Clean Water Act discharge permit · NPDES WA0020559
PATEROS POTW, Pateros, WA: NPDES WA0020559 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 15Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
PATEROS POTW, held by City of Pateros, holds NPDES permit WA0020559. EPA’s file records it issued February 26, 2015 and expiring March 31, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | PATEROS POTW |
|---|---|
| Permittee as filed | City of Pateros |
| NPDES ID | WA0020559 |
| 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 | February 26, 2015 |
| Expiration date | March 31, 2020 |
| Issuing agency | State |
| Address | Pateros, WA 98846 |
| Subwatershed | Watson Draw-Columbia River (HUC 170200050504) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 15Under a numeric limit
- 7With a violation of any kind
- 2With 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, 5-day, 20 deg. C | 10 | 2 | 2 | May 31, 2024 | 263% over the limit |
| pH | 4 | 2 | 2 | August 31, 2012 | |
| Oil and grease, hexane extr method | 2 | 3 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 3 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 3 | 0 | ||
| Phosphorus, total [as P] | 2 | 3 | 0 | ||
| Solids, total dissolved | 2 | 3 | 0 | ||
| Solids, total suspended | 10 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 4 | 0 | 0 | ||
| Temperature, water deg. centigrade | 3 | 0 | 0 | ||
| Coliform, fecal general | 3 | 0 | 0 | ||
| Flow | 3 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 0 | 0 | ||
| pH, maximum | 1 | 0 | 0 | ||
| pH, minimum | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES WA0020559.
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, WA0020559.
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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 WA0020559 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.