Clean Water Act discharge permit · NPDES OR0020664
TILLAMOOK STP, Tillamook, OR: NPDES OR0020664 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 14Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
TILLAMOOK STP, held by TILLAMOOK, CITY OF, holds NPDES permit OR0020664, which discharges to Trask River (Rm 1.9). EPA’s file records it issued December 31, 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 | TILLAMOOK STP |
|---|---|
| Permittee as filed | TILLAMOOK, CITY OF |
| NPDES ID | OR0020664 |
| 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 31, 2018 |
| Expiration date | November 30, 2023 |
| Address | Tillamook, OR 97141 |
| Receiving water | TRASK RIVER (RM 1.9) |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Lower Trask River (HUC 171002030406) |
| 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
- 20Pollutants on file
- 14Under a numeric limit
- 15With 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 |
|---|---|---|---|---|---|
| pH | 4 | 10 | 8 | November 30, 2025 | |
| Solids, total suspended | 12 | 9 | 8 | March 31, 2017 | 32% over the limit |
| BOD, 5-day, 20 deg. C | 12 | 8 | 6 | August 31, 2018 | 51% over the limit |
| Nitrogen, ammonia total [as N] | 0 | 4 | 1 | September 30, 2017 | 22% over the limit |
| Excess thermal load | 1 | 1 | 1 | September 30, 2019 | 27% over the limit |
| Solids, suspended percent removal | 2 | 3 | 0 | ||
| Report due [yrmoda] | 2 | 3 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 3 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 3 | 0 | ||
| Phosphorus, total [as P] | 0 | 3 | 0 | ||
| E. coli | 4 | 2 | 0 | ||
| BOD, 5-day, percent removal | 2 | 2 | 0 | ||
| Alkalinity, total [as CaCO3] | 0 | 2 | 0 | ||
| Flow rate | 1 | 1 | 0 | ||
| Mercury, total recoverable | 0 | 1 | 0 | ||
| Coliform, fecal general | 8 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 0 | 0 | ||
| Temperature, water deg. centigrade | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| Chlorine usage | 1 | 0 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 2, 2024 | Management Practice Violations - Best Management Practice Deficiencies | ST6 |
| March 6, 2023 | WW SSO - Discharge to Waters | 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.
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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 OR0020664 there.
Nearby on the register
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- Every permit record in Oregon, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.