City of Oxnard Municipal Corporation

NPDES permit CA0054097 · Major 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

7values over a limit
0required values missing, on 0 form(s)
0of 29 forms filed late

Last period with anything received: 2026-05-31. Most often over: pH (7).

Reporting

Reports are due about 74 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (89)

OutfallParameterStatisticLimitMonths
EFFABOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
EFFABOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
EFFABOD, 5-day, 20 deg. CDAILY MX <= 7930 lb/d all year
EFFABOD, 5-day, 20 deg. CMO AVG <= 11900 lb/d all year
EFFASolids, total suspendedMO AVG <= 30 mg/L all year
EFFASolids, total suspendedWKLY AVG <= 45 mg/L all year
EFFASolids, total suspendedMO AVG <= 7930 lb/d all year
EFFASolids, total suspendedWKLY AVG <= 11900 lb/d all year
EFFABOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
EFFASolids, suspended percent removalMO AV MN >= 85 % all year
EFFBTemperature, water deg. fahrenheitINST MAX <= 100 deg F all year
EFFBTurbidityMO AVG <= 75 NTU all year
EFFBTurbidityWKLY AVG <= 100 NTU all year
EFFBTurbidityDAILY MX <= 225 NTU all year
EFFBTurbidityMO AVG report only all year
EFFBpHDAILY MX <= 6 SU all year
EFFBpHINST MAX <= 9 SU all year
EFFBSolids, settleableDAILY MX <= 1 mL/L all year
EFFBSolids, settleableMO AVG <= 1.5 mL/L all year
EFFBSolids, settleableINST MAX <= 3 mL/L all year
EFFBNitrogen, organic total [as N]DAILY MX report only all year
EFFBNitrogen, ammonia total [as N]DAILY MX <= 65.4 mg/L all year
EFFBNitrogen, ammonia total [as N]MO AVG <= 262 mg/L all year
EFFBNitrogen, ammonia total [as N]INST MAX <= 654 mg/L all year
EFFBNitrogen, ammonia total [as N]MO AVG <= 17290 lb/d all year
EFFBNitrogen, ammonia total [as N]DAILY MX <= 69270 lb/d all year
EFFBNitrogen, ammonia total [as N]DAILY MX report only all year
EFFBNitrogen, ammonia total [as N]MO AVG report only all year
EFFBChromium, total [as Cr]MO AVG report only all year
EFFBOil and greaseMO AVG <= 25 mg/L all year
EFFBOil and greaseWKLY AVG <= 40 mg/L all year
EFFBOil and greaseINST MAX <= 75 mg/L all year
EFFBOil and greaseMO AVG <= 6610 lb/d all year
EFFBOil and greaseWKLY AVG <= 10600 lb/d all year
EFFBOil and greaseDAILY MX report only all year
EFFBOil and greaseMO AVG report only all year
EFFBPolynuclear Aromatic Hydrocarbons [PAHs]MO AVG report only all year
EFFB1,4-DichlorobenzeneMO AVG report only all year
EFFBDi[2-ethylhexyl] phthalate [DEHP]MO AVG report only all year
EFFBBenzidineMO AVG <= .0068 ug/L all year
EFFBBenzidineMO AVG <= .0018 lb/d all year
EFFBDDTDAILY MX report only all year
EFFBDieldrinMO AVG <= .0044 ug/L all year
EFFBDieldrinMO AVG <= .0012 lb/d all year
EFFBEndosulfan, totalDAILY MX report only all year
EFFBChlorine, total residualDAILY MX report only all year
EFFBChlorine, total residualDAILY MX report only all year
EFFBChlordaneDAILY MX report only all year
EFFBNitrogen, TotalDAILY MX report only all year
EFFBNitrogen, Nitrite TotalDAILY MX report only all year
EFFBNitrogen, Nitrate TotalDAILY MX report only all year
EFFBNitrogen, Kjeldahl TotalDAILY MX report only all year
EFFBPolychlorinated biphenyls [PCBs], sum of congenersDAILY MX report only all year
EFFBPolychlorinated biphenyls [PCBs], sum of congenersMO AVG report only all year
EFFBPolychlorinated biphenyls [PCBs], sum of AroclorsDAILY MX <= .0019 ug/L all year
EFFBPolychlorinated biphenyls [PCBs], sum of AroclorsMO AVG report only all year
EFFBPolychlorinated biphenyls [PCBs], sum of AroclorsMO AVG <= .0005 lb/d all year
EFFBMercury, total [as Hg]DAILY MX report only all year
EFFBPhenols, chlorinatedDAILY MX report only all year
EFFBFlowDAILY MX report only all year
EFFBHexachlorocyclohexane, totalDAILY MX report only all year
EFFBPhenolic compounds, unchlorinatedMO AVG report only all year
EFFBHalomethanesMO AVG report only all year
EFFBAlpha gross radioactivityMO AVG report only all year
EFFBDichlorobenzeneDAILY MX report only all year
EFFBTCDD equivalentsDAILY MX <= .39 pg/L all year
EFFBTCDD equivalentsMO AVG report only all year
EFFBTCDD equivalentsMO AVG <= .0000001 lb/d all year
EFFBPFAS SumDAILY MX report only all year
EFFB%Effect Static Renewal 7 Day Chronic Atherinops affinisDAILY MX report only all year
EFFBPass/Fail Static Renewal 7 Day Chronic Atherinops affinisDAILY MX <= 0 pass=0;fail=1 all year
INF1BOD, 5-day, 20 deg. CDAILY MX report only all year
INF1BOD, 5-day, 20 deg. CMO AVG report only all year
INF1pHDAILY MX report only all year
INF1pHMO AVG report only all year
INF1Solids, total suspendedDAILY MX report only all year
INF1Solids, total suspendedMO AVG report only all year
INF1Chromium, total [as Cr]DAILY MX report only all year
INF1Oil and greaseDAILY MX report only all year
INF1Oil and greaseMO AVG report only all year
INF1Di[2-ethylhexyl] phthalate [DEHP]DAILY MX report only all year
INF1BenzidineDAILY MX report only all year
INF1ChlordaneDAILY MX report only all year
INF1Polychlorinated biphenyls [PCBs], sum of AroclorsDAILY MX report only all year
INF1Mercury, total [as Hg]DAILY MX report only all year
INF1FlowDAILY MX report only all year
INF1FlowMO AVG report only all year
INF1Alpha gross radioactivityDAILY MX report only all year
INF1TCDD equivalentsDAILY 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