City of Kennewick POTW

NPDES permit WA0044784 · Major POTW · expired, expires 2023-03-31 · 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 2023-03-31 and is expired: 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 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 (70)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMAXIMUM report only (alert) all year
001Temperature, water deg. centigradeMAXIMUM report only (alert) all year
001Oxygen, dissolved [DO]AVERAGE report only (alert) all year
001Oxygen, dissolved [DO]AVERAGE report only (alert) all year
001Oxygen, dissolved [DO]MINIMUM report only (alert) all year
001Oxygen, dissolved [DO]MINIMUM 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 <= 2552 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG <= 2552 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 3828 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 3828 lb/d all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001pHDAILY MX <= 9 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 <= 2552 lb/d all year
001Solids, total suspendedMO AVG <= 2552 lb/d all year
001Solids, total suspendedWKLY AVG <= 3828 lb/d all year
001Solids, total suspendedWKLY AVG <= 3828 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]MAXIMUM report only (alert) all year
001Nitrogen, ammonia total [as N]MAXIMUM report only (alert) 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 <= 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
001FlowTOTAL report only (alert) all year
001FlowTOTAL report only (alert) all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
002Alkalinity, total [as CaCO3]Single Rdg report only (alert) all year
002Alkalinity, total [as CaCO3]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
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. CMAXIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CMAXIMUM report only (alert) all year
IN1BOD, 5-day, 20 deg. CMO AVG report only (alert) all year
IN1BOD, 5-day, 20 deg. CMO AVG 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 suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMO AVG report only (alert) all year
IN1Solids, total suspendedMO AVG report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1FlowMAXIMUM report only (alert) all year
IN1FlowMAXIMUM report only (alert) all year
IN1FlowMO TOTAL report only (alert) all year
IN1FlowMO TOTAL 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