OR4100510 · Oregon
MAUPIN, CITY OF
Federal fiscal 2026Q3 · EPA violation and follow-up records
- Violation records shown
- 20
- EPA health-based flag
- 1
- Health-based records unresolved in this snapshot
- 1
- Monitoring and reporting records
- 15
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 18 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.
EPA health-based flag · Unaddressed by formal action
LSL InventoryViolation 900700429 · LEAD AND COPPER RULE REVISIONS · Lead and Copper Rule RevisionsNoncompliance period start October 17, 2024 · first reported March 20, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 222 March 10, 2025 Informal State Public Notification requested Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 900700434 · Groundwater Rule · Ground Water 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 228 April 6, 2026 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 900700433 · Groundwater Rule · Ground Water RuleNoncompliance period start July 1, 2025 · period end July 31, 2025 · first reported December 23, 2025 · EPA return-to-compliance field July 31, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 227 September 2, 2025 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 900700431 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2025 · period end July 15, 2025 · first reported December 23, 2025 · EPA return-to-compliance field July 15, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 226 July 15, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 900700432 · Groundwater Rule · Ground Water RuleNoncompliance period start June 1, 2025 · period end June 30, 2025 · first reported August 26, 2025 · EPA return-to-compliance field June 30, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 227 September 2, 2025 Resolving State Compliance achieved Other or unclassified · Unaddressed by formal action
Public Notification Violation for NPDWR ViolationViolation 900700430 · Public Notice · Public Notice Rule and Revised PN RuleNoncompliance period start April 10, 2025 · first reported August 26, 2025
No linked action row appears in the records shown.Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 900700428 · 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 221 January 8, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 900700427 · 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 220 January 8, 2025 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 900700426 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start October 1, 2024 · period end July 15, 2025 · first reported March 20, 2025 · EPA return-to-compliance field July 15, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 225 July 15, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 900700425 · Groundwater Rule · Ground Water 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 223 October 3, 2024 Resolving State Compliance achieved Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 900700424 · Consumer Confidence Rule · Consumer Confidence RuleNoncompliance period start July 1, 2024 · period end July 15, 2025 · first reported December 16, 2024 · EPA return-to-compliance field July 15, 2025
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 225 July 15, 2025 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 900700421 · Groundwater Rule · Ground Water RuleNoncompliance period start August 1, 2023 · period end August 31, 2023 · first reported November 28, 2023 · EPA return-to-compliance field August 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 223 October 3, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 900700420 · Groundwater Rule · Ground Water RuleNoncompliance period start May 1, 2023 · period end May 31, 2023 · first reported August 30, 2023 · EPA return-to-compliance field May 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 223 October 3, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, Routine (RTCR)Violation 900700419 · Revised Total Coliform Rule · Revised Total Coliform RuleNoncompliance period start May 1, 2023 · period end May 31, 2023 · first reported August 30, 2023 · EPA return-to-compliance field May 31, 2023
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 217 June 27, 2023 Resolving State Compliance achieved Monitoring or reporting · Resolved
Follow-up Or Routine LCR Tap M/RViolation 900700418 · Lead and Copper Rule · Lead and Copper RuleNoncompliance period start October 1, 2022 · period end October 10, 2024 · first reported February 22, 2023 · EPA return-to-compliance field October 10, 2024
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 219 October 10, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 900700417 · Groundwater Rule · Ground Water RuleNoncompliance period start April 1, 2022 · period end April 30, 2022 · first reported September 12, 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 223 October 3, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring, RegularViolation 900700416 · Nitrate · Nitrate RuleNoncompliance period start January 1, 2021 · period end December 31, 2021 · first reported April 19, 2022 · EPA return-to-compliance field December 31, 2021
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 216 February 23, 2022 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)Violation 900700415 · Groundwater Rule · Ground Water RuleNoncompliance period start December 1, 2020 · period end December 31, 2020 · first reported March 4, 2021 · EPA return-to-compliance field December 31, 2020
1 linked action
Enforcement and resolution records linked by EPA Action ID Date Category EPA action type 215 February 9, 2021 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 900700423 · Total Haloacetic Acids (HAA5) · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2020 · period end September 30, 2023 · first reported February 15, 2024 · 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 218 August 9, 2024 Resolving State Compliance achieved Monitoring or reporting · Resolved
Monitoring and Reporting (DBP)Violation 900700422 · TTHM · Stage 2 Disinfectants and Disinfection Byproducts RuleNoncompliance period start October 1, 2020 · period end September 30, 2023 · first reported February 15, 2024 · 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 218 August 9, 2024 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