WY5680085 · Wyoming
YNP-OLD FAITHFUL
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 17
- EPA health-based flag
- 9
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 8
Counties listed by EPA · Teton County, Wyoming
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 16 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 · Archived
Monitoring, RegularViolation 4000764 · CYANIDE · Inorganic ChemicalsNoncompliance period start January 1, 2025 · period end December 31, 2025 · first reported August 27, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.EPA health-based flag · Resolved
OCCT/SOWT Study/RecommendationViolation 4000743 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2024 · period end March 6, 2025 · first reported June 24, 2025 · EPA return-to-compliance field March 6, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 356 March 6, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Initial, Follow-up, or Routine Source Water M/RViolation 4000742 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start July 1, 2024 · period end March 6, 2025 · first reported June 24, 2025 · EPA return-to-compliance field March 6, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 353 March 6, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Public EducationViolation 4000739 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start June 1, 2024 · period end May 1, 2025 · first reported June 24, 2025 · EPA return-to-compliance field May 1, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 368 May 1, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Public EducationViolation 4000740 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start March 1, 2024 · period end May 1, 2025 · first reported June 24, 2025 · EPA return-to-compliance field May 1, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 367 May 1, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Lead Consumer NoticeViolation 4000735 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start December 30, 2023 · period end February 3, 2024 · first reported February 22, 2024 · EPA return-to-compliance field February 3, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 341 February 3, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Public EducationViolation 4000741 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start November 30, 2023 · period end March 10, 2025 · first reported June 24, 2025 · EPA return-to-compliance field March 10, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 363 March 10, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 4000734 · Arsenic · Arsenic RuleNoncompliance period start October 1, 2023 · period end December 31, 2023 · first reported February 22, 2024 · EPA return-to-compliance field December 31, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 344 September 30, 2024 Formal Federal Final Administrative Order issued 364 February 18, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 4000731 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2023 · period end May 1, 2025 · first reported February 22, 2024 · EPA return-to-compliance field May 1, 2025
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 344 September 30, 2024 Formal Federal Final Administrative Order issued 366 May 1, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 4000733 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2023 · period end September 30, 2023 · first reported December 19, 2023 · 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 342 February 22, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 4000732 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start July 1, 2023 · period end September 30, 2023 · first reported December 19, 2023 · 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 342 February 22, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 4000730 · Arsenic · Arsenic RuleNoncompliance period start July 1, 2023 · period end September 30, 2023 · first reported November 15, 2023 · EPA return-to-compliance field September 30, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 344 September 30, 2024 Formal Federal Final Administrative Order issued 364 February 18, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Maximum Contaminant Level Violation, AverageViolation 4000729 · Arsenic · Arsenic RuleNoncompliance period start April 1, 2023 · period end June 30, 2023 · first reported September 11, 2023 · EPA return-to-compliance field June 30, 2023
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 344 September 30, 2024 Formal Federal Final Administrative Order issued 365 February 18, 2025 Resolving State Compliance achieved EPA health-based flag · Resolved
Failure To Address DeficiencyViolation 4000728 · Long Term 2 Enhanced Surface Water Treatment Rule · Long Term 2 Enhanced Surface Water Treatment RuleNoncompliance period start September 17, 2022 · period end October 16, 2024 · first reported February 16, 2023 · EPA return-to-compliance field October 16, 2024
2 linked actions
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 344 September 30, 2024 Formal Federal Final Administrative Order issued 343 October 16, 2024 Resolving State Compliance achieved EPA health-based flag · Resolved
Monthly Turbidity Exceed (Enhanced SWTR)Violation 4000725 · Interim Enhanced Surface Water Treatment Rule · Interim and Long Term 1 Enhanced Surface Water Treatment RuleNoncompliance period start June 1, 2022 · period end June 30, 2022 · first reported August 11, 2022 · EPA return-to-compliance field June 30, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 326 August 25, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 4000724 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start April 1, 2022 · period end April 30, 2022 · first reported August 11, 2022 · EPA return-to-compliance field April 30, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 325 May 2, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Filter)Violation 4000723 · Surface Water Treatment Rule · Surface Water Treatment RuleNoncompliance period start April 1, 2022 · period end April 30, 2022 · first reported August 11, 2022 · EPA return-to-compliance field April 30, 2022
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 322 June 21, 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