OK3000909 · Oklahoma
UNION CITY
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 22
- EPA health-based flag
- 18
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 4
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 21 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.
EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40759 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end March 31, 2025 · first reported May 15, 2025 · EPA return-to-compliance field March 31, 2025
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 292 March 28, 2025 Informal State Violation/Reminder Notice 293 March 28, 2025 Informal State Public Notification requested 296 April 23, 2025 Informal State Public Notification received 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40758 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2025 · period end March 31, 2025 · first reported May 15, 2025 · EPA return-to-compliance field March 31, 2025
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 292 March 28, 2025 Informal State Violation/Reminder Notice 293 March 28, 2025 Informal State Public Notification requested 296 April 23, 2025 Informal State Public Notification received 298 May 28, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Failure Submit IDSE/Subpart V Plan RptViolation 40757 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start December 30, 2024 · period end April 10, 2025 · first reported May 15, 2025 · EPA return-to-compliance field April 10, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 291 February 27, 2025 Informal State Violation/Reminder Notice 295 April 10, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40756 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2024 · period end December 31, 2024 · first reported February 25, 2025 · EPA return-to-compliance field December 31, 2024
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 288 December 17, 2024 Informal State Violation/Reminder Notice 289 December 17, 2024 Informal State Public Notification requested 290 December 26, 2024 Informal State Public Notification received 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40755 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2024 · period end December 31, 2024 · first reported February 25, 2025 · EPA return-to-compliance field December 31, 2024
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 288 December 17, 2024 Informal State Violation/Reminder Notice 289 December 17, 2024 Informal State Public Notification requested 290 December 26, 2024 Informal State Public Notification received 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40754 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2024 · period end September 30, 2024 · first reported December 30, 2024 · EPA return-to-compliance field September 30, 2024
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 284 September 10, 2024 Informal State Violation/Reminder Notice 285 September 10, 2024 Informal State Public Notification requested 286 October 1, 2024 Informal State Public Notification received 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40753 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2024 · period end September 30, 2024 · first reported December 30, 2024 · EPA return-to-compliance field September 30, 2024
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 284 September 10, 2024 Informal State Violation/Reminder Notice 285 September 10, 2024 Informal State Public Notification requested 286 October 1, 2024 Informal State Public Notification received 298 May 28, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 40752 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start June 1, 2024 · period end June 30, 2024 · first reported September 30, 2024 · EPA return-to-compliance field June 30, 2024
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 276 August 21, 2024 Informal State Violation/Reminder Notice 277 August 21, 2024 Informal State Public Notification requested 287 October 11, 2024 Resolving State Compliance achieved 297 July 23, 2025 Informal State Public Notification received EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40751 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2024 · period end June 30, 2024 · first reported September 30, 2024 · EPA return-to-compliance field June 30, 2024
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 272 May 28, 2024 Informal State Violation/Reminder Notice 273 May 28, 2024 Informal State Public Notification requested 274 June 26, 2024 Informal State Public Notification received 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40750 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2024 · period end June 30, 2024 · first reported September 30, 2024 · EPA return-to-compliance field June 30, 2024
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 272 May 28, 2024 Informal State Violation/Reminder Notice 273 May 28, 2024 Informal State Public Notification requested 274 June 26, 2024 Informal State Public Notification received 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40749 · TTHM · Stage 2 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
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 270 May 7, 2024 Informal State Violation/Reminder Notice 271 May 7, 2024 Informal State Public Notification requested 275 June 26, 2024 Informal State Public Notification received 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40748 · TTHM · Stage 2 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
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 270 May 7, 2024 Informal State Violation/Reminder Notice 271 May 7, 2024 Informal State Public Notification requested 275 June 26, 2024 Informal State Public Notification received 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40746 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 264 January 4, 2024 Formal State Administrative/Compliance Order without penalty issued 265 January 4, 2024 Informal State Public Notification requested 269 February 5, 2024 Informal State Public Notification received 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40745 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 14, 2024 · EPA return-to-compliance field December 31, 2023
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 264 January 4, 2024 Formal State Administrative/Compliance Order without penalty issued 265 January 4, 2024 Informal State Public Notification requested 269 February 5, 2024 Informal State Public Notification received 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 298 May 28, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Failure Submit IDSE/Subpart V Plan RptViolation 40747 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start September 29, 2023 · period end April 10, 2025 · first reported June 14, 2024 · EPA return-to-compliance field April 10, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 267 February 16, 2024 Informal State Violation/Reminder Notice 294 April 10, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40744 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2023 · period end September 30, 2023 · first reported January 2, 2024 · EPA return-to-compliance field September 30, 2023
7 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 260 November 15, 2023 Formal State Administrative/Compliance Order without penalty issued 261 November 15, 2023 Informal State Public Notification requested 262 November 15, 2023 Formal State Administrative/Compliance Order without penalty issued 263 November 15, 2023 Informal State Public Notification requested 266 December 1, 2023 Informal State Public Notification received 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40743 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2023 · period end September 30, 2023 · first reported January 2, 2024 · EPA return-to-compliance field September 30, 2023
7 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 260 November 15, 2023 Formal State Administrative/Compliance Order without penalty issued 261 November 15, 2023 Informal State Public Notification requested 262 November 15, 2023 Formal State Administrative/Compliance Order without penalty issued 263 November 15, 2023 Informal State Public Notification requested 266 December 1, 2023 Informal State Public Notification received 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 298 May 28, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Failure Submit IDSE/Subpart V Plan RptViolation 40742 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start June 30, 2023 · period end March 15, 2023 · first reported January 2, 2024 · EPA return-to-compliance field March 15, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 259 March 15, 2023 Resolving State Compliance achieved 255 August 25, 2023 Informal State Violation/Reminder Notice EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40741 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported August 29, 2023 · EPA return-to-compliance field June 30, 2023
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 256 August 21, 2023 Formal State Administrative/Compliance Order without penalty issued 257 August 21, 2023 Informal State Public Notification requested 258 September 11, 2023 Informal State Public Notification received 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40740 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported August 29, 2023 · EPA return-to-compliance field June 30, 2023
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 256 August 21, 2023 Formal State Administrative/Compliance Order without penalty issued 257 August 21, 2023 Informal State Public Notification requested 258 September 11, 2023 Informal State Public Notification received 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40739 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end March 31, 2023 · first reported August 29, 2023 · EPA return-to-compliance field March 31, 2023
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 252 May 30, 2023 Formal State Administrative/Compliance Order without penalty issued 253 May 30, 2023 Informal State Public Notification requested 254 July 14, 2023 Informal State Public Notification received 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 298 May 28, 2026 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 40738 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2023 · period end March 31, 2023 · first reported August 29, 2023 · EPA return-to-compliance field March 31, 2023
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 252 May 30, 2023 Formal State Administrative/Compliance Order without penalty issued 253 May 30, 2023 Informal State Public Notification requested 254 July 14, 2023 Informal State Public Notification received 268 March 22, 2024 Formal State Administrative/Compliance Order with penalty issued 298 May 28, 2026 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.
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