City of Westport

NPDES permit WA0020923 · Minor NON-POTW · effective, expires 2031-02-28 · 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.

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

0values over a limit
90required values missing, on 6 form(s)
0of 31 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 (36)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeAVERAGE report only (alert) all year
001Temperature, water deg. centigradeMAXIMUM report only (alert) all year
001Oxygen, dissolved [DO]Single Rdg 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 <= 200 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 300 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 <= 200 lb/d all year
001Solids, total suspendedWKLY AVG <= 300 lb/d all year
001Oil and grease, hexane extr methodSingle Rdg report only (alert) all year
001Nitrogen, ammonia total [as N]AVERAGE report only (alert) all year
001Nitrogen, Kjeldahl, total [as N]Single Rdg report only (alert) all year
001Nitrite + Nitrate total [as N]Single Rdg report only (alert) all year
001Phosphorus, total [as P]Single Rdg report only (alert) all year
001Hardness, total [as CaCO3]Single Rdg report only (alert) all year
001EnterococciAVERAGE report only (alert) all year
001Solids, total dissolvedSingle Rdg report only (alert) all year
001Coliform, fecal generalMO GEOMN <= 100 #/100mL all year
001Coliform, fecal generalWK GEOMN <= 200 #/100mL all year
001FlowAVERAGE report only (alert) all year
001FlowMAXIMUM report only (alert) all year
001BOD, carbonaceous [5 day, 20 C]Single Rdg report only (alert) all year
INFBOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
INFBOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
INFBOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
INFBOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
INFSolids, total suspendedAVERAGE report only (alert) all year
INFSolids, total suspendedMAXIMUM report only (alert) all year
INFSolids, total suspendedAVERAGE report only (alert) all year
INFSolids, total suspendedMAXIMUM report only (alert) all year
INFFlowAVERAGE report only (alert) all year
INFFlowMAXIMUM 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