City of Mount Vernon Public Works

NPDES permit WA0024074 · Major POTW · administratively continued, expires 2022-02-28 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2022-02-28 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 26 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among WA permits in EPA's filings — check your permit).

Limits in force (76)

OutfallParameterStatisticLimitMonths
004Temperature, water deg. centigradeMAXIMUM report only (alert) all year
004Temperature, water deg. centigradeMAXIMUM report only (alert) all year
004BOD, 5-day, 20 deg. CAVERAGE <= 30 mg/L all year
004BOD, 5-day, 20 deg. CAVERAGE <= 30 mg/L all year
004BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
004BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
004BOD, 5-day, 20 deg. CAVERAGE <= 3753 lb/d all year
004BOD, 5-day, 20 deg. CAVERAGE <= 3753 lb/d all year
004BOD, 5-day, 20 deg. CWKLY AVG <= 5630 lb/d all year
004BOD, 5-day, 20 deg. CWKLY AVG <= 5630 lb/d all year
004Solids, total suspendedAVERAGE <= 30 mg/L all year
004Solids, total suspendedAVERAGE <= 30 mg/L all year
004Solids, total suspendedWKLY AVG <= 45 mg/L all year
004Solids, total suspendedWKLY AVG <= 45 mg/L all year
004Solids, total suspendedAVERAGE <= 3753 lb/d all year
004Solids, total suspendedAVERAGE <= 3753 lb/d all year
004Solids, total suspendedWKLY AVG <= 5630 lb/d all year
004Solids, total suspendedWKLY AVG <= 5630 lb/d all year
004Nitrogen, ammonia total [as N]AVERAGE report only (alert) all year
004Nitrogen, ammonia total [as N]AVERAGE report only (alert) all year
004Nitrogen, Kjeldahl, total [as N]AVERAGE report only (alert) all year
004Nitrogen, Kjeldahl, total [as N]AVERAGE report only (alert) all year
004Nitrite + Nitrate total [as N]AVERAGE report only (alert) all year
004Nitrite + Nitrate total [as N]AVERAGE report only (alert) all year
004Phosphorus, total [as P]AVERAGE report only (alert) all year
004Phosphorus, total [as P]AVERAGE report only (alert) all year
004Phosphorus, dissolved reactive [drp as P]AVERAGE report only (alert) all year
004Phosphorus, dissolved reactive [drp as P]AVERAGE report only (alert) all year
004BOD, percent removal [total]MO AV MN >= 85 % all year
004BOD, percent removal [total]MO AV MN >= 85 % all year
004pH, maximumDAILY MX <= 9 SU all year
004pH, maximumDAILY MX <= 9 SU all year
004pH, minimumDAILY MN >= 6.3 SU all year
004pH, minimumDAILY MN >= 6.3 SU all year
004Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
004Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
004Coliform, fecal generalWK GEOMN <= 400 #/100mL all year
004Coliform, fecal generalWK GEOMN <= 400 #/100mL all year
004Solids, suspended percent removalMO AV MN >= 85 % all year
004Solids, suspended percent removalMO AV MN >= 85 % all year
CSO2Rainfall durationMAXIMUM report only (alert) all year
CSO2Rainfall durationMAXIMUM report only (alert) all year
CSO2RainfallMAXIMUM report only (alert) all year
CSO2RainfallMAXIMUM report only (alert) all year
CSO2DurationMAXIMUM report only (alert) all year
CSO2DurationMAXIMUM report only (alert) all year
CSO2Volume, totalMAXIMUM report only (alert) all year
CSO2Volume, totalMAXIMUM report only (alert) all year
CSO3Rainfall durationMAXIMUM report only (alert) all year
CSO3Rainfall durationMAXIMUM report only (alert) all year
CSO3RainfallMAXIMUM report only (alert) all year
CSO3RainfallMAXIMUM report only (alert) all year
CSO3DurationMAXIMUM report only (alert) all year
CSO3DurationMAXIMUM report only (alert) all year
CSO3Volume, totalMAXIMUM report only (alert) all year
CSO3Volume, totalMAXIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
IN1BOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
IN1BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
IN1BOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
IN1BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN1Solids, total suspendedAVERAGE report only (alert) all year
IN1Solids, total suspendedAVERAGE report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedAVERAGE report only (alert) all year
IN1Solids, total suspendedAVERAGE report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1FlowAVERAGE report only (alert) all year
IN1FlowAVERAGE report only (alert) all year
IN1FlowMAXIMUM report only (alert) all year
IN1FlowMAXIMUM report only (alert) all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states