OK2003603 · Oklahoma
TONKAWA
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 12
- EPA health-based flag
- 2
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 10
Counties listed by EPA · Kay 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 4 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 317.5 days. The interval uses the reporting periods and dates on file.
EPA health-based flag · Archived
Maximum Contaminant Level Violation, E. coli (RTCR)Violation 288180 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start June 1, 2026 · period end June 30, 2026 · first reported August 11, 2026 · EPA return-to-compliance field June 30, 2026
No linked action row appears in the records shown.Monitoring or reporting · Archived
Monitoring, Routine (RTCR)Violation 288179 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start February 1, 2026 · period end February 28, 2026 · first reported May 13, 2026 · EPA return-to-compliance field February 28, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9203677 April 15, 2026 Informal State Violation/Reminder Notice 9203678 April 15, 2026 Informal State Public Notification requested 9203679 May 1, 2026 Informal State Public Notification received Monitoring or reporting · Archived
Monitoring and Reporting (DBP)Violation 288178 · Chlorine · Stage 1 Disinfectants and Disinfection Byproducts RuleNoncompliance period start February 1, 2026 · period end February 28, 2026 · first reported May 13, 2026 · EPA return-to-compliance field February 28, 2026
3 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9203677 April 15, 2026 Informal State Violation/Reminder Notice 9203678 April 15, 2026 Informal State Public Notification requested 9203679 May 1, 2026 Informal State Public Notification received Monitoring or reporting · Unaddressed by formal action
Monitoring, Source Water (GWR)Violation 288177 · E. COLI · Ground Water RuleNoncompliance period start August 14, 2025 · first reported November 14, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9203675 September 19, 2025 Informal State Violation/Reminder Notice 9203676 September 19, 2025 Informal State Public Notification requested Monitoring or reporting · Resolved
LSL ReportingViolation 288176 · 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 9203672 July 11, 2025 Informal State Violation/Reminder Notice 9203674 July 15, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
LSL InventoryViolation 288175 · 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 9203671 July 11, 2025 Informal State Violation/Reminder Notice 9203673 July 15, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 288173 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2022 · 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 9203667 November 30, 2023 Informal State Violation/Reminder Notice 9203668 November 30, 2023 Informal State Public Notification requested 9203669 March 25, 2024 Resolving State Compliance achieved 9203670 August 6, 2024 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 288172 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2022 · 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 9203667 November 30, 2023 Informal State Violation/Reminder Notice 9203668 November 30, 2023 Informal State Public Notification requested 9203669 March 25, 2024 Resolving State Compliance achieved 9203670 August 6, 2024 Informal State Public Notification received Monitoring or reporting · Unaddressed by formal action
Monitoring, Source Water (GWR)Violation 288141 · E. COLI · Ground Water RuleNoncompliance period start January 19, 2017 · first reported August 17, 2017
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9203658 July 17, 2017 Informal State Violation/Reminder Notice 9203659 July 17, 2017 Informal State Public Notification requested 9203662 September 27, 2019 Informal State Public Notification received 9203666 November 22, 2022 Informal State Intentional no-action Monitoring or reporting · Unaddressed by formal action
Monitoring, Source Water (GWR)Violation 288139 · E. COLI · Ground Water RuleNoncompliance period start September 17, 2015 · first reported May 18, 2016
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9203646 March 18, 2016 Informal State Violation/Reminder Notice 9203647 March 18, 2016 Informal State Public Notification requested 9203660 April 11, 2016 Informal State Public Notification received 9203665 November 22, 2022 Informal State Intentional no-action Monitoring or reporting · Unaddressed by formal action
Monitoring, Source Water (GWR)Violation 288136 · E. COLI · Ground Water RuleNoncompliance period start September 18, 2014 · first reported August 18, 2015
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9203648 June 29, 2015 Informal State Violation/Reminder Notice 9203649 June 29, 2015 Informal State Public Notification requested 9203660 April 11, 2016 Informal State Public Notification received 9203663 November 22, 2022 Informal State Intentional no-action Monitoring or reporting · Unaddressed by formal action
Monitoring, Source Water (GWR)Violation 288137 · E. COLI · Ground Water RuleNoncompliance period start August 21, 2014 · first reported August 18, 2015
4 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9203650 June 29, 2015 Informal State Violation/Reminder Notice 9203651 June 29, 2015 Informal State Public Notification requested 9203660 April 11, 2016 Informal State Public Notification received 9203664 November 22, 2022 Informal State Intentional no-action
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