City of Richland

NPDES permit WA0020419 · Major POTW · administratively continued, expires 2021-09-30 · 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 2021-09-30 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)
10of 24 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (86)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMAXIMUM report only (alert) all year
001Temperature, water deg. centigradeMAXIMUM report only (alert) all year
001Oxygen, dissolved [DO]MAXIMUM report only (alert) all year
001Oxygen, dissolved [DO]MAXIMUM 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 <= 2588 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG <= 2588 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 3882 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 3882 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
001Alkalinity, total [as CaCO3]MAXIMUM report only (alert) all year
001Alkalinity, total [as CaCO3]MAXIMUM report only (alert) 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 <= 2852 lb/d all year
001Solids, total suspendedMO AVG <= 2852 lb/d all year
001Solids, total suspendedWKLY AVG <= 4278 lb/d all year
001Solids, total suspendedWKLY AVG <= 4278 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG <= 18.5 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 18.5 mg/L all year
001Nitrogen, ammonia total [as N]MAXIMUM report only (alert) all year
001Nitrogen, ammonia total [as N]MAXIMUM report only (alert) all year
001Nitrogen, ammonia total [as N]MO AVG report only (alert) all year
001Nitrogen, ammonia total [as N]MO AVG report only (alert) all year
001Nitrogen, Kjeldahl, total [as N]MAXIMUM report only (alert) all year
001Nitrogen, Kjeldahl, total [as N]MAXIMUM report only (alert) all year
001Nitrite + Nitrate total [as N]MAXIMUM report only (alert) all year
001Nitrite + Nitrate total [as N]MAXIMUM report only (alert) all year
001Phosphorus, total [as P]MAXIMUM report only (alert) all year
001Phosphorus, total [as P]MAXIMUM report only (alert) all year
001Hardness, total [as CaCO3]MAXIMUM report only (alert) all year
001Hardness, total [as CaCO3]MAXIMUM report only (alert) all year
001Chlorine, total residualMAXIMUM report only all year
001Chlorine, total residualMO AVG <= .5 mg/L all year
001Chlorine, total residualMAXIMUM report only (alert) all year
001Chlorine, total residualMAXIMUM report only (alert) all year
001Chlorine, total residualMO AVG report only (alert) all year
001Chlorine, total residualMO AVG 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
001FlowMAXIMUM report only (alert) all year
001FlowMAXIMUM report only (alert) all year
001FlowMO AVG report only (alert) all year
001FlowMO AVG report only (alert) all year
001FlowMO TOTAL report only (alert) all year
001FlowMO TOTAL report only (alert) all year
001Solids, suspended percent removalMO AVG report only (alert) all year
001Solids, suspended percent removalMO 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
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. CAVERAGE 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
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. 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 suspendedAVERAGE report only (alert) all year
IN1Solids, total suspendedAVERAGE report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Solids, total suspendedMAXIMUM report only (alert) all year
IN1Nitrogen, ammonia total [as N]MAXIMUM report only (alert) all year
IN1Nitrogen, ammonia total [as N]MAXIMUM report only (alert) all year
IN1Nitrogen, ammonia total [as N]MO AVG report only (alert) all year
IN1Nitrogen, ammonia total [as N]MO AVG report only (alert) all year
IN1Nitrogen, ammonia total [as N]AVERAGE report only (alert) all year
IN1Nitrogen, ammonia total [as N]AVERAGE report only (alert) all year
IN1Nitrogen, ammonia total [as N]MAXIMUM report only (alert) all year
IN1Nitrogen, ammonia total [as N]MAXIMUM 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