OK1010803 · Oklahoma

CHEYENNE

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

Violation records shown: 24
EPA health-based flag: 5
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 19

Counties listed by EPA · Roger Mills 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 24 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 90 days. The interval uses the reporting periods and dates on file.

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 279820 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start December 1, 2025 · period end December 31, 2025 · first reported May 13, 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
9004202	February 19, 2026	Informal	State Violation/Reminder Notice
9004203	February 19, 2026	Informal	State Public Notification requested
9004208	February 27, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279819 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start December 1, 2025 · period end December 31, 2025 · first reported May 13, 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
9004202	February 19, 2026	Informal	State Violation/Reminder Notice
9004203	February 19, 2026	Informal	State Public Notification requested
9004207	February 27, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279818 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start December 1, 2025 · period end December 31, 2025 · first reported May 13, 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
9004202	February 19, 2026	Informal	State Violation/Reminder Notice
9004203	February 19, 2026	Informal	State Public Notification requested
9004206	February 27, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279816 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start December 1, 2025 · period end December 31, 2025 · first reported May 13, 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
9004202	February 19, 2026	Informal	State Violation/Reminder Notice
9004203	February 19, 2026	Informal	State Public Notification requested
9004204	February 27, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 279813 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start November 1, 2025 · period end November 30, 2025 · first reported February 18, 2026 · EPA return-to-compliance field November 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004195	January 27, 2026	Informal	State Violation/Reminder Notice
9004196	January 27, 2026	Informal	State Public Notification requested
9004201	January 29, 2026	Resolving	State Compliance achieved
9004209	June 23, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279812 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start November 1, 2025 · period end November 30, 2025 · first reported February 18, 2026 · EPA return-to-compliance field November 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004195	January 27, 2026	Informal	State Violation/Reminder Notice
9004196	January 27, 2026	Informal	State Public Notification requested
9004200	January 29, 2026	Resolving	State Compliance achieved
9004209	June 23, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279811 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start November 1, 2025 · period end November 30, 2025 · first reported February 18, 2026 · EPA return-to-compliance field November 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004195	January 27, 2026	Informal	State Violation/Reminder Notice
9004196	January 27, 2026	Informal	State Public Notification requested
9004199	January 29, 2026	Resolving	State Compliance achieved
9004209	June 23, 2026	Informal	State Public Notification received

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279809 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start November 1, 2025 · period end November 30, 2025 · first reported February 18, 2026 · EPA return-to-compliance field November 30, 2025

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004195	January 27, 2026	Informal	State Violation/Reminder Notice
9004196	January 27, 2026	Informal	State Public Notification requested
9004197	January 29, 2026	Resolving	State Compliance achieved
9004209	June 23, 2026	Informal	State Public Notification received

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 279805 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts 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
9004189	November 12, 2025	Informal	State Public Notification requested
9004190	November 12, 2025	Formal	State Administrative/Compliance Order without penalty issued
9004194	January 20, 2026	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 279800 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start April 1, 2025 · period end June 30, 2025 · first reported August 13, 2025 · EPA return-to-compliance field June 30, 2025

3 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004182	August 7, 2025	Informal	State Public Notification requested
9004185	August 7, 2025	Formal	State Administrative/Compliance Order without penalty issued
9004193	January 20, 2026	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 279791 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

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

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004171	April 3, 2025	Informal	State Public Notification requested
9004172	April 3, 2025	Formal	State Administrative/Compliance Order without penalty issued
9004173	April 7, 2025	Informal	State Public Notification received
9004192	January 20, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Failure Submit IDSE/Subpart V Plan RptViolation 279788 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start December 30, 2024 · period end April 30, 2025 · first reported May 15, 2025 · EPA return-to-compliance field April 30, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004168	February 27, 2025	Informal	State Violation/Reminder Notice
9004174	April 30, 2025	Resolving	State Compliance achieved

Monitoring or reporting · Resolved
LSL ReportingViolation 279797 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · period end October 7, 2025 · first reported August 13, 2025 · EPA return-to-compliance field October 7, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9004181 July 11, 2025 Informal State Violation/Reminder Notice
9004187 October 7, 2025 Resolving State Compliance achieved
EPA health-based flag · Resolved
LSL InventoryViolation 279796 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule Revisions
Noncompliance period start October 17, 2024 · period end October 7, 2025 · first reported August 13, 2025 · EPA return-to-compliance field October 7, 2025

2 linked actions

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
9004180 July 11, 2025 Informal State Violation/Reminder Notice
9004186 October 7, 2025 Resolving State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004181	July 11, 2025	Informal	State Violation/Reminder Notice
9004187	October 7, 2025	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004180	July 11, 2025	Informal	State Violation/Reminder Notice
9004186	October 7, 2025	Resolving	State Compliance achieved

EPA health-based flag · Resolved

Maximum Contaminant Level Violation, AverageViolation 279786 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start October 1, 2024 · period end December 31, 2024 · first reported February 25, 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
9004165	January 7, 2025	Informal	State Public Notification requested
9004166	January 7, 2025	Formal	State Administrative/Compliance Order without penalty issued
9004167	January 23, 2025	Informal	State Public Notification received
9004191	January 20, 2026	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 279773 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start February 1, 2024 · period end February 29, 2024 · first reported June 14, 2024 · EPA return-to-compliance field February 29, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004154	April 18, 2024	Informal	State Violation/Reminder Notice
9004155	April 18, 2024	Informal	State Public Notification requested
9004156	April 26, 2024	Informal	State Public Notification received
9004162	May 30, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279772 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 14, 2024 · EPA return-to-compliance field March 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004152	April 18, 2024	Informal	State Violation/Reminder Notice
9004153	April 18, 2024	Informal	State Public Notification requested
9004156	April 26, 2024	Informal	State Public Notification received
9004161	May 30, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279771 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 14, 2024 · EPA return-to-compliance field March 31, 2024

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004150	April 18, 2024	Informal	State Violation/Reminder Notice
9004151	April 18, 2024	Informal	State Public Notification requested
9004156	April 26, 2024	Informal	State Public Notification received
9004160	May 30, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279769 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 14, 2024 · EPA return-to-compliance field March 31, 2024

6 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004144	April 18, 2024	Informal	State Violation/Reminder Notice
9004145	April 18, 2024	Informal	State Public Notification requested
9004146	April 18, 2024	Informal	State Violation/Reminder Notice
9004147	April 18, 2024	Informal	State Public Notification requested
9004156	April 26, 2024	Informal	State Public Notification received
9004163	May 30, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279751 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported January 2, 2024 · EPA return-to-compliance field September 30, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004132	September 22, 2023	Informal	State Violation/Reminder Notice
9004133	September 22, 2023	Informal	State Public Notification requested
9004136	September 26, 2023	Informal	State Public Notification received
9004143	February 20, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279750 · CARBON, TOTAL · Stage 1 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start July 1, 2023 · period end September 30, 2023 · first reported January 2, 2024 · EPA return-to-compliance field September 30, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004130	September 22, 2023	Informal	State Violation/Reminder Notice
9004131	September 22, 2023	Informal	State Public Notification requested
9004137	September 26, 2023	Informal	State Public Notification received
9004142	February 20, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279753 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start May 1, 2023 · period end July 31, 2023 · first reported January 2, 2024 · EPA return-to-compliance field July 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004134	September 22, 2023	Informal	State Violation/Reminder Notice
9004135	September 22, 2023	Informal	State Public Notification requested
9004139	September 26, 2023	Informal	State Public Notification received
9004140	February 20, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring and Reporting (DBP)Violation 279752 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts Rule

Noncompliance period start May 1, 2023 · period end July 31, 2023 · first reported January 2, 2024 · EPA return-to-compliance field July 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004134	September 22, 2023	Informal	State Violation/Reminder Notice
9004135	September 22, 2023	Informal	State Public Notification requested
9004139	September 26, 2023	Informal	State Public Notification received
9004140	February 20, 2024	Resolving	State Compliance achieved

Monitoring or reporting · Resolved

Monitoring, Routine (RTCR)Violation 279746 · Revised Total Coliform Rule · Revised Total Coliform Rule

Noncompliance period start May 1, 2023 · period end May 31, 2023 · first reported August 29, 2023 · EPA return-to-compliance field May 31, 2023

4 linked actions

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
9004125	July 21, 2023	Informal	State Violation/Reminder Notice
9004126	July 21, 2023	Informal	State Public Notification requested
9004127	July 24, 2023	Resolving	State Compliance achieved
9004138	September 26, 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