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Sewage treatment plant, major discharger, Oxnard, California. NPDES permit CA0054097, in force until Jun 30, 2029. Last 12 months: over a limit 8 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit |
|---|---|---|---|
| October 2025 | pH, daily maximum | 7.2 SU | ≤ 6 SU |
| November 2025 | pH, daily maximum | 7.2 SU | ≤ 6 SU |
| December 2025 | pH, daily maximum | 7.2 SU | ≤ 6 SU |
| January 2026 | pH, daily maximum | 7.1 SU | ≤ 6 SU |
| April 2026 | pH, daily maximum | 7.2 SU | ≤ 6 SU |
| May 2026 | pH, daily maximum | 7.3 SU | ≤ 6 SU |
| June 2026 | pH, daily maximum | 7.3 SU | ≤ 6 SU |
| July 2026 | pH, daily maximum | 7.3 SU | ≤ 6 SU |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | EFFA |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | EFFA |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 7930 lb/d | all year | EFFA |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 11900 lb/d | all year | EFFA |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | EFFA |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | EFFA |
| Solids, total suspended | monthly average | ≤ 7930 lb/d | all year | EFFA |
| Solids, total suspended | weekly average | ≤ 11900 lb/d | all year | EFFA |
| BOD, carb-5 day, 20 deg C, percent removal | monthly average minimum | ≥ 85 % | all year | EFFA |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | EFFA |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 100 deg F | all year | EFFB |
| Turbidity | monthly average | ≤ 75 NTU | all year | EFFB |
| Turbidity | weekly average | ≤ 100 NTU | all year | EFFB |
| Turbidity | daily maximum | ≤ 225 NTU | all year | EFFB |
| Turbidity | monthly average | report only (NTU) | all year | EFFB |
| pH | daily maximum | ≤ 6 SU | all year | EFFB |
| pH | instantaneous maximum | ≤ 9 SU | all year | EFFB |
| Solids, settleable | daily maximum | ≤ 1 mL/L | all year | EFFB |
| Solids, settleable | monthly average | ≤ 1.5 mL/L | all year | EFFB |
| Solids, settleable | instantaneous maximum | ≤ 3 mL/L | all year | EFFB |
| Nitrogen, organic total [as N] | daily maximum | report only (mg/L) | all year | EFFB |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 65.4 mg/L | all year | EFFB |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 262 mg/L | all year | EFFB |
| Nitrogen, ammonia total [as N] | instantaneous maximum | ≤ 654 mg/L | all year | EFFB |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 17290 lb/d | all year | EFFB |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 69270 lb/d | all year | EFFB |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | all year | EFFB |
| Nitrogen, ammonia total [as N] | monthly average | report only (lb/d) | all year | EFFB |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | EFFB |
| Oil and grease | monthly average | ≤ 25 mg/L | all year | EFFB |
| Oil and grease | weekly average | ≤ 40 mg/L | all year | EFFB |
| Oil and grease | instantaneous maximum | ≤ 75 mg/L | all year | EFFB |
| Oil and grease | monthly average | ≤ 6610 lb/d | all year | EFFB |
| Oil and grease | weekly average | ≤ 10600 lb/d | all year | EFFB |
| Oil and grease | daily maximum | report only (lb/d) | all year | EFFB |
| Oil and grease | monthly average | report only (lb/d) | all year | EFFB |
| Polynuclear Aromatic Hydrocarbons [PAHs] | monthly average | report only (ug/L) | all year | EFFB |
| 1,4-Dichlorobenzene | monthly average | report only (ug/L) | all year | EFFB |
| Di[2-ethylhexyl] phthalate [DEHP] | monthly average | report only (ug/L) | all year | EFFB |
| Benzidine | monthly average | ≤ .0068 ug/L | all year | EFFB |
| Benzidine | monthly average | ≤ .0018 lb/d | all year | EFFB |
| DDT | daily maximum | report only (ug/L) | all year | EFFB |
| Dieldrin | monthly average | ≤ .0044 ug/L | all year | EFFB |
| Dieldrin | monthly average | ≤ .0012 lb/d | all year | EFFB |
| Endosulfan, total | daily maximum | report only (ug/L) | all year | EFFB |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | EFFB |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | EFFB |
| Chlordane | daily maximum | report only (ug/L) | all year | EFFB |
| Nitrogen, Total | daily maximum | report only (mg/L) | all year | EFFB |
| Nitrogen, Nitrite Total | daily maximum | report only (mg/L) | all year | EFFB |
| Nitrogen, Nitrate Total | daily maximum | report only (mg/L) | all year | EFFB |
| Nitrogen, Kjeldahl Total | daily maximum | report only (mg/L) | all year | EFFB |
| Polychlorinated biphenyls [PCBs], sum of congeners | daily maximum | report only (pg/L) | all year | EFFB |
| Polychlorinated biphenyls [PCBs], sum of congeners | monthly average | report only (pg/L) | all year | EFFB |
| Polychlorinated biphenyls [PCBs], sum of Aroclors | daily maximum | ≤ .0019 ug/L | all year | EFFB |
| Polychlorinated biphenyls [PCBs], sum of Aroclors | monthly average | report only (ug/L) | all year | EFFB |
| Polychlorinated biphenyls [PCBs], sum of Aroclors | monthly average | ≤ .0005 lb/d | all year | EFFB |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | all year | EFFB |
| Phenols, chlorinated | daily maximum | report only (ug/L) | all year | EFFB |
| Flow | daily maximum | report only (MGD) | all year | EFFB |
| Hexachlorocyclohexane, total | daily maximum | report only (ug/L) | all year | EFFB |
| Phenolic compounds, unchlorinated | monthly average | report only (ug/L) | all year | EFFB |
| Halomethanes | monthly average | report only (ug/L) | all year | EFFB |
| Alpha gross radioactivity | monthly average | report only (pCi/L) | all year | EFFB |
| Dichlorobenzene | daily maximum | report only (ug/L) | all year | EFFB |
| TCDD equivalents | daily maximum | ≤ .39 pg/L | all year | EFFB |
| TCDD equivalents | monthly average | report only (pg/L) | all year | EFFB |
| TCDD equivalents | monthly average | ≤ .0000001 lb/d | all year | EFFB |
| PFAS Sum | daily maximum | report only (ng/L) | all year | EFFB |
| %Effect Static Renewal 7 Day Chronic Atherinops affinis | daily maximum | report only (% effect) | all year | EFFB |
| Pass/Fail Static Renewal 7 Day Chronic Atherinops affinis | daily maximum | ≤ 0 pass=0;fail=1 | all year | EFFB |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | INF1 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | INF1 |
| pH | daily maximum | report only (SU) | all year | INF1 |
| pH | monthly average | report only (SU) | all year | INF1 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | INF1 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INF1 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | INF1 |
| Oil and grease | daily maximum | report only (mg/L) | all year | INF1 |
| Oil and grease | monthly average | report only (mg/L) | all year | INF1 |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | report only (ug/L) | all year | INF1 |
| Benzidine | daily maximum | report only (ug/L) | all year | INF1 |
| Chlordane | daily maximum | report only (ug/L) | all year | INF1 |
| Polychlorinated biphenyls [PCBs], sum of Aroclors | daily maximum | report only (ug/L) | all year | INF1 |
| Mercury, total [as Hg] | daily maximum | report only (ug/L) | all year | INF1 |
| Flow | daily maximum | report only (MGD) | all year | INF1 |
| Flow | monthly average | report only (MGD) | all year | INF1 |
| Alpha gross radioactivity | daily maximum | report only (pCi/L) | all year | INF1 |
| TCDD equivalents | daily maximum | report only (pg/L) | all year | INF1 |
Cited limits by parameter: California's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/CA0054097 · MCP: https://passage-data.com/mcp