Red Bluff, City of

NPDES permit CA0078891 · Major POTW · effective, expires 2028-11-30 · 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.

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

1values over a limit
0required values missing, on 0 form(s)
0of 23 forms filed late

Last period with anything received: 2026-07-31. Most often over: Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubia (1).

Reporting

Reports are due about 32 days after each monitoring period ends (the most common figure among CA permits in EPA's filings — check your permit).

Limits in force (62)

OutfallParameterStatisticLimitMonths
EFF1Temperature, water deg. fahrenheitINST MAX report only all year
EFF1Specific conductanceDAILY MX report only all year
EFF1Oxygen, dissolved [DO]INST MIN report only all year
EFF1BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L all year
EFF1BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L all year
EFF1pHINST MIN >= 6.5 SU all year
EFF1pHINST MAX <= 8.5 SU all year
EFF1Solids, total suspendedMO AVG <= 10 mg/L all year
EFF1Solids, total suspendedWKLY AVG <= 15 mg/L all year
EFF1Nitrogen, ammonia total [as N]MO AVG <= 1.62 mg/L all year
EFF1Nitrogen, ammonia total [as N]WKLY AVG <= 2.81 mg/L all year
EFF1Nitrogen, nitrite total [as N]DAILY MX report only all year
EFF1Nitrogen, nitrate total [as N]DAILY MX report only all year
EFF1Nitrite + Nitrate total [as N]MO AVG <= 20 mg/L all year
EFF1Nitrite + Nitrate total [as N]WKLY AVG <= 28 mg/L all year
EFF1Cyanide, total [as CN]DAILY MX report only all year
EFF1Hardness, total [as CaCO3]DAILY MX report only all year
EFF1Zinc, total recoverableMO AVG <= 99 ug/L all year
EFF1Zinc, total recoverableDAILY MX <= 152 ug/L all year
EFF1Copper, total recoverableMO AVG <= 23 ug/L all year
EFF1Copper, total recoverableDAILY MX <= 36 ug/L all year
EFF1DichlorobromomethaneMO AVG <= 18 ug/L all year
EFF1DichlorobromomethaneDAILY MX <= 32 ug/L all year
EFF1DibromochloromethaneMO AVG <= 3.4 ug/L all year
EFF1DibromochloromethaneDAILY MX <= 6.3 ug/L all year
EFF1Benzo[k]fluorantheneMO AVG <= .0044 ug/L all year
EFF1Benzo[k]fluorantheneDAILY MX <= .0088 ug/L all year
EFF1ChlorpyrifosMO AVG report only all year
EFF1ChlorpyrifosWKLY AVG report only all year
EFF14,4'-DDDMO AVG <= .00083 ug/L all year
EFF14,4'-DDDDAILY MX <= .0017 ug/L all year
EFF1DieldrinMO AVG <= .00014 ug/L all year
EFF1DieldrinDAILY MX <= .00028 ug/L all year
EFF1DiazinonMO AVG report only all year
EFF1DiazinonWKLY AVG report only all year
EFF1Flow, in conduit or thru treatment plantMO AVG report only all year
EFF1Flow, in conduit or thru treatment plantDAILY MX report only all year
EFF1Chlorine, total residual4A <= .011 mg/L all year
EFF1Chlorine, total residual1I <= .019 mg/L all year
EFF1Diazinon + ChlorpyrifosMO AVG <= 1 ug/L all year
EFF1Diazinon + ChlorpyrifosWKLY AVG <= 1 ug/L all year
EFF1Coliform, total general7C <= 23 MPN/100mL all year
EFF1Coliform, total general3E <= 240 MPN/100mL all year
EFF1BOD, 5-day, percent removalMO AV MN >= 85 % all year
EFF1Solids, suspended percent removalMO AV MN >= 85 % all year
EFF1Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr O mykissDAILY MX <= 0 pass=0;fail=1 all year
EFF1Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr O mykissMO MED <= 0 pass=0;fail=1 all year
EFF1Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr O mykissDAILY MX <= 50 % effect all year
EFF1Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaDAILY MX <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaMO MED <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaDAILY MX <= 50 % effect all year
INF1Temperature, water deg. fahrenheitINST MAX report only all year
INF1Specific conductanceMO AVG report only all year
INF1Specific conductanceDAILY MX report only all year
INF1BOD, 5-day, 20 deg. CMO AVG report only all year
INF1BOD, 5-day, 20 deg. CDAILY MX report only all year
INF1pHINST MIN report only all year
INF1pHINST MAX report only all year
INF1Solids, total suspendedMO AVG report only all year
INF1Solids, total suspendedDAILY MX report only all year
INF1Flow, in conduit or thru treatment plantMO AVG report only all year
INF1Flow, in conduit or thru treatment plantDAILY MX report only 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