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Thousand Oaks, City of

Sewage treatment plant, major discharger, Camarillo, California. NPDES permit CA0056294, in force until Jul 31, 2031. Last 12 months: over a limit 2 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 32 days after each period: outfall EFF5 form A monthly (66 values), outfall INF1 form A monthly (9 values), outfall EFF5 form Q quarterly
Last report on file
July 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 63 reports late

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

Period endingParameterReportedLimitOver by
May 2026Chloride [as Cl], monthly average87378 lb/d≤ 17500 lb/d399%
July 2026Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelas, value1.52 pass=0;fail=1< 1 pass=0;fail=152%

Limits in force (107)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitinstantaneous maximum≤ 80 deg Fall yearEFF5
Turbidityinstantaneous maximum≤ 10 NTUall yearEFF5
Turbiditydaily average≤ 2 NTUall yearEFF5
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all yearEFF5
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/Lall yearEFF5
BOD, 5-day, 20 deg. Cweekly average≤ 30 mg/Lall yearEFF5
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall yearEFF5
BOD, 5-day, 20 deg. Cmonthly average≤ 2300 lb/dall yearEFF5
BOD, 5-day, 20 deg. Cdaily maximum≤ 5200 lb/dall yearEFF5
pHinstantaneous minimum≥ 6.5 SUall yearEFF5
pHinstantaneous maximum≤ 8.5 SUall yearEFF5
Solids, total suspendedmonthly average≤ 15 mg/Lall yearEFF5
Solids, total suspendedweekly average≤ 40 mg/Lall yearEFF5
Solids, total suspendeddaily maximum≤ 45 mg/Lall yearEFF5
Solids, total suspendedmonthly average≤ 1750 lb/dall yearEFF5
Solids, total suspendeddaily maximum≤ 5200 lb/dall yearEFF5
Solids, settleablemonthly average≤ .1 mL/Lall yearEFF5
Solids, settleabledaily maximum≤ .3 mL/Lall yearEFF5
Nitrogen, total [as N]daily maximumreport only (mg/L)all yearEFF5
Nitrogen, organic total [as N]daily maximumreport only (mg/L)all yearEFF5
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/Lall yearEFF5
Nitrogen, ammonia total [as N]daily maximum≤ 5.6 mg/Lall yearEFF5
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d)all yearEFF5
Nitrogen, nitrite total [as N]monthly average≤ 9 mg/Lall yearEFF5
Nitrogen, nitrate total [as N]monthly average≤ .9 mg/Lall yearEFF5
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all yearEFF5
Nitrite + Nitrate total [as N]monthly average≤ 9 mg/Lall yearEFF5
Phosphorus, total [as P]daily maximumreport only (mg/L)all yearEFF5
Cyanide, total [as CN]monthly average≤ 4.2 ug/Lall yearEFF5
Cyanide, total [as CN]daily maximum≤ 8.5 ug/Lall yearEFF5
Cyanide, total [as CN]monthly average≤ .49 lb/dall yearEFF5
Cyanide, total [as CN]daily maximum≤ .99 lb/dall yearEFF5
Sulfide, dissolved, [as S]daily maximumreport only (mg/L)all yearEFF5
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all yearEFF5
Chloride [as Cl]monthly average≤ 150 mg/Lall yearEFF5
Chloride [as Cl]monthly averagereport only (lb/d)all yearEFF5
Sulfate, total [as SO4]monthly average≤ 250 mg/Lall yearEFF5
Sulfate, total [as SO4]monthly averagereport only (lb/d)all yearEFF5
Iron, total recoverabledaily maximumreport only (ug/L)all yearEFF5
Selenium, total recoverablemonthly average≤ 3 ug/Lall yearEFF5
Selenium, total recoverabledaily maximum≤ 5 ug/Lall yearEFF5
Selenium, total recoverablemonthly average≤ .4 lb/dall yearEFF5
Selenium, total recoverabledaily maximum≤ .6 lb/dall yearEFF5
Boron, total recoverablemonthly averagereport only (mg/L)all yearEFF5
Nickel, total recoverablemonthly average≤ 153 ug/Lall yearEFF5
Nickel, total recoverabledaily maximum≤ 231 ug/Lall yearEFF5
Nickel, total recoverabledaily maximum≤ .3 lb/dall yearEFF5
Zinc, total recoverabledaily maximumreport only (ug/L)all yearEFF5
Copper, total recoverablemonthly average≤ 6 ug/Lall yearEFF5
Copper, total recoverabledaily maximum≤ 9 ug/Lall yearEFF5
Copper, total recoverabledaily maximum≤ .7 lb/dall yearEFF5
Oil and greasemonthly average≤ 10 mg/Lall yearEFF5
Oil and greasedaily maximum≤ 15 mg/Lall yearEFF5
Oil and greasemonthly average≤ 1200 lb/dall yearEFF5
Oil and greasedaily maximum≤ 1750 lb/dall yearEFF5
Phosphate, ortho [as P]daily maximumreport only (mg/L)all yearEFF5
Dichlorobromomethanedaily maximumreport only (ug/L)all yearEFF5
Bromoformdaily maximumreport only (ug/L)all yearEFF5
Dibromochloromethanedaily maximumreport only (ug/L)all yearEFF5
Chloroformdaily maximumreport only (ug/L)all yearEFF5
Surfactants, as CTAS, effluentdaily maximumreport only (mg/L)all yearEFF5
Surfactants [MBAS]monthly average≤ .5 mg/Lall yearEFF5
Surfactants [MBAS]monthly average≤ 60 lb/dall yearEFF5
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ 4 mg/Lall yearEFF5
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ .46 lb/dall yearEFF5
4,4'-DDTmonthly average≤ .00059 ug/Lall yearEFF5
4,4'-DDTdaily maximum≤ .0012 ug/Lall yearEFF5
4,4'-DDDmonthly average≤ .00084 ug/Lall yearEFF5
4,4'-DDDdaily maximum≤ .0017 ug/Lall yearEFF5
4,4'-DDEmonthly average≤ .00059 ug/Lall yearEFF5
4,4'-DDEdaily maximum≤ .0012 ug/Lall yearEFF5
Chlordane [tech mix. and metabolites]monthly average≤ .00059 ug/Lall yearEFF5
Chlordane [tech mix. and metabolites]daily maximum≤ .0012 ug/Lall yearEFF5
Dieldrinmonthly average≤ .00014 ug/Lall yearEFF5
Dieldrindaily maximum≤ .00028 ug/Lall yearEFF5
Toxaphenemonthly average≤ .00016 ug/Lall yearEFF5
Toxaphenedaily maximum≤ .00033 ug/Lall yearEFF5
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearEFF5
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearEFF5
Chlorine, total residualdaily maximum≤ .1 mg/Lall yearEFF5
Chlorine, total residualdaily maximum≤ 10 lb/dall yearEFF5
E. colimonthly averagereport only (CFU/100mL)all yearEFF5
E. colidaily maximumreport only (CFU/100mL)all yearEFF5
Flow, totaltotalreport only (Mgal)all yearEFF5
Turbidity, time above limitmaximum≤ 72 min/dall yearEFF5
Solids, total dissolvedmonthly average≤ 850 mg/Lall yearEFF5
Solids, total dissolvedmonthly averagereport only (lb/d)all yearEFF5
Mercury, total recoverabledaily maximumreport only (ug/L)all yearEFF5
Mercury, total recoverablemonthly average≤ .022 lb/moall yearEFF5
Coliform, total generalinstantaneous maximum≤ 240 CFU/100mLall yearEFF5
Coliform, total general7-day median≤ 2.2 CFU/100mLall yearEFF5
BOD, 5-day, percent removalmonthly minimum≥ 85 %all yearEFF5
Solids, suspended percent removalmonthly minimum≥ 85 %all yearEFF5
Trihalomethane, tot.daily maximumreport only (ug/L)all yearEFF5
PFAS Sumdaily maximumreport only (ng/L)all yearEFF5
Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasdaily maximum≤ 0 pass=0;fail=1all yearEFF5
Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasmonthly median≤ 0 pass=0;fail=1all yearEFF5
Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasdaily maximum≤ 50 % effectall yearEFF5
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)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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Your permit document is the final word. As JSON: /api/v1/permits/CA0056294 · MCP: https://passage-data.com/mcp