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Carpinteria Sanitary District

Sewage treatment plant, major discharger, Carpinteria, California. NPDES permit CA0047364 expired Sep 20, 2022; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 32 days after each period: outfall 001 form A monthly (88 values), outfall 001 form Q quarterly (12 values), outfall INF form A monthly (24 values), outfall 001 form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 29 reports late

Limits in force (279)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitinstantaneous minimumreport only (deg F)all year001
Temperature, water deg. fahrenheitinstantaneous minimumreport only (deg F)all year001
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all year001
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all year001
Turbiditymonthly average≤ 75 NTUall year001
Turbiditymonthly average≤ 75 NTUall year001
Turbidityweekly average≤ 100 NTUall year001
Turbidityweekly average≤ 100 NTUall year001
Turbidityinstantaneous maximum≤ 225 NTUall year001
Turbidityinstantaneous maximum≤ 225 NTUall year001
Radioactivitydaily maximumreport only (pCi/L)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 90 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 90 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 630 lb/dall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 630 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 940 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 940 lb/dall year001
pHminimum≥ 6 SUall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendeddaily maximum≤ 90 mg/Lall year001
Solids, total suspendeddaily maximum≤ 90 mg/Lall year001
Solids, total suspendedmonthly average≤ 630 lb/dall year001
Solids, total suspendedmonthly average≤ 630 lb/dall year001
Solids, total suspendedweekly average≤ 940 lb/dall year001
Solids, total suspendedweekly average≤ 940 lb/dall year001
Solids, settleablemonthly average≤ 1 mL/Lall year001
Solids, settleablemonthly average≤ 1 mL/Lall year001
Solids, settleableweekly average≤ 1.5 mL/Lall year001
Solids, settleableweekly average≤ 1.5 mL/Lall year001
Solids, settleableinstantaneous maximum≤ 3 mL/Lall year001
Solids, settleableinstantaneous maximum≤ 3 mL/Lall year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Cyanide, total [as CN]6-month median≤ 94 ug/Lall year001
Cyanide, total [as CN]instantaneous maximum≤ 940 ug/Lall year001
Cyanide, total [as CN]6-month median≤ 2 lb/dall year001
Cyanide, total [as CN]instantaneous maximum≤ 20 lb/dall year001
Arsenic, total recoverabledaily maximumreport only (ug/L)all year001
Selenium, total recoverabledaily maximumreport only (ug/L)all year001
Thallium, total recoverablemonthly average≤ 190 ug/Lall year001
Thallium, total recoverablemonthly average≤ 3.9 lb/dall year001
Beryllium, total recoverable [as Be]monthly average≤ 3.1 ug/Lall year001
Beryllium, total recoverable [as Be]monthly average≤ .065 lb/dall year001
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all year001
Chromium, trivalent [as Cr]monthly average≤ 18000000 ug/Lall year001
Chromium, trivalent [as Cr]monthly average≤ 370000 lb/dall year001
Nickel, total recoverabledaily maximumreport only (ug/L)all year001
Silver total recoverabledaily maximumreport only (ug/L)all year001
Zinc, total recoverabledaily maximumreport only (ug/L)all year001
Cadmium, total recoverabledaily maximumreport only (ug/L)all year001
Lead, total recoverabledaily maximumreport only (ug/L)all year001
Copper, total recoverabledaily maximumreport only (ug/L)all year001
Antimony, total recoverabledaily maximumreport only (ug/L)all year001
Oil and greasemonthly average≤ 25 mg/Lall year001
Oil and greasemonthly average≤ 25 mg/Lall year001
Oil and greaseweekly average≤ 40 mg/Lall year001
Oil and greaseweekly average≤ 40 mg/Lall year001
Oil and greaseinstantaneous maximum≤ 75 mg/Lall year001
Oil and greaseinstantaneous maximum≤ 75 mg/Lall year001
Oil and greasemonthly average≤ 520 lb/dall year001
Oil and greasemonthly average≤ 520 lb/dall year001
Oil and greaseweekly average≤ 830 lb/dall year001
Oil and greaseweekly average≤ 830 lb/dall year001
2-Methyl-4,6-dinitrophenolmonthly average≤ 21000 ug/Lall year001
2-Methyl-4,6-dinitrophenolmonthly average≤ 430 lb/dall year001
Tributyltinmonthly average≤ .13 ug/Lall year001
Tributyltinmonthly average≤ .0027 lb/dall year001
Polynuclear Aromatic Hydrocarbons [PAHs]monthly average≤ .83 ug/Lall year001
Polynuclear Aromatic Hydrocarbons [PAHs]monthly average≤ .017 lb/dall year001
Dichlorobromomethanemonthly average≤ 580 ug/Lall year001
Dichlorobromomethanemonthly average≤ 12 lb/dall year001
Carbon tetrachloridemonthly average≤ 85 ug/Lall year001
Carbon tetrachloridemonthly average≤ 1.8 lb/dall year001
1,2-Dichloroethanemonthly average≤ 2600 ug/Lall year001
1,2-Dichloroethanemonthly average≤ 55 lb/dall year001
Dibromochloromethanedaily maximumreport only (ug/L)all year001
Chloroformmonthly average≤ 12000 ug/Lall year001
Chloroformmonthly average≤ 260 lb/dall year001
Toluenemonthly average≤ 8000000 ug/Lall year001
Toluenemonthly average≤ 170000 lb/dall year001
Benzenemonthly average≤ 550 ug/Lall year001
Benzenemonthly average≤ 12 lb/dall year001
Acroleinmonthly average≤ 21000 ug/Lall year001
Acroleinmonthly average≤ 430 lb/dall year001
Acrylonitrilemonthly average≤ 9.4 ug/Lall year001
Acrylonitrilemonthly average≤ .2 lb/dall year001
Bis[2-chloroethyl] ethermonthly average≤ 4.2 ug/Lall year001
Bis[2-chloroethyl] ethermonthly average≤ .088 lb/dall year001
Bis[2-chloroethoxy]methanemonthly average≤ 410 ug/Lall year001
Bis[2-chloroethoxy]methanemonthly average≤ 8.6 lb/dall year001
Bis[2-chloroisopropyl] ethermonthly average≤ 110000 ug/Lall year001
Bis[2-chloroisopropyl] ethermonthly average≤ 2400 lb/dall year001
Chlorobenzenemonthly average≤ 54000 ug/Lall year001
Chlorobenzenemonthly average≤ 1100 lb/dall year001
Diethyl phthalatemonthly average≤ 3102000 ug/Lall year001
Diethyl phthalatemonthly average≤ 65000 lb/dall year001
Dimethyl phthalatemonthly average≤ 77000000 ug/Lall year001
Dimethyl phthalatemonthly average≤ 1600000 lb/dall year001
1,2-Diphenylhydrazinemonthly average≤ 15 ug/Lall year001
1,2-Diphenylhydrazinemonthly average≤ .31 lb/dall year001
Ethylbenzenemonthly average≤ 390000 ug/Lall year001
Ethylbenzenemonthly average≤ 8000 lb/dall year001
Fluoranthenemonthly average≤ 1400 ug/Lall year001
Fluoranthenemonthly average≤ 29 lb/dall year001
Hexachlorocyclopentadienemonthly average≤ 5400 ug/Lall year001
Hexachlorocyclopentadienemonthly average≤ 110 lb/dall year001
Hexachlorobutadienemonthly average≤ 1300 ug/Lall year001
Hexachlorobutadienemonthly average≤ 27 lb/dall year001
Hexachloroethanemonthly average≤ 240 ug/Lall year001
Hexachloroethanemonthly average≤ 4.9 lb/dall year001
Isophoronemonthly average≤ 69000 ug/Lall year001
Isophoronemonthly average≤ 1400 lb/dall year001
Methylene chloridemonthly average≤ 42000 ug/Lall year001
Methylene chloridemonthly average≤ 880 lb/dall year001
N-Nitrosodi-N-propylaminemonthly average≤ 36 ug/Lall year001
N-Nitrosodi-N-propylaminemonthly average≤ .74 lb/dall year001
N-Nitrosodiphenylaminemonthly average≤ 240 ug/Lall year001
N-Nitrosodiphenylaminemonthly average≤ 4.9 lb/dall year001
N-Nitrosodimethylamine [NDMA]monthly average≤ 690 ug/Lall year001
N-Nitrosodimethylamine [NDMA]monthly average≤ 14 lb/dall year001
Nitrobenzenemonthly average≤ 460 ug/Lall year001
Nitrobenzenemonthly average≤ 9.6 lb/dall year001
Tetrachloroethylenemonthly average≤ 190 ug/Lall year001
Tetrachloroethylenemonthly average≤ 3.9 lb/dall year001
1,1-Dichloroethylenemonthly average≤ 85 ug/Lall year001
1,1-Dichloroethylenemonthly average≤ 1.8 lb/dall year001
1,1,1-Trichloroethanemonthly average≤ 51000000 ug/Lall year001
1,1,1-Trichloroethanemonthly average≤ 1100000 lb/dall year001
1,1,2-Trichloroethanemonthly average≤ 880 ug/Lall year001
1,1,2-Trichloroethanemonthly average≤ 18 lb/dall year001
1,1,2,2-Tetrachloroethanemonthly average≤ 220 ug/Lall year001
1,1,2,2-Tetrachloroethanemonthly average≤ 4.5 lb/dall year001
1,4-Dichlorobenzenemonthly average≤ 1700 ug/Lall year001
1,4-Dichlorobenzenemonthly average≤ 35 lb/dall year001
2,4-Dinitrotoluenemonthly average≤ 240 ug/Lall year001
2,4-Dinitrotoluenemonthly average≤ 5.1 lb/dall year001
2,4-Dinitrophenolmonthly average≤ 380 ug/Lall year001
2,4-Dinitrophenolmonthly average≤ 7.8 lb/dall year001
2,4,6-Trichlorophenolmonthly average≤ 27 ug/Lall year001
2,4,6-Trichlorophenolmonthly average≤ .57 lb/dall year001
3,3'-Dichlorobenzidinemonthly average≤ .76 ug/Lall year001
3,3'-Dichlorobenzidinemonthly average≤ .016 lb/dall year001
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ 330 ug/Lall year001
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ 6.9 lb/dall year001
Di-n-butyl phthalatedaily maximumreport only (ug/L)all year001
Benzidinemonthly average≤ .0065 ug/Lall year001
Benzidinemonthly average≤ .00014 lb/dall year001
Vinyl chloridemonthly average≤ 3400 ug/Lall year001
Vinyl chloridemonthly average≤ 71 lb/dall year001
Trichloroethylenemonthly average≤ 2500 ug/Lall year001
Trichloroethylenemonthly average≤ 53 lb/dall year001
Aldrinmonthly average≤ .0021 ug/Lall year001
Aldrinmonthly average≤ .000043 lb/dall year001
Chlordane [tech mix. and metabolites]monthly average≤ .0022 ug/Lall year001
Chlordane [tech mix. and metabolites]monthly average≤ .000045 lb/dall year001
DDT/DDD/DDE, sum of p,p' & o,p' isomersmonthly average≤ .016 ug/Lall year001
DDT/DDD/DDE, sum of p,p' & o,p' isomersmonthly average≤ .00033 lb/dall year001
Dieldrinmonthly average≤ .0038 ug/Lall year001
Dieldrinmonthly average≤ .000078 lb/dall year001
Endosulfan, total6-month median≤ .85 ug/Lall year001
Endosulfan, totalinstantaneous maximum≤ 2.5 ug/Lall year001
Endosulfan, total6-month median≤ .018 lb/dall year001
Endosulfan, totalinstantaneous maximum≤ .053 lb/dall year001
Endrin6-month median≤ .19 ug/Lall year001
Endrininstantaneous maximum≤ .56 ug/Lall year001
Endrin6-month median≤ .0039 lb/dall year001
Endrininstantaneous maximum≤ .012 lb/dall year001
Toxaphenemonthly average≤ .02 ug/Lall year001
Toxaphenemonthly average≤ .00041 lb/dall year001
Heptachlormonthly average≤ .0047 ug/Lall year001
Heptachlormonthly average≤ .000098 lb/dall year001
Heptachlor epoxidemonthly average≤ .0019 ug/Lall year001
Heptachlor epoxidemonthly average≤ .000039 lb/dall year001
Hexachlorobenzenemonthly average≤ .02 ug/Lall year001
Hexachlorobenzenemonthly average≤ .00041 lb/dall year001
Flow, in conduit or thru treatment planttotalreport only (MGD)all year001
Flow, in conduit or thru treatment planttotalreport only (MGD)all year001
Flow, in conduit or thru treatment plantinstantaneous maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantinstantaneous maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantmeanreport only (MGD)all year001
Flow, in conduit or thru treatment plantmeanreport only (MGD)all year001
Chlorine, total residual6-month median≤ 190 ug/Lall year001
Chlorine, total residual6-month median≤ 190 ug/Lall year001
Chlorine, total residualinstantaneous maximum≤ 5600 ug/Lall year001
Chlorine, total residualinstantaneous maximum≤ 5600 ug/Lall year001
Chlorine, total residualdaily maximum≤ 750 ug/Lall year001
Chlorine, total residualdaily maximum≤ 750 ug/Lall year001
Chlorine, total residual6-month median≤ 3.9 lb/dall year001
Chlorine, total residual6-month median≤ 3.9 lb/dall year001
Chlorine, total residualinstantaneous maximum≤ 120 lb/dall year001
Chlorine, total residualinstantaneous maximum≤ 120 lb/dall year001
Chlorine, total residualdaily maximum≤ 16 lb/dall year001
Chlorine, total residualdaily maximum≤ 16 lb/dall year001
Polychlorinated biphenyls [PCBs], sum of Aroclorsmonthly average≤ .0018 ug/Lall year001
Polychlorinated biphenyls [PCBs], sum of Aroclorsmonthly average≤ .000037 lb/dall year001
Mercury, total recoverabledaily maximumreport only (ug/L)all year001
Phenols, chlorinated6-month median≤ 94 ug/Lall year001
Phenols, chlorinatedinstantaneous maximum≤ 940 ug/Lall year001
Phenols, chlorinated6-month median≤ 2 lb/dall year001
Phenols, chlorinatedinstantaneous maximum≤ 20 lb/dall year001
Coliform, fecal generalmonthly averagereport only (MPN/100mL)all year001
Coliform, fecal generalmonthly averagereport only (MPN/100mL)all year001
Coliform, fecal generaldaily maximumreport only (MPN/100mL)all year001
Coliform, fecal generaldaily maximumreport only (MPN/100mL)all year001
Coliform, total general7-day median≤ 23 MPN/100mLall year001
Coliform, total general7-day median≤ 23 MPN/100mLall year001
Coliform, total generalinstantaneous maximum≤ 2300 MPN/100mLall year001
Coliform, total generalinstantaneous maximum≤ 2300 MPN/100mLall year001
1,3-Dichloropropenemonthly average≤ 840 ug/Lall year001
1,3-Dichloropropenemonthly average≤ 17 lb/dall year001
Hexachlorocyclohexane, total6-month median≤ .38 ug/Lall year001
Hexachlorocyclohexane, totalinstantaneous maximum≤ 1.1 ug/Lall year001
Hexachlorocyclohexane, total6-month median≤ .0078 lb/dall year001
Hexachlorocyclohexane, totalinstantaneous maximum≤ .024 lb/dall year001
Phenolic compounds, unchlorinated6-month median≤ 2800 ug/Lall year001
Phenolic compounds, unchlorinatedinstantaneous maximum≤ 28000 ug/Lall year001
Phenolic compounds, unchlorinated6-month median≤ 59 lb/dall year001
Phenolic compounds, unchlorinatedinstantaneous maximum≤ 590 lb/dall year001
Halomethanesdaily maximumreport only (ug/L)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Chlorine usagemonthly averagereport only (lb/d)all year001
Chlorine usagemonthly averagereport only (lb/d)all year001
Chlorine usagedaily maximumreport only (lb/d)all year001
Chlorine usagedaily maximumreport only (lb/d)all year001
Dichlorobenzenemonthly average≤ 480000 ug/Lall year001
Dichlorobenzenemonthly average≤ 10000 lb/dall year001
TCDD equivalentsmonthly average≤ .00000037 ug/Lall year001
TCDD equivalentsmonthly average≤ .0000076 Tthlb/dall year001
TU Static 72Hr Chronic Strongyl. purpuratusdaily maximum≤ 94 tox chronicall year001
Static 72Hr Chronic Dendraster excentricusdaily maximum≤ 94 tox chronicall year001
TU Static 48Hr Chronic Macrocystis pyriferadaily maximum≤ 94 tox chronicall year001
TU Static 48Hr Chronic Crassostrea gigasdaily maximum≤ 94 tox chronicall year001
TU Static 48Hr Chronic Haliotis rufescensdaily maximum≤ 94 tox chronicall year001
Static 48Hr Chronic Mytilis Speciesdaily maximum≤ 94 tox chronicall year001
TU Static Renewal 7-Day Chronic Americamysis bahia (formerly Mysidopsis bahia)daily maximum≤ 94 tox chronicall year001
TU Static Renewal 7-Day Chronic Holmesimysis costatadaily maximum≤ 94 tox chronicall year001
TU Static Renewal 7-Day Chronic Menidia beryllinadaily maximum≤ 94 tox chronicall year001
Toxic Units Static Renewal 7-Day Chronic Atherinops affinis daily maximum≤ 94 tox chronicall year001
TU Static 20Min Chronic Strongyl. purpuratusdaily maximum≤ 94 tox chronicall year001
Static 20Min Chronic Dendraster excentricusdaily maximum≤ 94 tox chronicall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearINF
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearINF
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all yearINF
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all yearINF
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all yearINF
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all yearINF
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all yearINF
BOD, 5-day, 20 deg. Cdaily maximumreport only (lb/d)all yearINF
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF
Solids, total suspendedmonthly averagereport only (lb/d)all yearINF
Solids, total suspendedmonthly averagereport only (lb/d)all yearINF
Solids, total suspendeddaily maximumreport only (lb/d)all yearINF
Solids, total suspendeddaily maximumreport only (lb/d)all yearINF
Flow, in conduit or thru treatment planttotalreport only (MGD)all yearINF
Flow, in conduit or thru treatment planttotalreport only (MGD)all yearINF
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF
Flow, in conduit or thru treatment plantinstantaneous maximumreport only (MGD)all yearINF
Flow, in conduit or thru treatment plantinstantaneous maximumreport only (MGD)all yearINF
Flow, in conduit or thru treatment plantmeanreport only (MGD)all yearINF
Flow, in conduit or thru treatment plantmeanreport only (MGD)all yearINF

How strict are these limits?

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

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