Clean Water Act discharge permit · NPDES CA0107611
ALISO CREEK OCEAN OUTFALL, Orange County, CA: NPDES CA0107611 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 108Pollutants under a numeric limit
- 20Pollutants with an effluent exceedance
ALISO CREEK OCEAN OUTFALL, held by South Orange County Wastewater Authority, holds NPDES permit CA0107611, which discharges to Pacific Ocean. EPA’s file records it issued April 11, 2012 and expiring May 31, 2017. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | ALISO CREEK OCEAN OUTFALL |
|---|---|
| Permittee as filed | South Orange County Wastewater Authority |
| NPDES ID | CA0107611 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 11, 2012 |
| Expiration date | May 31, 2017 |
| Address | Orange County, CA 92629 |
| Receiving water | Pacific Ocean |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 111Pollutants on file
- 108Under a numeric limit
- 108With a violation of any kind
- 20With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant; the 60 with the most exceedances of 111 are shown.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| BOD, carbonaceous [5 day, 20 C] | 32 | 51 | 9 | April 30, 2025 | 99,999% over the limit |
| TCDD equivalents | 2 | 11 | 8 | December 31, 2018 | 2,147,483,650% over the limit |
| Solids, settleable | 21 | 59 | 6 | May 31, 2022 | 967% over the limit |
| Solids, suspended percent removal | 4 | 6 | 6 | December 31, 2017 | 153% over the limit |
| Tributyltin | 2 | 6 | 4 | December 31, 2001 | 170% over the limit |
| Polynuclear Aromatic Hydrocarbons [PAHs] | 2 | 6 | 4 | December 31, 2001 | 335% over the limit |
| 3,3'-Dichlorobenzidine | 2 | 6 | 4 | December 31, 2001 | 852% over the limit |
| Benzidine | 2 | 6 | 4 | December 31, 2001 | 55,456% over the limit |
| Aldrin | 2 | 6 | 4 | December 31, 2001 | 50,777% over the limit |
| Chlordane [tech mix. and metabolites] | 2 | 6 | 4 | December 31, 2001 | 33,233% over the limit |
| Polychlorinated biphenyls [PCBs] | 2 | 6 | 4 | December 31, 2001 | 99,900% over the limit |
| Hexachlorobenzene | 2 | 6 | 4 | December 31, 2001 | 81,718% over the limit |
| DDT/DDD/DDE, sum of p,p' & o,p' isomers | 2 | 5 | 3 | December 31, 2001 | 68,082% over the limit |
| Toxaphene | 2 | 5 | 3 | December 31, 2001 | 72,627% over the limit |
| Acrylonitrile | 2 | 5 | 2 | June 30, 2001 | 92% over the limit |
| Dieldrin | 2 | 4 | 2 | December 31, 2001 | 99,900% over the limit |
| Solids, total suspended | 38 | 53 | 1 | November 30, 2013 | 30% over the limit |
| pH | 14 | 7 | 1 | June 30, 2011 | |
| Dichlorobenzene | 2 | 5 | 1 | June 30, 2004 | 146% over the limit |
| TU Static 48Hr Chronic Macrocystis pyrifera | 2 | 1 | 1 | May 31, 2009 | 99,999% over the limit |
| Oil and grease | 35 | 110 | 0 | ||
| Chlorine, total residual | 5 | 60 | 0 | ||
| Flow, in conduit or thru treatment plant | 24 | 38 | 0 | ||
| BOD, 5-day, 20 deg. C | 16 | 21 | 0 | ||
| Turbidity | 21 | 15 | 0 | ||
| TU Static Renewal 7-Day Chronic Menidia beryllina | 2 | 10 | 0 | ||
| Toxic Units Static Renewal 7-Day Chronic Atherinops affinis | 2 | 10 | 0 | ||
| TU Static 20Min Chronic Strongyl. purpuratus | 2 | 10 | 0 | ||
| Static 20Min Chronic Dendraster excentricus | 2 | 10 | 0 | ||
| Cyanide, total [as CN] | 5 | 9 | 0 | ||
| Arsenic, total recoverable | 5 | 9 | 0 | ||
| Selenium, total recoverable | 5 | 9 | 0 | ||
| Chromium, hexavalent [as Cr] | 5 | 9 | 0 | ||
| Nickel, total recoverable | 5 | 9 | 0 | ||
| Silver total recoverable | 5 | 9 | 0 | ||
| Lead, total recoverable | 5 | 8 | 0 | ||
| Copper, total recoverable | 5 | 8 | 0 | ||
| Endosulfan, total | 5 | 8 | 0 | ||
| Endrin | 5 | 8 | 0 | ||
| Mercury, total recoverable | 5 | 8 | 0 | ||
| TU Static 72Hr Chronic Strongyl. purpuratus | 2 | 8 | 0 | ||
| Static 72Hr Chronic Dendraster excentricus | 2 | 8 | 0 | ||
| TU Static 48Hr Chronic Crassostrea gigas | 2 | 8 | 0 | ||
| TU Static 48Hr Chronic Haliotis rufescens | 2 | 8 | 0 | ||
| Static 48Hr Chronic Mytilis Species | 2 | 8 | 0 | ||
| TU Static Renewal 7-Day Chronic Holmesimysis costata | 2 | 8 | 0 | ||
| TU Static Renewal 7-Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 2 | 8 | 0 | ||
| Zinc, total recoverable | 5 | 7 | 0 | ||
| Cadmium, total recoverable | 5 | 7 | 0 | ||
| Phenols, chlorinated | 5 | 7 | 0 | ||
| Hexachlorocyclohexane, total | 5 | 7 | 0 | ||
| Phenolic compounds, unchlorinated | 5 | 7 | 0 | ||
| Halomethanes | 2 | 7 | 0 | ||
| Heptachlor | 2 | 6 | 0 | ||
| Nitrogen, ammonia total [as N] | 5 | 4 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 4 | 4 | 0 | ||
| Thallium, total recoverable | 2 | 4 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 4 | 0 | ||
| Radioactivity | 1 | 4 | 0 | ||
| Dichlorobromomethane | 2 | 3 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES CA0107611.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID CA0107611 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.