Clean Water Act discharge permit · NPDES WA0020613
COLFAX STP, Colfax, WA: NPDES WA0020613 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
COLFAX STP, held by City Of Colfax, holds NPDES permit WA0020613. EPA’s file records it issued October 26, 2010 and expiring October 31, 2015. 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 | COLFAX STP |
|---|---|
| Permittee as filed | City Of Colfax |
| NPDES ID | WA0020613 |
| 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 | October 26, 2010 |
| Expiration date | October 31, 2015 |
| Issuing agency | State |
| Address | Colfax, WA 99111 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Town of Harpole-Palouse River (HUC 170601080308) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 0Under a numeric limit
- 15With 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 |
|---|---|---|---|---|---|
| Flow | 0 | 42 | 18 | April 30, 2019 | 57% over the limit |
| Solids, suspended percent removal | 0 | 18 | 14 | November 30, 2024 | 160% over the limit |
| Coliform, fecal general | 0 | 41 | 4 | August 31, 2014 | 6,600% over the limit |
| Solids, total suspended | 0 | 283 | 3 | July 31, 2020 | 82% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 282 | 2 | October 31, 2011 | 22% over the limit |
| pH | 0 | 33 | 1 | March 31, 2012 | |
| Phosphorus, total [as P] | 0 | 170 | 0 | ||
| BOD, percent removal [total] | 0 | 86 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 32 | 0 | ||
| Temperature, water deg. centigrade | 0 | 22 | 0 | ||
| Alkalinity, total [as CaCO3] | 0 | 20 | 0 | ||
| Hardness, total [as CaCO3] | 0 | 20 | 0 | ||
| Chlorine, total residual | 0 | 16 | 0 | ||
| Dieldrin | 0 | 12 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 0 | 12 | 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 WA0020613.
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
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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 WA0020613 there.
Nearby on the register
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- Every permit record in Washington, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.