OK1010821 · Oklahoma
CHICKASHA MUNICIPAL AUTHORITY
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 18
- EPA health-based flag
- 13
- Health-based records unresolved in this snapshot
- 1
- Monitoring and reporting records
- 4
Counties listed by EPA · Grady 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 11 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.
EPA health-based flag · Addressed by formal action
LSL InventoryViolation 281163 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · first reported August 13, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211351 July 11, 2025 Informal State Violation/Reminder Notice 9211356 July 11, 2025 Informal State Public Notification requested 9999900000000000001 March 12, 2026 Formal Federal Final Administrative Order issued Monitoring or reporting · Archived
Monitoring, Turbidity (Enhanced SWTR)Violation 281175 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start April 1, 2026 · period end April 30, 2026 · first reported August 11, 2026 · EPA return-to-compliance field April 30, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211353 June 15, 2026 Informal State Violation/Reminder Notice 9211354 June 15, 2026 Informal State Public Notification requested Monitoring or reporting · Addressed by formal action
LSL ReportingViolation 281164 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · first reported August 13, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211352 July 11, 2025 Informal State Violation/Reminder Notice 9999900000000000001 March 12, 2026 Formal Federal Final Administrative Order issued Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 281147 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start March 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 9211345 May 15, 2024 Informal State Violation/Reminder Notice 9211346 May 15, 2024 Informal State Public Notification requested 9211348 May 31, 2024 Resolving State Compliance achieved 9211350 May 29, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 281146 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance 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 9211343 May 15, 2024 Informal State Violation/Reminder Notice 9211344 May 15, 2024 Informal State Public Notification requested 9211347 May 31, 2024 Resolving State Compliance achieved 9211349 May 29, 2025 Informal State Public Notification received Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 281140 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 2, 2023 · period end February 16, 2024 · first reported February 14, 2024 · EPA return-to-compliance field February 16, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211338 January 18, 2024 Informal State Violation/Reminder Notice 9211341 February 16, 2024 Resolving State Compliance achieved EPA health-based flag · Archived
Single Turbidity Exceed (Enhanced SWTR)Violation 281142 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start September 1, 2023 · period end September 30, 2023 · first reported June 14, 2024 · EPA return-to-compliance field September 30, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211329 February 10, 2026 Formal State Administrative/Compliance Order with penalty issued EPA health-based flag · Archived
Monthly Turbidity Exceed (Enhanced SWTR)Violation 281141 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start September 1, 2023 · period end September 30, 2023 · first reported February 14, 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 9211339 February 8, 2024 Formal State Administrative/Compliance Order without penalty issued 9211340 February 8, 2024 Informal State Public Notification requested 9211342 February 21, 2024 Informal State Public Notification received 9211329 February 10, 2026 Formal State Administrative/Compliance Order with penalty issued EPA health-based flag · Archived
Single Turbidity Exceed (Enhanced SWTR)Violation 281143 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start August 1, 2023 · period end August 31, 2023 · first reported June 14, 2024 · EPA return-to-compliance field August 31, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211334 October 5, 2023 Formal State Administrative/Compliance Order without penalty issued 9211329 February 10, 2026 Formal State Administrative/Compliance Order with penalty issued EPA health-based flag · Archived
Monthly Turbidity Exceed (Enhanced SWTR)Violation 281135 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start August 1, 2023 · period end August 31, 2023 · first reported January 2, 2024 · EPA return-to-compliance field August 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211334 October 5, 2023 Formal State Administrative/Compliance Order without penalty issued 9211335 October 5, 2023 Informal State Public Notification requested 9211336 December 1, 2023 Informal State Public Notification received 9211329 February 10, 2026 Formal State Administrative/Compliance Order with penalty issued EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 281123 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start August 1, 2022 · period end August 31, 2022 · first reported March 27, 2023 · EPA return-to-compliance field August 31, 2022
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211331 January 3, 2023 Formal State Administrative/Compliance Order without penalty issued 9211332 January 3, 2023 Informal State Public Notification requested 9211333 March 15, 2023 Resolving State Compliance achieved EPA health-based flag · Resolved
Treatment Technique (SWTR and GWR)Violation 281111 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start September 1, 2021 · period end September 30, 2021 · first reported February 17, 2022 · EPA return-to-compliance field September 30, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211327 January 11, 2022 Formal State Administrative/Compliance Order without penalty issued 9211328 January 11, 2022 Informal State Public Notification requested 9211330 July 14, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Single Turbidity Exceed (Enhanced SWTR)Violation 281105 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start September 1, 2021 · period end September 30, 2021 · first reported February 17, 2022 · EPA return-to-compliance field September 30, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211327 January 11, 2022 Formal State Administrative/Compliance Order without penalty issued 9211328 January 11, 2022 Informal State Public Notification requested 9211330 July 14, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 281104 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start September 1, 2021 · period end September 30, 2021 · first reported February 17, 2022 · EPA return-to-compliance field September 30, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211327 January 11, 2022 Formal State Administrative/Compliance Order without penalty issued 9211328 January 11, 2022 Informal State Public Notification requested 9211330 July 14, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 281108 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start August 1, 2021 · period end August 31, 2021 · first reported February 17, 2022 · EPA return-to-compliance field August 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211327 January 11, 2022 Formal State Administrative/Compliance Order without penalty issued 9211328 January 11, 2022 Informal State Public Notification requested 9211330 July 14, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Single Turbidity Exceed (Enhanced SWTR)Violation 281106 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start August 1, 2021 · period end August 31, 2021 · first reported February 17, 2022 · EPA return-to-compliance field August 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211327 January 11, 2022 Formal State Administrative/Compliance Order without penalty issued 9211328 January 11, 2022 Informal State Public Notification requested 9211330 July 14, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Single Turbidity Exceed (Enhanced SWTR)Violation 281107 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start July 1, 2021 · period end July 31, 2021 · first reported February 17, 2022 · EPA return-to-compliance field July 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211327 January 11, 2022 Formal State Administrative/Compliance Order without penalty issued 9211328 January 11, 2022 Informal State Public Notification requested 9211330 July 14, 2022 Resolving State Compliance achieved EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 281103 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start July 1, 2021 · period end July 31, 2021 · first reported February 17, 2022 · EPA return-to-compliance field July 31, 2021
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9211327 January 11, 2022 Formal State Administrative/Compliance Order without penalty issued 9211328 January 11, 2022 Informal State Public Notification requested 9211330 July 14, 2022 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