City of Snohomish

NPDES permit WA0029548 · Major POTW · administratively continued, expires 2023-06-30 · 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 2023-06-30 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 46 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 (114)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only (alert) all year
001Temperature, water deg. centigradeDAILY MX report only (alert) all year
001pHDAILY MN >= 6.4 SU all year
001pHDAILY MN >= 6.4 SU all year
001pHDAILY MX <= 9 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedAVERAGE <= 30 mg/L all year
001Solids, total suspendedAVERAGE <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedAVERAGE <= 701 lb/d all year
001Solids, total suspendedAVERAGE <= 701 lb/d all year
001Solids, total suspendedWKLY AVG <= 1051 lb/d all year
001Solids, total suspendedWKLY AVG <= 1051 lb/d all year
001Nitrogen, ammonia total [as N]AVERAGE report only (alert) all year
001Nitrogen, ammonia total [as N]AVERAGE report only (alert) all year
001Nitrogen, ammonia total [as N]DAILY MX report only (alert) all year
001Nitrogen, ammonia total [as N]DAILY MX report only (alert) all year
001Nitrogen, ammonia total [as N]AVERAGE report only (alert) all year
001Nitrogen, ammonia total [as N]AVERAGE report only (alert) all year
001Nitrogen, ammonia total [as N]DAILY MX report only (alert) all year
001Nitrogen, ammonia total [as N]DAILY MX report only (alert) all year
001Nitrogen, Kjeldahl, total [as N]AVERAGE report only (alert) all year
001Nitrogen, Kjeldahl, total [as N]AVERAGE report only (alert) all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only (alert) all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only (alert) all year
001Nitrite + Nitrate total [as N]AVERAGE report only (alert) all year
001Nitrite + Nitrate total [as N]AVERAGE report only (alert) all year
001Nitrite + Nitrate total [as N]DAILY MX report only (alert) all year
001Nitrite + Nitrate total [as N]DAILY MX report only (alert) all year
001Phosphorus, total [as P]AVERAGE report only (alert) all year
001Phosphorus, total [as P]AVERAGE report only (alert) all year
001Phosphorus, total [as P]DAILY MX report only (alert) all year
001Phosphorus, total [as P]DAILY MX report only (alert) all year
001Phosphorus, dissolved reactive [drp as P]AVERAGE report only (alert) all year
001Phosphorus, dissolved reactive [drp as P]AVERAGE report only (alert) all year
001Phosphorus, dissolved reactive [drp as P]DAILY MX report only (alert) all year
001Phosphorus, dissolved reactive [drp as P]DAILY MX report only (alert) all year
001Peracetic AcidDAILY MX <= 1 mg/L all year
001Peracetic AcidDAILY MX <= 1 mg/L all year
001Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
001Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
001Coliform, fecal generalWK GEOMN <= 400 #/100mL all year
001Coliform, fecal generalWK GEOMN <= 400 #/100mL all year
001FlowAVERAGE report only (alert) all year
001FlowAVERAGE report only (alert) all year
001FlowMAXIMUM report only (alert) all year
001FlowMAXIMUM report only (alert) all year
001BOD, carbonaceous [5 day, 20 C]AVERAGE <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]AVERAGE <= 25 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 40 mg/L all year
001BOD, carbonaceous [5 day, 20 C]AVERAGE <= 584 lb/d Jan, Feb, Mar, Apr, May, Jun, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]AVERAGE <= 584 lb/d Jan, Feb, Mar, Apr, May, Jun, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]AVERAGE report only (alert) Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]AVERAGE report only (alert) Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 934 lb/d Jan, Feb, Mar, Apr, May, Jun, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY AVG <= 934 lb/d Jan, Feb, Mar, Apr, May, Jun, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]WKLY AVG report only (alert) Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]WKLY AVG report only (alert) Jul, Aug, Sep, Oct
001Solids, suspended percent removalMO AV MN >= 85 % Apr, May, Jun, Jul, Aug, Sep, Oct
001Solids, suspended percent removalMO AV MN >= 85 % Apr, May, Jun, Jul, Aug, Sep, Oct
001Solids, suspended percent removalMO AV MN >= 72.2 % Jan, Feb, Mar, Nov, Dec
001Solids, suspended percent removalMO AV MN >= 72.2 % Jan, Feb, Mar, Nov, Dec
001Carbonaceous oxygen demand, % removalMO AV MN >= 85 % all year
001Carbonaceous oxygen demand, % removalMO AV MN >= 85 % all year
CSO1Rainfall durationTOTAL report only (alert) all year
CSO1Rainfall durationTOTAL report only (alert) all year
CSO1RainfallTOTAL report only (alert) all year
CSO1RainfallTOTAL report only (alert) all year
CSO1Volume, totalTOTAL report only (alert) all year
CSO1Volume, totalTOTAL report only (alert) all year
CSO1Duration of dischargeTOTAL report only (alert) all year
CSO1Duration of dischargeTOTAL report only (alert) all year
CSO2Rainfall durationTOTAL report only (alert) all year
CSO2Rainfall durationTOTAL report only (alert) all year
CSO2RainfallTOTAL report only (alert) all year
CSO2RainfallTOTAL report only (alert) all year
CSO2Volume, totalTOTAL report only (alert) all year
CSO2Volume, totalTOTAL report only (alert) all year
CSO2Duration of dischargeTOTAL report only (alert) all year
CSO2Duration of dischargeTOTAL 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) Jan, Feb, Mar, Nov, Dec
IN1Solids, total suspendedAVERAGE report only (alert) Jan, Feb, Mar, Nov, Dec
IN1Solids, total suspendedAVERAGE report only (alert) Apr, May, Jun, Jul, Aug, Sep, Oct
IN1Solids, total suspendedAVERAGE report only (alert) Apr, May, Jun, Jul, Aug, Sep, Oct
IN1Solids, total suspendedMAXIMUM report only (alert) Jan, Feb, Mar, Nov, Dec
IN1Solids, total suspendedMAXIMUM report only (alert) Jan, Feb, Mar, Nov, Dec
IN1Solids, total suspendedMAXIMUM report only (alert) Apr, May, Jun, Jul, Aug, Sep, Oct
IN1Solids, total suspendedMAXIMUM report only (alert) Apr, May, Jun, Jul, Aug, Sep, Oct
IN1Solids, total suspendedAVERAGE report only (alert) Apr, May, Jun, Jul, Aug, Sep, Oct
IN1Solids, total suspendedAVERAGE report only (alert) Apr, May, Jun, Jul, Aug, Sep, Oct
IN1Solids, total suspendedAVERAGE report only (alert) Jan, Feb, Mar, Nov, Dec
IN1Solids, total suspendedAVERAGE report only (alert) Jan, Feb, Mar, Nov, Dec
IN1Solids, total suspendedMAXIMUM report only (alert) Apr, May, Jun, Jul, Aug, Sep, Oct
IN1Solids, total suspendedMAXIMUM report only (alert) Apr, May, Jun, Jul, Aug, Sep, Oct
IN1Solids, total suspendedMAXIMUM report only (alert) Jan, Feb, Mar, Nov, Dec
IN1Solids, total suspendedMAXIMUM report only (alert) Jan, Feb, Mar, Nov, Dec
IN1FlowAVERAGE report only (alert) all year
IN1FlowAVERAGE report only (alert) all year
IN1FlowMAXIMUM report only (alert) all year
IN1FlowMAXIMUM report only (alert) all year
IN1BOD, carbonaceous [5 day, 20 C]AVERAGE report only (alert) all year
IN1BOD, carbonaceous [5 day, 20 C]AVERAGE report only (alert) all year
IN1BOD, carbonaceous [5 day, 20 C]MAXIMUM report only (alert) all year
IN1BOD, carbonaceous [5 day, 20 C]MAXIMUM 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