OK2007102 · Oklahoma
HOLLISTER
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 7
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 6
Counties listed by EPA · Tillman 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 6 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 364 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
LSL ReportingViolation 184563 · 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 9001259 July 11, 2025 Informal State Violation/Reminder Notice 9001261 July 15, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
LSL InventoryViolation 184562 · 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 9001258 July 11, 2025 Informal State Violation/Reminder Notice 9001260 July 15, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 184560 · 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 9001252 November 30, 2023 Informal State Violation/Reminder Notice 9001253 November 30, 2023 Informal State Public Notification requested 9001254 January 12, 2024 Resolving State Compliance achieved 9001257 June 4, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 184559 · 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 9001252 November 30, 2023 Informal State Violation/Reminder Notice 9001253 November 30, 2023 Informal State Public Notification requested 9001254 January 12, 2024 Resolving State Compliance achieved 9001257 June 4, 2025 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 184558 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2021 · 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 9001248 December 2, 2022 Informal State Violation/Reminder Notice 9001249 December 2, 2022 Informal State Public Notification requested 9001250 March 8, 2023 Resolving State Compliance achieved 9001251 August 9, 2023 Informal State Public Notification received Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 184557 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2021 · 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 9001248 December 2, 2022 Informal State Violation/Reminder Notice 9001249 December 2, 2022 Informal State Public Notification requested 9001250 March 8, 2023 Resolving State Compliance achieved 9001251 August 9, 2023 Informal State Public Notification received Monitoring or reporting · Addressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 184453 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start January 1, 2011 · first reported May 18, 2011
5 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 2 February 15, 2011 Informal State Violation/Reminder Notice 3 February 15, 2011 Informal State Public Notification requested 5 September 26, 2011 Formal State Administrative/Compliance Order with penalty issued 7 March 1, 2012 Informal State Violation/Reminder Notice 10 June 7, 2012 Informal State Violation/Reminder Notice
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