City of Chelan POTW

NPDES permit WA0020605 · Minor POTW · administratively continued, expires 2022-01-31 · 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 2022-01-31 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
20required values missing, on 10 form(s)
0of 25 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 (64)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeSingle Rdg report only (alert) all year
001Temperature, water deg. centigradeSingle Rdg report only (alert) all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 661 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG <= 661 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 991 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 991 lb/d all year
001pHMAXIMUM <= 9 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMINIMUM >= 6 SU all year
001pHMINIMUM >= 6 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedMO AVG <= 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 suspendedMO AVG <= 661 lb/d all year
001Solids, total suspendedMO AVG <= 661 lb/d all year
001Solids, total suspendedWKLY AVG <= 991 lb/d all year
001Solids, total suspendedWKLY AVG <= 991 lb/d all year
001Nitrogen, ammonia total [as N]Single Rdg report only (alert) all year
001Nitrogen, ammonia total [as N]Single Rdg report only (alert) all year
001Chlorine, total residualMO AVG <= .5 mg/L all year
001Chlorine, total residualMO AVG <= .5 mg/L all year
001Chlorine, total residualWKLY AVG <= .75 mg/L all year
001Chlorine, total residualWKLY AVG <= .75 mg/L all year
001BOD, percent removal [total]MO AV MN >= 85 % all year
001BOD, percent removal [total]MO AV MN >= 85 % all year
001Coliform, fecal generalMO GEOMN <= 100 #/100mL all year
001Coliform, fecal generalMO GEOMN <= 100 #/100mL all year
001Coliform, fecal generalWK GEOMN <= 200 #/100mL all year
001Coliform, fecal generalWK GEOMN <= 200 #/100mL all year
001FlowSingle Rdg report only (alert) all year
001FlowSingle Rdg report only (alert) all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
002Oxygen, dissolved [DO]Single Rdg report only (alert) all year
002Oxygen, dissolved [DO]Single Rdg report only (alert) all year
002Oil and grease, hexane extr methodSingle Rdg report only (alert) all year
002Oil and grease, hexane extr methodSingle Rdg report only (alert) all year
002Nitrogen, Kjeldahl, total [as N]Single Rdg report only (alert) all year
002Nitrogen, Kjeldahl, total [as N]Single Rdg report only (alert) all year
002Nitrite + Nitrate total [as N]Single Rdg report only (alert) all year
002Nitrite + Nitrate total [as N]Single Rdg report only (alert) all year
002Phosphorus, total [as P]Single Rdg report only (alert) all year
002Phosphorus, total [as P]Single Rdg report only (alert) all year
002Hardness, total [as CaCO3]Single Rdg report only (alert) all year
002Hardness, total [as CaCO3]Single Rdg report only (alert) all year
002Solids, total dissolvedSingle Rdg report only (alert) all year
002Solids, total dissolvedSingle Rdg report only (alert) all year
IN1BOD, 5-day, 20 deg. CSingle Rdg report only (alert) all year
IN1BOD, 5-day, 20 deg. CSingle Rdg 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
IN1pHSingle Rdg report only (alert) all year
IN1pHSingle Rdg report only (alert) all year
IN1Solids, total suspendedSingle Rdg report only (alert) all year
IN1Solids, total suspendedSingle Rdg report only (alert) all year
IN1Solids, total suspendedAVERAGE report only (alert) all year
IN1Solids, total suspendedAVERAGE report only (alert) all year
IN1FlowAVERAGE report only (alert) all year
IN1FlowAVERAGE 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