City of Lathrop

NPDES permit CA0085359 · Major NON-POTW · effective, expires 2027-03-31 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 22 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 32 days after each monitoring period ends (the most common figure among CA permits in EPA's filings — check your permit).

Limits in force (84)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitINST MAX report only all year
001Temperature, water deg. fahrenheitINST MAX report only all year
001Temp. diff. between samp. & upstrm deg. FMAXIMUM <= 20 deg F all year
001Temp. diff. between samp. & upstrm deg. FMAXIMUM <= 20 deg F all year
001TurbidityMO AVG report only all year
001TurbidityMO AVG report only all year
001TurbidityDAILY MX report only all year
001TurbidityINST MAX <= .5 NTU all year
001Specific conductanceANNL AVG <= 1600 umho/cm all year
001Specific conductanceANNL AVG <= 1600 umho/cm all year
001Specific conductanceMO AVG report only all year
001Specific conductanceDAILY MX report only all year
001Oxygen, dissolved [DO]INST MIN report only all year
001Oxygen, dissolved [DO]INST MIN report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L all year
001pHMINIMUM >= 6.5 SU all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 10 mg/L all year
001Solids, total suspendedWKLY AVG <= 15 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 1.1 mg/L all year
001Nitrogen, ammonia total [as N]WKLY AVG <= 2.5 mg/L all year
001Nitrogen, nitrite total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]MO AVG <= 10 mg/L all year
001Nitrite + Nitrate total [as N]WKLY AVG <= 22 mg/L all year
001Carbon, dissolved organic [as C]DAILY MX report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Barium, total [as Ba]MO AVG <= 280 ug/L all year
001Barium, total [as Ba]WKLY AVG <= 330 ug/L all year
001Lead, total recoverableMO AVG <= 2.3 ug/L all year
001Lead, total recoverableDAILY MX <= 5 ug/L all year
001DichlorobromomethaneMO AVG <= 36 ug/L all year
001DichlorobromomethaneDAILY MX <= 71 ug/L all year
001BromoformMO AVG <= 17 ug/L all year
001BromoformDAILY MX <= 34 ug/L all year
001DibromochloromethaneMO AVG <= 15 ug/L all year
001DibromochloromethaneDAILY MX <= 27 ug/L all year
001ChloroformMO AVG <= 130 ug/L all year
001ChloroformDAILY MX <= 260 ug/L all year
001ChlorpyrifosDAILY MX report only all year
001ChlorpyrifosDAILY MX report only all year
001DiazinonDAILY MX report only all year
001DiazinonDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residual4A <= .011 mg/L all year
001Chlorine, total residual1I <= .019 mg/L all year
001Turbidity, time above limitMAXIMUM <= 72 min/d all year
001Mercury, total recoverableDAILY MX report only all year
001Mercury, total recoverableANNL TOT <= 12 g/yr all year
001Mercury, total recoverableANNL TOT <= 12 g/yr all year
001Coliform, total general7C <= 2.2 MPN/100mL all year
001Coliform, total general3E <= 23 MPN/100mL all year
001Coliform, total generalMW <= 240 MPN/100mL all year
001MethylmercuryDAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001%Surv Static Renewal 96Hr Oncorhynchus mykissMINIMUM >= 70 % survival all year
001%Surv Static Renewal 96Hr Oncorhynchus mykissBA >= 90 % survival all year
001% Survival Flow Through 96Hr Acute Oncorhynchus mykissMINIMUM >= 70 % survival all year
001% Survival Flow Through 96Hr Acute Oncorhynchus mykissBA >= 90 % survival all year
001TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)AVERAGE report only all year
001TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)MAXIMUM report only all year
001TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaAVERAGE report only all year
001TU Static Renewal 7-Day Chronic Ceriodaphnia dubiaMAXIMUM report only all year
001TU Static Renewal 7-Day Chronic Pimphales promelasAVERAGE report only all year
001TU Static Renewal 7-Day Chronic Pimphales promelasMAXIMUM report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasVALUE report only all year
001Chronic Mthd, Survival Endpt %Effect, Growth Endpt Median TSTcHo R/nR Pass/Fail, StatR7d P promelasMAXIMUM report only all year
001Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaVALUE report only all year
001Chronic Mthd, Survival Endpt %Effect, Reprod Endpt Median TSTcHo R/nR Pass/Fail, StatR8dmax C dubiaMAXIMUM report only all year
001Chronic Mthd Growth Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static96hr R subcapitataVALUE report only all year
001Chronic Mthd Growth Endpt, %Effect, Median TSTcHo R/nR Pass/Fail, Static96hr R subcapitataMAXIMUM report only all year
INFSpecific conductanceMO AVG report only all year
INFSpecific conductanceDAILY MX report only all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFBOD, 5-day, 20 deg. CDAILY MX report only all year
INFSolids, total suspendedMO AVG report only all year
INFSolids, total suspendedDAILY MX report only all year
INFFlow, in conduit or thru treatment plantMO AVG report only all year
INFFlow, in conduit or thru treatment plantDAILY MX report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states