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Montecito Sanitary District

Sewage treatment plant, major discharger, Santa Barbara, California. NPDES permit CA0047899, in force until Oct 31, 2027. Last 12 months: over a limit once (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 32 days after each period: outfall 001 form A monthly (45 values), outfall 001 form Q quarterly (12 values), outfall INF form A monthly (5 values), outfall 001 form Y yearly
Renewal application due
May 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 2 required values missing, 0 of 29 reports late

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

Period endingParameterReportedLimit
April 2026Coliform, total general, instantaneous maximum> 16000 MPN/100mL≤ 2300 MPN/100mL

Limits in force (251)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all year001
Turbiditymonthly average≤ 75 NTUall year001
Turbidityweekly average≤ 100 NTUall year001
Turbidityinstantaneous maximum≤ 225 NTUall year001
Radioactivitydaily maximumreport only (pCi/L)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendeddaily maximum≤ 90 mg/Lall year001
Solids, total suspendedmonthly average≤ 380 lb/dall year001
Solids, total suspendedweekly average≤ 560 lb/dall year001
Solids, total suspendeddaily maximum≤ 1100 lb/dall year001
Solids, settleablemonthly average≤ 1 mL/Lall year001
Solids, settleableweekly average≤ 1.5 mL/Lall year001
Solids, settleableinstantaneous maximum≤ 3 mL/Lall year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Cyanide, total [as CN]6-month median≤ 90 ug/Lall year001
Cyanide, total [as CN]daily maximum≤ 360 ug/Lall year001
Cyanide, total [as CN]instantaneous maximum≤ 900 ug/Lall year001
Cyanide, total [as CN]6-month median≤ 1.1 lb/dall year001
Cyanide, total [as CN]daily maximum≤ 4.5 lb/dall year001
Cyanide, total [as CN]instantaneous maximum≤ 11 lb/dall year001
Arsenic, total recoverabledaily maximumreport only (ug/L)all year001
Selenium, total recoverabledaily maximumreport only (ug/L)all year001
Thallium, total recoverable30-day average≤ 180 ug/Lall year001
Thallium, total recoverable30-day average≤ 2.3 lb/dall year001
Beryllium, total recoverable [as Be]30-day average≤ 3 ug/Lall year001
Beryllium, total recoverable [as Be]30-day average≤ .037 lb/dall year001
Chromium, hexavalent [as Cr]daily maximumreport only (ug/L)all year001
Chromium, trivalent [as Cr]30-day average≤ 17000000 ug/Lall year001
Chromium, trivalent [as Cr]30-day average≤ 210000 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
Cadmium, total recoverabledaily maximumreport only (lb/d)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 greaseweekly average≤ 40 mg/Lall year001
Oil and greasedaily maximum≤ 75 mg/Lall year001
Oil and greasemonthly average≤ 310 lb/dall year001
Oil and greaseweekly average≤ 500 lb/dall year001
Oil and greaseinstantaneous maximum≤ 940 lb/dall year001
2-Methyl-4,6-dinitrophenol30-day average≤ 20000 ug/Lall year001
2-Methyl-4,6-dinitrophenol30-day average≤ 250 lb/dall year001
Tributyltin30-day average≤ .13 ug/Lall year001
Tributyltin30-day average≤ .0016 lb/dall year001
Polynuclear Aromatic Hydrocarbons [PAHs]30-day average≤ .79 ug/Lall year001
Polynuclear Aromatic Hydrocarbons [PAHs]30-day average≤ .0099 lb/dall year001
Dichlorobromomethanedaily maximumreport only (ug/L)all year001
Carbon tetrachloride30-day average≤ 81 ug/Lall year001
Carbon tetrachloride30-day average≤ 1 lb/dall year001
1,2-Dichloroethane30-day average≤ 2500 ug/Lall year001
1,2-Dichloroethane30-day average≤ 32 lb/dall year001
Bromoformdaily maximumreport only (ug/L)all year001
Bromoformdaily maximumreport only (ug/L)all year001
Dibromochloromethanedaily maximumreport only (ug/L)all year001
Chloroformdaily maximumreport only (ug/L)all year001
Toluene30-day average≤ 7700000 ug/Lall year001
Toluene30-day average≤ 96000 lb/dall year001
Benzene30-day average≤ 530 ug/Lall year001
Benzene30-day average≤ 6.6 lb/dall year001
Acrolein30-day average≤ 20000 ug/Lall year001
Acrolein30-day average≤ 250 lb/dall year001
Acrylonitrile30-day average≤ 9 ug/Lall year001
Acrylonitrile30-day average≤ .11 lb/dall year001
Bis[2-chloroethyl] ether30-day average≤ 4.1 ug/Lall year001
Bis[2-chloroethyl] ether30-day average≤ .051 lb/dall year001
Bis[2-chloroethoxy]methane30-day average≤ 400 ug/Lall year001
Bis[2-chloroethoxy]methane30-day average≤ 5 lb/dall year001
Bis[2-chloroisopropyl] ether30-day average≤ 110000 ug/Lall year001
Bis[2-chloroisopropyl] ether30-day average≤ 1400 lb/dall year001
Chlorobenzene30-day average≤ 51000 ug/Lall year001
Chlorobenzene30-day average≤ 640 lb/dall year001
Diethyl phthalate30-day average≤ 2300000 ug/Lall year001
Diethyl phthalate30-day average≤ 37000 lb/dall year001
Dimethyl phthalate30-day average≤ 74000000 ug/Lall year001
Dimethyl phthalate30-day average≤ 920000 lb/dall year001
1,2-Diphenylhydrazine30-day average≤ 14 ug/Lall year001
1,2-Diphenylhydrazine30-day average≤ .18 lb/dall year001
Ethylbenzene30-day average≤ 370000 ug/Lall year001
Ethylbenzene30-day average≤ 4600 lb/dall year001
Fluoranthene30-day average≤ 1400 ug/Lall year001
Fluoranthene30-day average≤ 17 lb/dall year001
Hexachlorocyclopentadiene30-day average≤ 5200 ug/Lall year001
Hexachlorocyclopentadiene30-day average≤ 65 lb/dall year001
Hexachlorobutadiene30-day average≤ 1300 ug/Lall year001
Hexachlorobutadiene30-day average≤ 16 lb/dall year001
Hexachloroethane30-day average≤ 230 ug/Lall year001
Hexachloroethane30-day average≤ 2.8 lb/dall year001
Isophorone30-day average≤ 66000 ug/Lall year001
Isophorone30-day average≤ 820 lb/dall year001
Methyl bromide [Bromomethane]daily maximumreport only (ug/L)all year001
Methyl bromide [Bromomethane]daily maximumreport only (ug/L)all year001
Methyl chloride [Chloromethane]daily maximumreport only (ug/L)all year001
Methyl chloride [Chloromethane]daily maximumreport only (ug/L)all year001
Methylene chloride30-day average≤ 41000 ug/Lall year001
Methylene chloride30-day average≤ 510 lb/dall year001
N-Nitrosodi-N-propylamine30-day average≤ 34 ug/Lall year001
N-Nitrosodi-N-propylamine30-day average≤ .43 lb/dall year001
N-Nitrosodiphenylamine30-day average≤ 230 ug/Lall year001
N-Nitrosodiphenylamine30-day average≤ 2.8 lb/dall year001
N-Nitrosodimethylamine [NDMA]30-day average≤ 660 ug/Lall year001
N-Nitrosodimethylamine [NDMA]30-day average≤ 8.2 lb/dall year001
Nitrobenzene30-day average≤ 440 ug/Lall year001
Nitrobenzene30-day average≤ 5.5 lb/dall year001
Tetrachloroethylene30-day average≤ 180 ug/Lall year001
Tetrachloroethylene30-day average≤ 2.3 lb/dall year001
1,1-Dichloroethylene30-day average≤ 81 ug/Lall year001
1,1-Dichloroethylene30-day average≤ 1 lb/dall year001
1,1,1-Trichloroethane30-day average≤ 49000000 ug/Lall year001
1,1,1-Trichloroethane30-day average≤ 610000 lb/dall year001
1,1,2-Trichloroethane30-day average≤ 850 ug/Lall year001
1,1,2-Trichloroethane30-day average≤ 11 lb/dall year001
1,1,2,2-Tetrachloroethane30-day average≤ 210 ug/Lall year001
1,1,2,2-Tetrachloroethane30-day average≤ 2.6 lb/dall year001
1,4-Dichlorobenzene30-day average≤ 1600 ug/Lall year001
1,4-Dichlorobenzene30-day average≤ 20 lb/dall year001
2,4-Dinitrotoluene30-day average≤ 230 ug/Lall year001
2,4-Dinitrotoluene30-day average≤ 2.9 lb/dall year001
2,4-Dinitrophenol30-day average≤ 360 ug/Lall year001
2,4-Dinitrophenol30-day average≤ 4.5 lb/dall year001
2,4,6-Trichlorophenol30-day average≤ 26 ug/Lall year001
2,4,6-Trichlorophenol30-day average≤ .33 lb/dall year001
3,3'-Dichlorobenzidine30-day average≤ .73 ug/Lall year001
3,3'-Dichlorobenzidine30-day average≤ .0091 lb/dall year001
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L)all year001
Di-n-butyl phthalate30-day average≤ 320000 ug/Lall year001
Di-n-butyl phthalate30-day average≤ 3900 lb/dall year001
Benzidine30-day average≤ .0062 ug/Lall year001
Benzidine30-day average≤ .000078 lb/dall year001
Vinyl chloride30-day average≤ 3200 ug/Lall year001
Vinyl chloride30-day average≤ 41 lb/dall year001
Trichloroethylene30-day average≤ 2400 ug/Lall year001
Trichloroethylene30-day average≤ 30 lb/dall year001
Aldrin30-day average≤ .002 ug/Lall year001
Aldrin30-day average≤ .000025 lb/dall year001
Chlordane [tech mix. and metabolites]30-day average≤ .0021 ug/Lall year001
Chlordane [tech mix. and metabolites]30-day average≤ .000026 lb/dall year001
DDT/DDD/DDE, sum of p,p' & o,p' isomers30-day average≤ .015 ug/Lall year001
DDT/DDD/DDE, sum of p,p' & o,p' isomers30-day average≤ .00019 lb/dall year001
Dieldrin30-day average≤ .0036 ug/Lall year001
Dieldrin30-day average≤ .000045 lb/dall year001
Endosulfan, total6-month median≤ .81 ug/Lall year001
Endosulfan, totaldaily maximum≤ 1.6 ug/Lall year001
Endosulfan, totalinstantaneous maximum≤ 2.4 ug/Lall year001
Endosulfan, total6-month median≤ .01 lb/dall year001
Endosulfan, totaldaily maximum≤ .02 lb/dall year001
Endosulfan, totalinstantaneous maximum≤ .03 lb/dall year001
Endrin6-month median≤ .18 ug/Lall year001
Endrindaily maximum≤ .36 ug/Lall year001
Endrininstantaneous maximum≤ .54 ug/Lall year001
Endrin6-month median≤ .0023 lb/dall year001
Endrindaily maximum≤ .0045 lb/dall year001
Endrininstantaneous maximum≤ .0068 lb/dall year001
Toxaphene30-day average≤ .019 ug/Lall year001
Toxaphene30-day average≤ .00024 lb/dall year001
Heptachlor30-day average≤ .0045 ug/Lall year001
Heptachlor30-day average≤ .000056 lb/dall year001
Heptachlor epoxide30-day average≤ .0018 ug/Lall year001
Heptachlor epoxide30-day average≤ .000023 lb/dall year001
Polychlorinated biphenyls [PCBs]30-day average≤ .0017 ug/Lall year001
Polychlorinated biphenyls [PCBs]30-day average≤ .000021 lb/dall year001
Hexachlorobenzene30-day average≤ .019 ug/Lall year001
Hexachlorobenzene30-day average≤ .00024 lb/dall year001
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residual6-month median≤ 180 ug/Lall year001
Chlorine, total residualdaily maximum≤ 720 ug/Lall year001
Chlorine, total residualinstantaneous maximum≤ 5400 ug/Lall year001
Chlorine, total residual6-month median≤ 2.2 lb/dall year001
Chlorine, total residualdaily maximum≤ 9 lb/dall year001
Chlorine, total residualinstantaneous maximum≤ 68 lb/dall year001
Flow, totaltotalreport only (Mgal)all year001
Mercury, total recoverabledaily maximumreport only (ug/L)all year001
Phenols, chlorinated6-month median≤ 90 ug/Lall year001
Phenols, chlorinateddaily maximum≤ 360 ug/Lall year001
Phenols, chlorinatedinstantaneous maximum≤ 900 ug/Lall year001
Phenols, chlorinated6-month median≤ 1.1 lb/dall year001
Phenols, chlorinateddaily maximum≤ 4.5 lb/dall year001
Phenols, chlorinatedinstantaneous maximum≤ 11 lb/dall year001
Coliform, fecal generalmonthly averagereport 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 generalinstantaneous maximum≤ 2300 MPN/100mLall year001
1,3-Dichloropropene30-day average≤ 800 ug/Lall year001
1,3-Dichloropropene30-day average≤ 10 lb/dall year001
Hexachlorocyclohexane, total6-month median≤ .36 ug/Lall year001
Hexachlorocyclohexane, totaldaily maximum≤ .72 ug/Lall year001
Hexachlorocyclohexane, totalinstantaneous maximum≤ 1.1 ug/Lall year001
Hexachlorocyclohexane, total6-month median≤ .0045 lb/dall year001
Hexachlorocyclohexane, totaldaily maximum≤ .009 lb/dall year001
Hexachlorocyclohexane, totalinstantaneous maximum≤ .014 lb/dall year001
Phenolic compounds, unchlorinated6-month median≤ 2700 ug/Lall year001
Phenolic compounds, unchlorinateddaily maximum≤ 11000 ug/Lall year001
Phenolic compounds, unchlorinatedinstantaneous maximum≤ 27000 ug/Lall year001
Phenolic compounds, unchlorinated6-month median≤ 34 lb/dall year001
Phenolic compounds, unchlorinateddaily maximum≤ 140 lb/dall year001
Phenolic compounds, unchlorinatedinstantaneous maximum≤ 340 lb/dall year001
Halomethanes30-day average≤ 12000 ug/Lall year001
Halomethanes30-day average≤ 12000 ug/Lall year001
Halomethanesdaily maximumreport only (ug/L)all year001
Halomethanesdaily maximumreport only (ug/L)all year001
Halomethanes30-day average≤ 150 lb/dall year001
Halomethanes30-day average≤ 150 lb/dall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 85 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 310 lb/dall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 500 lb/dall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 1100 lb/dall year001
BOD, carb-5 day, 20 deg C, 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 usagedaily maximumreport only (lb/d)all year001
Dichlorobenzene30-day average≤ 460000 ug/Lall year001
Dichlorobenzene30-day average≤ 5700 lb/dall year001
TCDD equivalents30-day average≤ .00035 ng/Lall year001
TCDD equivalents30-day average≤ .0000044 Tthlb/dall year001
TU Static 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia)daily maximumreport only (tox acute)all year001
Static 96Hr Acute Holmesimysis costatadaily maximumreport only (tox acute)all year001
TU Static 96Hr Acute Cyprinodon variegatusdaily maximumreport only (tox acute)all year001
TU Static 96Hr Acute Medinia beryllinadaily maximumreport only (tox acute)all year001
TU Static 48Hr Chronic Macrocystis pyriferaaveragereport only (tox chronic)all year001
TU Static 48Hr Chronic Macrocystis pyriferadaily maximumreport only (tox chronic)all year001
TU Static 48Hr Chronic Crassostrea gigasaveragereport only (tox chronic)all year001
TU Static 48Hr Chronic Crassostrea gigasdaily maximumreport only (tox chronic)all year001
TU Static 48Hr Chronic Haliotis rufescensaveragereport only (tox chronic)all year001
TU Static 48Hr Chronic Haliotis rufescensdaily maximumreport only (tox chronic)all year001
Static 48Hr Chronic Mytilis Speciesaveragereport only (tox chronic)all year001
Static 48Hr Chronic Mytilis Speciesdaily maximumreport only (tox chronic)all year001
TU Static Renewal 7-Day Chronic Americamysis bahia (formerly Mysidopsis bahia)averagereport only (tox chronic)all year001
TU Static Renewal 7-Day Chronic Americamysis bahia (formerly Mysidopsis bahia)daily maximumreport only (tox chronic)all year001
TU Static Renewal 7-Day Chronic Holmesimysis costataaveragereport only (tox chronic)all year001
TU Static Renewal 7-Day Chronic Holmesimysis costatadaily maximumreport only (tox chronic)all year001
TU Static Renewal 7-Day Chronic Menidia beryllinaaveragereport only (tox chronic)all year001
TU Static Renewal 7-Day Chronic Menidia beryllinadaily maximumreport only (tox chronic)all year001
Toxic Units Static Renewal 7-Day Chronic Atherinops affinis averagereport only (tox chronic)all year001
Toxic Units Static Renewal 7-Day Chronic Atherinops affinis daily maximumreport only (tox chronic)all year001
TU Static 20Min Chronic Strongyl. purpuratusaveragereport only (tox chronic)all year001
TU Static 20Min Chronic Strongyl. purpuratusdaily maximumreport only (tox chronic)all year001
Static 20Min Chronic Dendraster excentricusaveragereport only (tox chronic)all year001
Static 20Min Chronic Dendraster excentricusdaily maximumreport only (tox chronic)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all yearINF
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF
Flow, totaltotalreport only (Mgal)all yearINF
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all yearINF

How strict are these limits?

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

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