University of Sourthern California

NPDES permit CA0056651 · Minor NON-POTW · effective, expires 2029-06-30 · 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

4values over a limit
0required values missing, on 0 form(s)
6of 26 forms filed late

Last period with anything received: 2026-06-30. Most often over: Enterococci (3), Coliform, fecal general (1).

Reporting

Reports are due about 32 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (251)

OutfallParameterStatisticLimitMonths
EFF1Temperature, water deg. fahrenheitINST MAX <= 86 deg F all year
EFF1TurbidityMO AVG <= 50 NTU all year
EFF1TurbidityDAILY MX <= 150 NTU all year
EFF1TurbidityINST MAX <= 225 NTU all year
EFF1RadioactivityDAILY MX report only all year
EFF1BOD, 5-day, 20 deg. CMO AVG <= 20 mg/L all year
EFF1BOD, 5-day, 20 deg. CDAILY MX <= 60 mg/L all year
EFF1BOD, 5-day, 20 deg. CMO AVG <= 60 lb/d all year
EFF1BOD, 5-day, 20 deg. CDAILY MX <= 180 lb/d all year
EFF1pHINST MIN >= 6 SU all year
EFF1pHINST MAX <= 9 SU all year
EFF1SalinityDAILY MX report only all year
EFF1Solids, total suspendedMO AVG <= 50 mg/L all year
EFF1Solids, total suspendedDAILY MX <= 150 mg/L all year
EFF1Solids, total suspendedMO AVG <= 150 lb/d all year
EFF1Solids, total suspendedDAILY MX <= 450 lb/d all year
EFF1Solids, settleableMO AVG <= 1 mL/L all year
EFF1Solids, settleableWKLY AVG <= 1.5 mL/L all year
EFF1Solids, settleableINST MAX <= 3 mL/L all year
EFF1Nitrogen, ammonia total [as N]DAILY MX report only all year
EFF1Cyanide, total [as CN]DAILY MX report only all year
EFF1Arsenic, total recoverableDAILY MX report only all year
EFF1Selenium, total recoverableDAILY MX report only all year
EFF1Thallium, total recoverableDAILY MX report only all year
EFF1Beryllium, total recoverable [as Be]DAILY MX report only all year
EFF1Chromium, hexavalent [as Cr]DAILY MX report only all year
EFF1Chromium, trivalent [as Cr]DAILY MX report only all year
EFF1Nickel, total recoverableDAILY MX report only all year
EFF1Silver total recoverableDAILY MX report only all year
EFF1Zinc, total recoverableDAILY MX report only all year
EFF1Cadmium, total recoverableDAILY MX report only all year
EFF1Lead, total recoverableDAILY MX report only all year
EFF1Copper, total recoverableDAILY MX report only all year
EFF1Antimony, total recoverableDAILY MX report only all year
EFF1Oil and greaseMO AVG <= 10 mg/L all year
EFF1Oil and greaseDAILY MX <= 15 mg/L all year
EFF1Oil and greaseMO AVG <= 30 lb/d all year
EFF1Oil and greaseDAILY MX <= 45 lb/d all year
EFF12-Methyl-4,6-dinitrophenolDAILY MX report only all year
EFF1TributyltinDAILY MX report only all year
EFF1Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX report only all year
EFF1DichlorobromomethaneDAILY MX report only all year
EFF1Carbon tetrachlorideDAILY MX report only all year
EFF11,2-DichloroethaneDAILY MX report only all year
EFF1DibromochloromethaneDAILY MX report only all year
EFF1ChloroformDAILY MX report only all year
EFF1TolueneDAILY MX report only all year
EFF1BenzeneDAILY MX report only all year
EFF1AcroleinDAILY MX report only all year
EFF1AcrylonitrileDAILY MX report only all year
EFF1Bis[2-chloroethyl] etherDAILY MX report only all year
EFF1Bis[2-chloroethoxy]methaneDAILY MX report only all year
EFF1Bis[2-chloroisopropyl] etherDAILY MX report only all year
EFF1ChlorobenzeneDAILY MX report only all year
EFF1Diethyl phthalateDAILY MX report only all year
EFF1Dimethyl phthalateDAILY MX report only all year
EFF11,2-DiphenylhydrazineDAILY MX report only all year
EFF1EthylbenzeneDAILY MX report only all year
EFF1FluorantheneDAILY MX report only all year
EFF1HexachlorocyclopentadieneDAILY MX report only all year
EFF1HexachlorobutadieneDAILY MX report only all year
EFF1HexachloroethaneDAILY MX report only all year
EFF1IsophoroneDAILY MX report only all year
EFF1Methylene chlorideDAILY MX report only all year
EFF1N-Nitrosodi-N-propylamineDAILY MX report only all year
EFF1N-NitrosodiphenylamineDAILY MX report only all year
EFF1N-Nitrosodimethylamine [NDMA]DAILY MX report only all year
EFF1NitrobenzeneDAILY MX report only all year
EFF1TetrachloroethyleneDAILY MX report only all year
EFF11,1-DichloroethyleneDAILY MX report only all year
EFF11,1,1-TrichloroethaneDAILY MX report only all year
EFF11,1,2-TrichloroethaneDAILY MX report only all year
EFF11,1,2,2-TetrachloroethaneDAILY MX report only all year
EFF11,4-DichlorobenzeneDAILY MX report only all year
EFF12,4-DinitrotolueneDAILY MX report only all year
EFF12,4-DinitrophenolDAILY MX report only all year
EFF12,4,6-TrichlorophenolDAILY MX report only all year
EFF13,3'-DichlorobenzidineDAILY MX report only all year
EFF1Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
EFF1Di-n-butyl phthalateDAILY MX report only all year
EFF1BenzidineDAILY MX report only all year
EFF1Vinyl chlorideDAILY MX report only all year
EFF1TrichloroethyleneDAILY MX report only all year
EFF1AldrinDAILY MX report only all year
EFF1Chlordane [tech mix. and metabolites]DAILY MX report only all year
EFF1DDT/DDD/DDE, sum of p,p' & o,p' isomersDAILY MX report only all year
EFF1DieldrinDAILY MX report only all year
EFF1Endosulfan, totalDAILY MX report only all year
EFF1EndrinDAILY MX report only all year
EFF1ToxapheneDAILY MX report only all year
EFF1HeptachlorDAILY MX report only all year
EFF1Heptachlor epoxideDAILY MX report only all year
EFF1HexachlorobenzeneDAILY MX 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 residualDAILY MX report only all year
EFF1Nitrogen, Ammonia TotalDAILY MX report only all year
EFF1Polychlorinated biphenyls [PCBs], sum of AroclorsDAILY MX report only all year
EFF1Enterococci1B <= 110 MPN/100mL all year
EFF1EnterococciGEO MEAN <= 30 MPN/100mL all year
EFF1Mercury, total recoverableDAILY MX report only all year
EFF1Phenols, chlorinatedDAILY MX report only all year
EFF1Coliform, fecal general30DA GM <= 200 MPN/100mL all year
EFF1Coliform, fecal generalMW <= 400 MPN/100mL all year
EFF1Coliform, total general30DA GM report only all year
EFF1Coliform, total generalMW report only all year
EFF11,3-DichloropropeneDAILY MX report only all year
EFF1Hexachlorocyclohexane, totalDAILY MX report only all year
EFF1Phenolic compounds, unchlorinatedDAILY MX report only all year
EFF1HalomethanesDAILY MX report only all year
EFF1DichlorobenzeneDAILY MX report only all year
EFF1TCDD equivalentsDAILY MX report only all year
EFF1Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisMO AVG <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisDAILY MX <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisDAILY MX <= 50 % effect all year
EFF1Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr H rufescensMO AVG <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr H rufescensDAILY MX <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr H rufescensDAILY MX <= 50 % effect all year
EFF1Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusMO AVG <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusDAILY MX <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusDAILY MX <= 50 % effect all year
EFF1Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusMO AVG <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusDAILY MX <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusDAILY MX <= 50 % effect all year
EFF1Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaMO AVG <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaDAILY MX <= 0 pass=0;fail=1 all year
EFF1Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaDAILY MX <= 50 % effect all year
EFF2Temperature, water deg. fahrenheitINST MAX <= 86 deg F all year
EFF2TurbidityDAILY MX <= 150 NTU all year
EFF2RadioactivityDAILY MX report only all year
EFF2Oxygen, dissolved [DO]INST MIN report only all year
EFF2BOD, 5-day, 20 deg. CDAILY MX <= 60 mg/L all year
EFF2BOD, 5-day, 20 deg. CDAILY MX <= 305 lb/d all year
EFF2pHINST MIN >= 6 SU all year
EFF2pHINST MAX <= 9 SU all year
EFF2Solids, total suspendedDAILY MX <= 150 mg/L all year
EFF2Solids, total suspendedDAILY MX <= 760 lb/d all year
EFF2Solids, settleableINST MAX <= 3 mL/L all year
EFF2Nitrogen, ammonia total [as N]DAILY MX report only all year
EFF2Cyanide, total [as CN]DAILY MX report only all year
EFF2Arsenic, total recoverableDAILY MX <= 32 ug/L all year
EFF2Arsenic, total recoverableDAILY MX <= .16 lb/d all year
EFF2Selenium, total recoverableDAILY MX report only all year
EFF2Thallium, total recoverableDAILY MX report only all year
EFF2Beryllium, total recoverable [as Be]DAILY MX <= .033 ug/L all year
EFF2Beryllium, total recoverable [as Be]DAILY MX <= .00017 lb/d all year
EFF2Chromium, hexavalent [as Cr]DAILY MX report only all year
EFF2Chromium, trivalent [as Cr]DAILY MX report only all year
EFF2Nickel, total recoverableDAILY MX <= 20 ug/L all year
EFF2Nickel, total recoverableDAILY MX <= .1 lb/d all year
EFF2Silver total recoverableDAILY MX report only all year
EFF2Zinc, total recoverableDAILY MX <= 80 ug/L all year
EFF2Zinc, total recoverableDAILY MX <= .41 lb/d all year
EFF2Cadmium, total recoverableDAILY MX report only all year
EFF2Lead, total recoverableDAILY MX <= 8 ug/L all year
EFF2Lead, total recoverableDAILY MX <= .04 lb/d all year
EFF2Copper, total recoverableDAILY MX <= 12 ug/L all year
EFF2Copper, total recoverableDAILY MX <= .061 lb/d all year
EFF2Antimony, total recoverableDAILY MX report only all year
EFF2Oil and greaseDAILY MX <= 15 mg/L all year
EFF2Oil and greaseDAILY MX <= 76 lb/d all year
EFF22-Methyl-4,6-dinitrophenolDAILY MX report only all year
EFF2TributyltinDAILY MX report only all year
EFF2Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX report only all year
EFF2DichlorobromomethaneDAILY MX report only all year
EFF2Carbon tetrachlorideDAILY MX report only all year
EFF21,2-DichloroethaneDAILY MX report only all year
EFF2DibromochloromethaneDAILY MX report only all year
EFF2ChloroformDAILY MX report only all year
EFF2TolueneDAILY MX report only all year
EFF2BenzeneDAILY MX report only all year
EFF2AcroleinDAILY MX report only all year
EFF2AcrylonitrileDAILY MX report only all year
EFF2Bis[2-chloroethyl] etherDAILY MX report only all year
EFF2Bis[2-chloroethoxy]methaneDAILY MX report only all year
EFF2Bis[2-chloroisopropyl] etherDAILY MX report only all year
EFF2ChlorobenzeneDAILY MX report only all year
EFF2Diethyl phthalateDAILY MX report only all year
EFF2Dimethyl phthalateDAILY MX report only all year
EFF21,2-DiphenylhydrazineDAILY MX report only all year
EFF2EthylbenzeneDAILY MX report only all year
EFF2FluorantheneDAILY MX report only all year
EFF2HexachlorocyclopentadieneDAILY MX report only all year
EFF2HexachlorobutadieneDAILY MX report only all year
EFF2HexachloroethaneDAILY MX report only all year
EFF2IsophoroneDAILY MX report only all year
EFF2Methylene chlorideDAILY MX report only all year
EFF2N-Nitrosodi-N-propylamineDAILY MX report only all year
EFF2N-NitrosodiphenylamineDAILY MX report only all year
EFF2N-Nitrosodimethylamine [NDMA]DAILY MX report only all year
EFF2NitrobenzeneDAILY MX report only all year
EFF2TetrachloroethyleneDAILY MX report only all year
EFF21,1-DichloroethyleneDAILY MX report only all year
EFF21,1,1-TrichloroethaneDAILY MX report only all year
EFF21,1,2-TrichloroethaneDAILY MX report only all year
EFF21,1,2,2-TetrachloroethaneDAILY MX report only all year
EFF21,4-DichlorobenzeneDAILY MX report only all year
EFF22,4-DinitrotolueneDAILY MX report only all year
EFF22,4-DinitrophenolDAILY MX report only all year
EFF22,4,6-TrichlorophenolDAILY MX report only all year
EFF23,3'-DichlorobenzidineDAILY MX report only all year
EFF2Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
EFF2Di-n-butyl phthalateDAILY MX report only all year
EFF2BenzidineDAILY MX report only all year
EFF2Vinyl chlorideDAILY MX report only all year
EFF2TrichloroethyleneDAILY MX report only all year
EFF2AldrinDAILY MX report only all year
EFF2Chlordane [tech mix. and metabolites]DAILY MX report only all year
EFF2DDT/DDD/DDE, sum of p,p' & o,p' isomersDAILY MX report only all year
EFF2DieldrinDAILY MX report only all year
EFF2Endosulfan, totalDAILY MX report only all year
EFF2EndrinDAILY MX report only all year
EFF2ToxapheneDAILY MX report only all year
EFF2HeptachlorDAILY MX report only all year
EFF2Heptachlor epoxideDAILY MX report only all year
EFF2HexachlorobenzeneDAILY MX report only all year
EFF2Flow, in conduit or thru treatment plantMO AVG report only all year
EFF2Flow, in conduit or thru treatment plantDAILY MX report only all year
EFF2Chlorine, total residualDAILY MX report only all year
EFF2Polychlorinated biphenyls [PCBs], sum of AroclorsDAILY MX report only all year
EFF2Enterococci1B <= 110 MPN/100mL all year
EFF2EnterococciGEO MEAN <= 30 MPN/100mL all year
EFF2Mercury, total recoverableDAILY MX report only all year
EFF2Phenols, chlorinatedDAILY MX report only all year
EFF2Coliform, fecal general30DA GM <= 200 MPN/100mL all year
EFF2Coliform, fecal generalMW <= 400 MPN/100mL all year
EFF2Coliform, total general30DA GM report only all year
EFF2Coliform, total generalMW report only all year
EFF21,3-DichloropropeneDAILY MX report only all year
EFF2Hexachlorocyclohexane, totalDAILY MX report only all year
EFF2Phenolic compounds, unchlorinatedDAILY MX report only all year
EFF2HalomethanesDAILY MX report only all year
EFF2DichlorobenzeneDAILY MX report only all year
EFF2TCDD equivalentsDAILY MX <= .0000039 ng/L all year
EFF2TCDD equivalentsDAILY MX <= .00002 Mlb/da all year
EFF2Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisDAILY MX <= 0 pass=0;fail=1 all year
EFF2Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d A affinisDAILY MX <= 50 % effect all year
EFF2Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr H rufescensDAILY MX <= 0 pass=0;fail=1 all year
EFF2Chronic Mthd Larval Development Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr H rufescensDAILY MX <= 50 % effect all year
EFF2Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusDAILY MX <= 0 pass=0;fail=1 all year
EFF2Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min S purpuratusDAILY MX <= 50 % effect all year
EFF2Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusDAILY MX <= 0 pass=0;fail=1 all year
EFF2Chronic Mthd Fertilization Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static40min D excentricusDAILY MX <= 50 % effect all year
EFF2Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaDAILY MX <= 0 pass=0;fail=1 all year
EFF2Chronic Mthd Germination Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static48hr M pyriferaDAILY MX <= 50 % effect all year
INF1Enterococci30DA GM report only all year
INF1EnterococciMW report only all year
INF1Coliform, fecal general30DA GM report only all year
INF1Coliform, fecal generalMW report only all year
INF1Coliform, total general30DA GM report only all year
INF1Coliform, total generalMW report only all year

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