Clean Water Act discharge permit · NPDES WA0023604
CHEWELAH WWTP, Chewelah, WA: NPDES WA0023604 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
CHEWELAH WWTP, held by City of Chewelah, holds NPDES permit WA0023604. EPA’s file records it issued October 25, 2011 and expiring November 29, 2016. 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 | CHEWELAH WWTP |
|---|---|
| Permittee as filed | City of Chewelah |
| NPDES ID | WA0023604 |
| 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 25, 2011 |
| Expiration date | November 29, 2016 |
| Issuing agency | State |
| Address | Chewelah, WA 99109 |
| Subwatershed | Dry Creek-Colville River (HUC 170200030110) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 11Pollutants on file
- 0Under a numeric limit
- 11With a violation of any kind
- 7With 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, maximum | 0 | 13 | 12 | April 30, 2013 | |
| pH, minimum | 0 | 6 | 5 | March 31, 2019 | |
| Solids, suspended percent removal | 0 | 2 | 2 | December 31, 2012 | 17% over the limit |
| Nitrogen, ammonia total [as N] | 0 | 135 | 1 | October 31, 2007 | 40% over the limit |
| Solids, total suspended | 0 | 1 | 1 | March 31, 2017 | 5% over the limit |
| Fecal coliform, MPN, EC med, 44.5 C | 0 | 1 | 1 | September 30, 2008 | 25% over the limit |
| Flow | 0 | 1 | 1 | March 31, 2017 | 19% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 136 | 0 | ||
| BOD, percent removal [total] | 0 | 59 | 0 | ||
| Depth of pond or reservoir in feet | 0 | 4 | 0 | ||
| Phosphorus, total [as P] | 0 | 2 | 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 WA0023604.
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 WA0023604 there.
Nearby on the register
- Discharge permits in Chewelah
- Every permit record in Chewelah, 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.