City of Oak Harbor

NPDES permit WA0020567 · Major POTW · administratively continued, expires 2023-04-30 · 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 2023-04-30 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 22 forms filed late

Last period with anything received: 2026-07-31.

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 (68)

OutfallParameterStatisticLimitMonths
003Temperature, water deg. centigradeAVERAGE report only (alert) all year
003Temperature, water deg. centigradeAVERAGE report only (alert) all year
003BOD, 5-day, 20 deg. CAVERAGE <= 30 mg/L all year
003BOD, 5-day, 20 deg. CAVERAGE <= 30 mg/L all year
003BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
003BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
003BOD, 5-day, 20 deg. CAVERAGE <= 700 lb/d all year
003BOD, 5-day, 20 deg. CAVERAGE <= 700 lb/d all year
003BOD, 5-day, 20 deg. CWKLY AVG <= 1050 lb/d all year
003BOD, 5-day, 20 deg. CWKLY AVG <= 1050 lb/d all year
003Solids, total suspendedAVERAGE <= 30 mg/L all year
003Solids, total suspendedAVERAGE <= 30 mg/L all year
003Solids, total suspendedWKLY AVG <= 45 mg/L all year
003Solids, total suspendedWKLY AVG <= 45 mg/L all year
003Solids, total suspendedAVERAGE <= 700 lb/d all year
003Solids, total suspendedAVERAGE <= 700 lb/d all year
003Solids, total suspendedWKLY AVG <= 1050 lb/d all year
003Solids, total suspendedWKLY AVG <= 1050 lb/d all year
003Nitrogen, ammonia total [as N]AVERAGE report only (alert) all year
003Nitrogen, ammonia total [as N]AVERAGE report only (alert) all year
003Nitrogen, Kjeldahl, total [as N]AVERAGE report only (alert) all year
003Nitrogen, Kjeldahl, total [as N]AVERAGE report only (alert) all year
003Nitrite + Nitrate total [as N]AVERAGE report only (alert) all year
003Nitrite + Nitrate total [as N]AVERAGE report only (alert) all year
003Phosphorus, total [as P]AVERAGE report only (alert) all year
003Phosphorus, total [as P]AVERAGE report only (alert) all year
003Phosphorus, dissolved reactive [drp as P]AVERAGE report only (alert) all year
003Phosphorus, dissolved reactive [drp as P]AVERAGE report only (alert) all year
003Ultraviolet light intensityMINIMUM report only (alert) all year
003Ultraviolet light intensityMINIMUM report only (alert) all year
003BOD, percent removal [total]MO AV MN >= 85 % all year
003BOD, percent removal [total]MO AV MN >= 85 % all year
003Ultraviolet light transmittanceMINIMUM report only (alert) all year
003Ultraviolet light transmittanceMINIMUM report only (alert) all year
003pH, maximumDAILY MX <= 9 SU all year
003pH, maximumDAILY MX <= 9 SU all year
003pH, minimumDAILY MN >= 6 SU all year
003pH, minimumDAILY MN >= 6 SU all year
003Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
003Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
003Coliform, fecal generalWK GEOMN <= 400 #/100mL all year
003Coliform, fecal generalWK GEOMN <= 400 #/100mL all year
003FlowAVERAGE report only (alert) all year
003FlowAVERAGE report only (alert) all year
003FlowMAXIMUM report only (alert) all year
003FlowMAXIMUM report only (alert) all year
003Solids, suspended percent removalMO AV MN >= 85 % all year
003Solids, suspended percent removalMO AV MN >= 85 % all year
IN3BOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
IN3BOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
IN3BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN3BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN3BOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
IN3BOD, 5-day, 20 deg. CAVERAGE report only (alert) all year
IN3BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN3BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN3Solids, total suspendedAVERAGE report only (alert) all year
IN3Solids, total suspendedAVERAGE report only (alert) all year
IN3Solids, total suspendedMAXIMUM report only (alert) all year
IN3Solids, total suspendedMAXIMUM report only (alert) all year
IN3Solids, total suspendedAVERAGE report only (alert) all year
IN3Solids, total suspendedAVERAGE report only (alert) all year
IN3Solids, total suspendedMAXIMUM report only (alert) all year
IN3Solids, total suspendedMAXIMUM report only (alert) all year
IN3FlowAVERAGE report only (alert) all year
IN3FlowAVERAGE report only (alert) all year
IN3FlowMAXIMUM report only (alert) all year
IN3FlowMAXIMUM 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