OK2000922 · Oklahoma
MUSTANG, CITY OF
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 13
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 10
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 9 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.
Monitoring or reporting · Unaddressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 40371 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2026 · first reported May 13, 2026
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1010507 February 19, 2026 Informal State Violation/Reminder Notice 1010508 February 19, 2026 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, RegularViolation 40366 · Arsenic · Arsenic RuleNoncompliance period start October 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 1010507 February 19, 2026 Informal State Violation/Reminder Notice 1010508 February 19, 2026 Informal State Public Notification requested 1010509 March 26, 2026 Resolving State Compliance achieved Other or unclassified · Unaddressed by formal action
Consumer Confidence Report Complete Failure to ReportViolation 40365 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · first reported November 14, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1010512 August 19, 2025 Informal State Violation/Reminder Notice Monitoring or reporting · Unaddressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 40364 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2025 · first reported November 14, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1010505 August 13, 2025 Informal State Violation/Reminder Notice 1010506 August 13, 2025 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring, RegularViolation 40361 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2025 · period end March 31, 2025 · first reported August 13, 2025 · EPA return-to-compliance field March 31, 2025
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1010498 June 3, 2025 Informal State Violation/Reminder Notice 1010499 June 3, 2025 Informal State Public Notification requested 1010500 July 9, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
LSL ReportingViolation 40363 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end July 15, 2025 · first reported August 13, 2025 · EPA return-to-compliance field July 15, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1010502 July 11, 2025 Informal State Violation/Reminder Notice 1010504 July 15, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
LSL InventoryViolation 40362 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · period end July 15, 2025 · first reported August 13, 2025 · EPA return-to-compliance field July 15, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1010501 July 11, 2025 Informal State Violation/Reminder Notice 1010503 July 15, 2025 Resolving State Compliance achieved Monitoring or reporting · Unaddressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 40359 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2024 · first reported February 25, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1010494 November 22, 2024 Informal State Violation/Reminder Notice 1010495 November 22, 2024 Informal State Public Notification requested Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 40358 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2024 · period end August 12, 2024 · first reported December 30, 2024 · EPA return-to-compliance field August 12, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1010490 July 12, 2024 Informal State Violation/Reminder Notice 1010491 August 12, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 40357 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2024 · period end March 31, 2024 · first reported June 14, 2024 · EPA return-to-compliance field March 31, 2024
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1010488 May 15, 2024 Informal State Violation/Reminder Notice 1010489 May 15, 2024 Informal State Public Notification requested 1010493 October 11, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 40356 · Nitrate-Nitrite · Nitrate RuleNoncompliance period start January 1, 2023 · period end December 31, 2023 · first reported June 14, 2024 · EPA return-to-compliance field December 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1010485 February 28, 2024 Informal State Violation/Reminder Notice 1010486 February 28, 2024 Informal State Public Notification requested 1010487 March 29, 2024 Resolving State Compliance achieved 1010492 July 18, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring, RegularViolation 40353 · Arsenic · Arsenic RuleNoncompliance period start January 1, 2023 · period end March 31, 2023 · first reported May 31, 2023 · EPA return-to-compliance field March 31, 2023
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1010480 March 14, 2023 Informal State Public Notification received 1010476 May 24, 2023 Informal State Violation/Reminder Notice 1010477 May 24, 2023 Informal State Public Notification requested 1010478 July 26, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 40347 · Arsenic · Arsenic RuleNoncompliance period start July 1, 2022 · period end September 30, 2022 · first reported March 27, 2023 · EPA return-to-compliance field September 30, 2022
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 1010471 December 2, 2022 Informal State Violation/Reminder Notice 1010472 December 2, 2022 Informal State Public Notification requested 1010475 April 6, 2023 Resolving State Compliance achieved 1010479 September 29, 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