noncompliance period start October 1, 2020 · period end October 31, 2020 · first reported March 1, 2021 · EPA return-to-compliance field October 31, 2020

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9110458	January 21, 2021	Formal	State Administrative/Compliance Order without penalty issued
9110459	January 21, 2021	Informal	State Public Notification requested
9110467	August 4, 2022	Informal	State Public Notification received
9110477	March 20, 2023	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