Clean Water Act discharge permit · NPDES WA0020567
OAK HARBOR STP, Oak Harbor, WA: NPDES WA0020567 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
OAK HARBOR STP, held by OAK HARBOR CITY, holds NPDES permit WA0020567. EPA’s file records it issued April 27, 2018 and expiring April 30, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | OAK HARBOR STP |
|---|---|
| Permittee as filed | OAK HARBOR CITY |
| NPDES ID | WA0020567 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 27, 2018 |
| Expiration date | April 30, 2023 |
| Issuing agency | State |
| Address | Oak Harbor, WA 98277 |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 17Pollutants on file
- 0Under a numeric limit
- 17With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| BOD, carbonaceous [5 day, 20 C] | 0 | 131 | 5 | August 31, 2018 | 68% over the limit |
| Carbonaceous oxygen demand, % removal | 0 | 5 | 4 | August 31, 2018 | 39% over the limit |
| Flow | 0 | 66 | 2 | December 31, 2015 | 15% over the limit |
| pH, maximum | 0 | 1 | 1 | August 31, 2009 | |
| Solids, total suspended | 0 | 128 | 0 | ||
| BOD, 5-day, 20 deg. C | 0 | 34 | 0 | ||
| Temperature, water deg. centigrade | 0 | 32 | 0 | ||
| pH | 0 | 32 | 0 | ||
| Coliform, fecal general | 0 | 32 | 0 | ||
| Chlorine, total residual | 0 | 6 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 1 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 1 | 0 | ||
| Phosphorus, total [as P] | 0 | 1 | 0 | ||
| Chromium, hexavalent [as Cr] | 0 | 1 | 0 | ||
| Phosphate, ortho [as P] | 0 | 1 | 0 | ||
| Solids, suspended 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES WA0020567.
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, WA0020567.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 WA0020567 there.
Nearby on the register
- Discharge permits in Oak Harbor
- Every permit record in Oak Harbor, A to Z
- Discharge permits in Washington
- Every permit record in Washington, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.