Clean Water Act discharge permit · NPDES WA0023396
MUKILTEO WATER AND WASTEWATER DISTRICT WWTP, Mukilteo, WA: NPDES WA0023396 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
MUKILTEO WATER AND WASTEWATER DISTRICT WWTP, held by MUKILTEO WATER & WASTEWATER DISTRICT, holds NPDES permit WA0023396. EPA’s file records it issued October 31, 2018 and expiring November 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 | MUKILTEO WATER AND WASTEWATER DISTRICT WWTP |
|---|---|
| Permittee as filed | MUKILTEO WATER & WASTEWATER DISTRICT |
| NPDES ID | WA0023396 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | October 31, 2018 |
| Expiration date | November 30, 2023 |
| Issuing agency | State |
| Address | Mukilteo, WA 98275 |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 0Under a numeric limit
- 8With a violation of any kind
- 3With 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 | 0 | 58 | 10 | August 31, 2012 | 93% over the limit |
| Solids, total suspended | 0 | 182 | 5 | September 30, 2009 | 76% over the limit |
| pH, minimum | 0 | 1 | 1 | May 31, 2007 | |
| BOD, carbonaceous [5 day, 20 C] | 0 | 191 | 0 | ||
| Flow | 0 | 49 | 0 | ||
| Temperature, water deg. centigrade | 0 | 47 | 0 | ||
| Coliform, fecal general | 0 | 43 | 0 | ||
| pH | 0 | 42 | 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 WA0023396.
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 WA0023396 there.
Nearby on the register
- Discharge permits in Mukilteo
- Every permit record in Mukilteo, 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.