OR4100144 · Oregon

MOUNTAIN AIR WATER ASSOC

Federal fiscal 2026Q3 · EPA violation and follow-up records

Violation records shown: 56
EPA health-based flag: 0
Health-based records unresolved in this snapshot: 0
Monitoring and reporting records: 54

Counties listed by EPA · Clackamas 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 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
Monitoring, RegularViolation 902656464 · Nitrate · Nitrate Rule
Noncompliance period start January 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
8894917 April 28, 2026 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Monitoring, RegularViolation 902656439 · Nitrate · Nitrate Rule
Noncompliance period start January 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
8894918 April 28, 2026 Resolving State Compliance achieved
Monitoring or reporting · Archived
Failure to Conduct Assessment MonitoringViolation 902656413 · COLIPHAGE · Ground Water Rule
Noncompliance period start January 1, 2025 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Failure to Conduct Assessment MonitoringViolation 902656412 · COLIPHAGE · Ground Water Rule
Noncompliance period start January 1, 2025 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Other or unclassified · Resolved
Consumer Confidence Report Complete Failure to ReportViolation 902656410 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start July 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
8894916 September 30, 2024 Resolving State Compliance achieved
Other or unclassified · Resolved
Consumer Confidence Report Inadequate ReportingViolation 902656409 · Consumer Confidence Rule · Consumer Confidence Rule
Noncompliance period start October 1, 2023 · period end October 18, 2023 · first reported February 15, 2024 · EPA return-to-compliance field October 18, 2023

1 linked action

Enforcement and resolution records linked by EPA
Action ID Date Category EPA action type
8894915 October 18, 2023 Resolving State Compliance achieved
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656463 · Styrene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656462 · Ethylbenzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656461 · Toluene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656460 · Benzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656459 · CHLOROBENZENE · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656458 · Tetrachloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656457 · 1,1,2-Trichloroethane · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656456 · Trichloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656455 · 1,2-Dichloropropane · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656454 · Carbon tetrachloride · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656453 · 1,1,1-Trichloroethane · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656452 · 1,2-Dichloroethane · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656451 · trans-1,2-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656450 · 1,1-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656449 · Vinyl chloride · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656448 · p-Dichlorobenzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656447 · o-Dichlorobenzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656446 · DICHLOROMETHANE · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656445 · Xylenes, Total · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656444 · cis-1,2-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656443 · 1,2,4-Trichlorobenzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656438 · Styrene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656437 · Ethylbenzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656436 · Toluene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656435 · Benzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656434 · CHLOROBENZENE · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656433 · Tetrachloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656432 · 1,1,2-Trichloroethane · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656431 · Trichloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656430 · 1,2-Dichloropropane · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656429 · Carbon tetrachloride · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656428 · 1,1,1-Trichloroethane · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656427 · 1,2-Dichloroethane · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656426 · trans-1,2-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656425 · 1,1-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656424 · Vinyl chloride · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656423 · p-Dichlorobenzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656422 · o-Dichlorobenzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656421 · DICHLOROMETHANE · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656420 · Xylenes, Total · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656419 · cis-1,2-Dichloroethylene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656418 · 1,2,4-Trichlorobenzene · Volatile Organic Chemicals
Noncompliance period start January 1, 2023 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Resolved
Monitoring, RegularViolation 902656408 · Nitrate · Nitrate Rule
Noncompliance 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
8894914 March 4, 2022 Resolving State Compliance achieved
Monitoring or reporting · Resolved
Monitoring, RegularViolation 902656407 · Nitrate · Nitrate Rule
Noncompliance 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
8894913 March 4, 2022 Resolving State Compliance achieved
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656442 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2017 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656441 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2017 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656440 · Combined Uranium · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2017 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656417 · Gross Alpha, Excl. Radon and U · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2017 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656416 · Combined Radium (-226 and -228) · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2017 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.
Monitoring or reporting · Archived
Monitoring, RegularViolation 902656415 · Combined Uranium · Radionuclides and Revised Rad Rule
Noncompliance period start January 1, 2017 · period end December 31, 2025 · first reported March 25, 2026 · EPA return-to-compliance field December 31, 2025
No linked action row appears in the records shown.

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8894917	April 28, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8894918	April 28, 2026	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8894916	September 30, 2024	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8894915	October 18, 2023	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8894914	March 4, 2022	Resolving	State Compliance achieved

Enforcement and resolution records linked by EPA
Action ID	Date	Category	EPA action type
8894913	March 4, 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