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Red Bluff, City of

Sewage treatment plant, major discharger, Red Bluff, California. NPDES permit CA0078891, in force until Nov 30, 2028. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 32 days after each period: outfall EFF1 form A monthly (32 values), outfall INF1 form A monthly (11 values), outfall EFF1 form Q quarterly, outfall EFF1 form Y yearly
Last report on file
August 2026

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimit
June 2026Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubia, daily maximum22.2 pass=0;fail=1≤ 0 pass=0;fail=1

Limits in force (62)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all yearEFF1
Specific conductancedaily maximumreport only (umho/cm)all yearEFF1
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all yearEFF1
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall yearEFF1
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall yearEFF1
pHinstantaneous minimum≥ 6.5 SUall yearEFF1
pHinstantaneous maximum≤ 8.5 SUall yearEFF1
Solids, total suspendedmonthly average≤ 10 mg/Lall yearEFF1
Solids, total suspendedweekly average≤ 15 mg/Lall yearEFF1
Nitrogen, ammonia total [as N]monthly average≤ 1.62 mg/Lall yearEFF1
Nitrogen, ammonia total [as N]weekly average≤ 2.81 mg/Lall yearEFF1
Nitrogen, nitrite total [as N]daily maximumreport only (mg/L)all yearEFF1
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all yearEFF1
Nitrite + Nitrate total [as N]monthly average≤ 20 mg/Lall yearEFF1
Nitrite + Nitrate total [as N]weekly average≤ 28 mg/Lall yearEFF1
Cyanide, total [as CN]daily maximumreport only (ug/L)all yearEFF1
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all yearEFF1
Zinc, total recoverablemonthly average≤ 99 ug/Lall yearEFF1
Zinc, total recoverabledaily maximum≤ 152 ug/Lall yearEFF1
Copper, total recoverablemonthly average≤ 23 ug/Lall yearEFF1
Copper, total recoverabledaily maximum≤ 36 ug/Lall yearEFF1
Dichlorobromomethanemonthly average≤ 18 ug/Lall yearEFF1
Dichlorobromomethanedaily maximum≤ 32 ug/Lall yearEFF1
Dibromochloromethanemonthly average≤ 3.4 ug/Lall yearEFF1
Dibromochloromethanedaily maximum≤ 6.3 ug/Lall yearEFF1
Benzo[k]fluoranthenemonthly average≤ .0044 ug/Lall yearEFF1
Benzo[k]fluoranthenedaily maximum≤ .0088 ug/Lall yearEFF1
Chlorpyrifosmonthly averagereport only (ug/L)all yearEFF1
Chlorpyrifosweekly averagereport only (ug/L)all yearEFF1
4,4'-DDDmonthly average≤ .00083 ug/Lall yearEFF1
4,4'-DDDdaily maximum≤ .0017 ug/Lall yearEFF1
Dieldrinmonthly average≤ .00014 ug/Lall yearEFF1
Dieldrindaily maximum≤ .00028 ug/Lall yearEFF1
Diazinonmonthly averagereport only (ug/L)all yearEFF1
Diazinonweekly averagereport only (ug/L)all yearEFF1
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearEFF1
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearEFF1
Chlorine, total residual4-day average≤ .011 mg/Lall yearEFF1
Chlorine, total residual1-hour average≤ .019 mg/Lall yearEFF1
Diazinon + Chlorpyrifosmonthly average≤ 1 ug/Lall yearEFF1
Diazinon + Chlorpyrifosweekly average≤ 1 ug/Lall yearEFF1
Coliform, total general7-day median≤ 23 MPN/100mLall yearEFF1
Coliform, total general30-day maximum≤ 240 MPN/100mLall yearEFF1
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all yearEFF1
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearEFF1
Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr O mykissdaily maximum≤ 0 pass=0;fail=1all yearEFF1
Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr O mykissmonthly median≤ 0 pass=0;fail=1all yearEFF1
Acute Mthd Survival Endpt, %Effect, Median TSTaHo R/nR Pass/Fail, StatR96hr O mykissdaily maximum≤ 50 % effectall yearEFF1
Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiadaily maximum≤ 0 pass=0;fail=1all yearEFF1
Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiamonthly median≤ 0 pass=0;fail=1all yearEFF1
Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiadaily maximum≤ 50 % effectall yearEFF1
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all yearINF1
Specific conductancemonthly averagereport only (umho/cm)all yearINF1
Specific conductancedaily maximumreport only (umho/cm)all yearINF1
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearINF1
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all yearINF1
pHinstantaneous minimumreport only (SU)all yearINF1
pHinstantaneous maximumreport only (SU)all yearINF1
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF1
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF1
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearINF1
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF1

How strict are these limits?

Cited limits by parameter: California's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/CA0078891 · MCP: https://passage-data.com/mcp