EPA enforcement actions against wastewater plants in Oregon
11 formal actions at 9 of 124 plants · $62,110 in penalties · 7 EPA inspections
EPA's enforcement records list 11 formal civil enforcement cases naming publicly owned wastewater treatment plants in Oregon, 2 of them since fiscal year 2020. The cases involve 9 of the state's 124 plants, with $62,110 in penalties assessed. The most common ground is general duty/accidental release (3 cases). EPA has inspected 3 plants in the state, 7 inspections in total. Every plant links to its profile, and every case to its report on EPA's ECHO site.
Recent enforcement actions in Oregon
| Plant | Date | Type | Law section | Outcome | Penalty | Source |
|---|---|---|---|---|---|---|
| Seaside WWTP Seaside | Aug 2024 · FY2024 | Administrative order | NPDES Permit Violations | Final Order With Penalty | $3,750 | ECHO 10-2024-0056 |
| EPA's description: “On August 20, 2024, Region 10 issued an expedited settlement agreement and final order to the City of Seaside Wastewater Plant located in Seaside, Oregon. Alleged violations included failure to…” | ||||||
| Warm Springs WWTP Warm Springs | Mar 2022 · FY2001 | Administrative order | NPDES Discharge without a Permit | Final Order No Penalty | — | ECHO 10-2001-0116 |
| Mosier WWTP Mosier | Aug 2021 · FY2021 | Administrative order | NPDES Permit Violations | Final Order With Penalty | $52,500 | ECHO 10-2021-0101 |
| EPA's description: “EPA Region 10 Settles with Union Pacific Railroad Company, Mosier, OR for CWA Violations On August 27th, 2021 , Region 10 filed a consent agreement and final order resolving violations of the Clean…” | ||||||
| Warm Springs WWTP Warm Springs | Jul 2021 · FY2013 | Administrative order | NPDES Permit Violations | Final Order No Penalty | — | ECHO 10-2013-0050 |
| EPA's description: “On May 16, 2013, the region issued an Administrative Order on Consent for the Confederated Tribes of Warm Springs Reservation of Oregon, Wastewater Treatment Plant. The Confederated Tribes of Warm…” | ||||||
| Warrenton STP Warrenton | May 2017 · FY1997 | Administrative order | Permits for Dredge and Fill Material | Final Order No Penalty | — | ECHO 10-1997-0158 |
| Oak Lodge Water Reclamation Facility Milwaukie | Dec 2009 · FY2010 | Administrative order | Prevention of Accidental Release/Risk Management Plans (RMPs) | Final Order With Penalty | $1,000 | ECHO 10-2010-0014 |
| EPA's description: “Violations of Clean Air Act Section 112r” | ||||||
| Hermiston WWTP Hermiston | May 2008 · FY2008 | Administrative order | Prevention of Accidental Release/Risk Management Plans (RMPs) | Final Order With Penalty | $1,810 | ECHO 10-2008-0079 |
| Toledo STP Toledo | Aug 2004 · FY2001 | Administrative order | General Duty/Accidental Release | Final Order With Penalty | $750 | ECHO 10-2001-0111 |
| Monmouth STP Monmouth | Aug 2004 · FY2001 | Administrative order | General Duty/Accidental Release | Final Order With Penalty | $750 | ECHO 10-2001-0113 |
| Cannon Beach WWTF Cannon Beach | Jan 2004 · FY2004 | Administrative order | UST Release Detection, Prevention, Correction Regulations | Final Order With Penalty | $50 | ECHO 10-2004-0096 |
| EPA's description: “Expedited Settlement Program” | ||||||
Full case histories, milestones, violation types and EPA's complete case summaries for every plant are shown with a free Klarifi account. Create one →
Largest penalties in Oregon
| # | Plant | Date | Type | Outcome | Penalty | Compliance actions | Source |
|---|---|---|---|---|---|---|---|
| 1 | Mosier WWTP Mosier | Aug 2021 · FY2021 | Administrative order | Final Order With Penalty | $52,500 | $1M | ECHO 10-2021-0101 |
| 2 | Seaside WWTP Seaside | Aug 2024 · FY2024 | Administrative order | Final Order With Penalty | $3,750 | $100 | ECHO 10-2024-0056 |
| 3 | Hermiston WWTP Hermiston | May 2008 · FY2008 | Administrative order | Final Order With Penalty | $1,810 | $10,000 | ECHO 10-2008-0079 |
| 4 | Seaside WWTP Seaside | Sep 2001 · FY2001 | Administrative order | Final Order With Penalty | $1,500 | — | ECHO 10-2001-0199 |
| 5 | Oak Lodge Water Reclamation Facility Milwaukie | Dec 2009 · FY2010 | Administrative order | Final Order With Penalty | $1,000 | $22,480 | ECHO 10-2010-0014 |
| 6 | Toledo STP Toledo | Aug 2004 · FY2001 | Administrative order | Final Order With Penalty | $750 | — | ECHO 10-2001-0111 |
| 7 | Monmouth STP Monmouth | Aug 2004 · FY2001 | Administrative order | Final Order With Penalty | $750 | — | ECHO 10-2001-0113 |
| 8 | Cannon Beach WWTF Cannon Beach | Jan 2004 · FY2004 | Administrative order | Final Order With Penalty | $50 | — | ECHO 10-2004-0096 |
Actions by fiscal year
| Fiscal year | Formal actions | Penalties |
|---|---|---|
| FY2017 | 0 | — |
| FY2018 | 0 | — |
| FY2019 | 0 | — |
| FY2020 | 0 | — |
| FY2021 | 1 | $52,500 |
| FY2022 | 0 | — |
| FY2023 | 0 | — |
| FY2024 | 1 | $3,750 |
| FY2025 | 0 | — |
| FY2026 | 0 | — |
EPA fiscal years run from 1 October to 30 September. The current year is partial.
EPA enforcement in Oregon: questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 17, 2026.
Enforcement data: EPA ICIS-FE&C civil enforcement cases and ICIS compliance inspections, via ECHO. Penalties are the amounts assessed or agreed in each case as EPA records them. Latest case status in this data: Aug 2024.