OR4100543 · Oregon
MOSIER, CITY OF
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 18
- EPA health-based flag
- 0
- Health-based records unresolved in this snapshot
- 0
- Monitoring and reporting records
- 18
Counties listed by EPA · Wasco County, Oregon
Find the utility’s annual water quality report. For current advisories, check the utility or local drinking-water authority.
Violations and what followed
Among 17 resolved records with both dates, the median interval from recorded noncompliance start to EPA’s return-to-compliance date was 30 days. The interval uses the reporting periods and dates on file.
Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 903361048 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start May 1, 2026 · period end May 31, 2026 · first reported September 22, 2026 · EPA return-to-compliance field May 31, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466295 June 26, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 903361045 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start February 1, 2026 · period end February 28, 2026 · first reported June 26, 2026 · EPA return-to-compliance field February 28, 2026
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466294 April 7, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 903361044 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start December 1, 2025 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466293 January 29, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 903361043 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start March 1, 2025 · period end March 31, 2025 · first reported June 24, 2025 · EPA return-to-compliance field March 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466291 April 28, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 903361042 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start February 1, 2025 · period end February 28, 2025 · first reported June 24, 2025 · EPA return-to-compliance field February 28, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466285 April 28, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 903361041 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start January 1, 2025 · period end January 31, 2025 · first reported June 24, 2025 · EPA return-to-compliance field January 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466290 April 28, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 903361038 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start December 1, 2024 · period end December 31, 2024 · first reported March 20, 2025 · EPA return-to-compliance field December 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466287 April 28, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 903361037 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start November 1, 2024 · period end November 30, 2024 · first reported March 20, 2025 · EPA return-to-compliance field November 30, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466289 April 28, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 903361036 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start October 1, 2024 · period end October 31, 2024 · first reported March 20, 2025 · EPA return-to-compliance field October 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466283 April 28, 2025 Resolving State Compliance achieved Monitoring or reporting · Unaddressed by formal action
Follow-up Or Routine LCR Tap M/RViolation 903361035 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2024 · first reported March 20, 2025
No linked action row appears in the records shown.Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 903361034 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start September 1, 2024 · period end September 30, 2024 · first reported December 16, 2024 · EPA return-to-compliance field September 30, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466284 April 28, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 903361033 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start August 1, 2024 · period end August 31, 2024 · first reported December 16, 2024 · EPA return-to-compliance field August 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466288 April 28, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 903361032 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start July 1, 2024 · period end July 31, 2024 · first reported December 16, 2024 · EPA return-to-compliance field July 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466286 April 28, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 903361040 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2022 · period end December 31, 2024 · first reported March 20, 2025 · EPA return-to-compliance field December 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466292 October 10, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 903361039 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start January 1, 2022 · period end December 31, 2024 · first reported March 20, 2025 · EPA return-to-compliance field December 31, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466292 October 10, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 903361029 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2020 · period end August 26, 2021 · first reported March 4, 2021 · EPA return-to-compliance field August 26, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466279 August 26, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 903361031 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2017 · period end September 30, 2020 · first reported March 4, 2021 · EPA return-to-compliance field September 30, 2020
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466280 November 16, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 903361030 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2017 · period end September 30, 2020 · first reported March 4, 2021 · EPA return-to-compliance field September 30, 2020
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 9466280 November 16, 2021 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