LYNDEN CITY OF

NPDES permit WA0022578 · Major POTW · administratively continued, expires 2022-10-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

4values over a limit
0required values missing, on 0 form(s)
0of 22 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (4).

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 (30)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeAVERAGE report only (alert) all year
001Temperature, water deg. centigradeMAXIMUM report only (alert) all year
001Oxygen, dissolved [DO]MINIMUM report only (alert) all year
001BOD, 5-day, 20 deg. CAVERAGE <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CAVERAGE <= 545 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 818 lb/d all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedAVERAGE <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedAVERAGE <= 545 lb/d all year
001Solids, total suspendedWKLY AVG <= 818 lb/d all year
001Chlorine, total residualAVERAGE <= .058 mg/L all year
001BOD, percent removal [total]MO AV MN >= 85 % all year
001Coliform, fecal generalMO GEOMN <= 28 #/100mL all year
001Coliform, fecal generalWK GEOMN <= 400 #/100mL all year
001FlowAVERAGE report only (alert) all year
001FlowINST MAX report only (alert) all year
001Solids, suspended percent removalMO AV MN >= 85 % 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. CAVERAGE 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 suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedAVERAGE report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1FlowAVERAGE 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