Clean Water Act discharge permit · NPDES OR0020389
RAINIER STP, Rainier, OR: NPDES OR0020389 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
RAINIER STP, held by RAINIER, CITY OF, holds NPDES permit OR0020389, which discharges to Columbia River (Rm 67.0). EPA’s file records it issued August 13, 2007 and expiring July 31, 2012. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | RAINIER STP |
|---|---|
| Permittee as filed | RAINIER, CITY OF |
| NPDES ID | OR0020389 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | August 13, 2007 |
| Expiration date | July 31, 2012 |
| Address | Rainier, OR 97048 |
| Receiving water | COLUMBIA RIVER (RM 67.0) |
| Subwatershed | Hermiston Ditch-Umatilla River (HUC 170701031305) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 7Pollutants on file
- 0Under a numeric limit
- 7With a violation of any kind
- 5With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, total suspended | 0 | 99 | 99 | February 29, 2024 | 3,580% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 8 | 6 | December 31, 2023 | 53% over the limit |
| pH | 0 | 5 | 5 | February 29, 2024 | |
| Solids, suspended percent removal | 0 | 3 | 3 | November 30, 2023 | 97% over the limit |
| E. coli | 0 | 1 | 1 | December 31, 2022 | 496% over the limit |
| Oil & Grease | 0 | 1 | 0 | ||
| BOD, 5-day, percent removal | 0 | 1 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 14Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| November 24, 2024 | WW SSO - Discharge to Waters | ST6 |
| January 18, 2024 | WW SSO - Discharge to Waters | ST6 |
| January 10, 2024 | WW SSO - Discharge to Waters | ST6 |
| December 5, 2023 | WW SSO - Discharge to Waters | ST6 |
| January 15, 2023 | WW SSO - Discharge to Waters | ST6 |
| January 3, 2023 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| December 31, 2022 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| November 30, 2022 | WW SSO - Discharge to Waters | ST6 |
| November 3, 2022 | WW SSO - Discharge to Waters | ST6 |
| April 11, 2022 | WW SSO - Discharge to Waters | ST6 |
| February 22, 2021 | Effluent Violations - Unauthorized Discharge | ST6 |
| December 1, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
| December 1, 2018 | Effluent Violations - Numeric effluent violation | ST6 |
| July 23, 2017 | Effluent Violations - Numeric effluent violation | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, OR0020389.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID OR0020389 there.
Nearby on the register
- Discharge permits in Rainier
- Every permit record in Rainier, A to Z
- Discharge permits in Oregon
- Every permit record in Oregon, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.