Clean Water Act discharge permit · NPDES OR0020401
SEASIDE STP, Seaside, OR: NPDES OR0020401 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 12Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
SEASIDE STP, held by SEASIDE, CITY OF, holds NPDES permit OR0020401, which discharges to Necanicum River. EPA’s file records it issued December 6, 2018 and expiring November 30, 2023. 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 | SEASIDE STP |
|---|---|
| Permittee as filed | SEASIDE, CITY OF |
| NPDES ID | OR0020401 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 6, 2018 |
| Expiration date | November 30, 2023 |
| Address | Seaside, OR 97138 |
| Receiving water | NECANICUM RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Lower Necanicum River (HUC 171002010103) |
| 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
- 14Pollutants on file
- 12Under a numeric limit
- 14With a violation of any kind
- 6With 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 | 11 | 24 | 11 | September 30, 2024 | 210% over the limit |
| E. coli | 4 | 13 | 9 | September 30, 2024 | 496% over the limit |
| pH | 4 | 21 | 8 | March 31, 2025 | |
| Solids, suspended percent removal | 1 | 10 | 8 | December 31, 2023 | 120% over the limit |
| BOD, 5-day, 20 deg. C | 11 | 18 | 5 | April 30, 2013 | 151% over the limit |
| BOD, 5-day, percent removal | 1 | 4 | 2 | December 31, 2015 | 173% over the limit |
| Alkalinity, total [as CaCO3] | 2 | 11 | 0 | ||
| Temperature, water deg. centigrade | 2 | 7 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 6 | 0 | ||
| Ultraviolet light dosage | 2 | 6 | 0 | ||
| Report due [yrmoda] | 1 | 5 | 0 | ||
| Ultraviolet light transmittance | 0 | 4 | 0 | ||
| Mercury, total recoverable | 0 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| November 1, 2024 | Monitoring Violations - Frequency of Sampling Violation | ST6 |
| October 1, 2024 | Monitoring Violations - Frequency of Sampling Violation | ST6 |
| November 11, 2021 | WW SSO - Discharge to Waters | ST6 |
| February 22, 2021 | WW SSO - Discharge to Waters | ST6 |
| January 3, 2021 | WW SSO - Discharge to Waters | ST6 |
| January 3, 2021 | WW SSO - Discharge without a valid permit (includes satellite systems) | 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, OR0020401.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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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 OR0020401 there.
Nearby on the register
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- Every permit record in Seaside, 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.