California Stormwater Intelligence

← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

San Antonio Creek (Tributary to Ventura River Reach 4)

Waterbody ID (WBID): CAR4022002320020131162536
County / counties: Ventura
Regional Water Board: Regional Board 4 - Los Angeles Region
Waterbody type: River & Stream
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (8)

Each row is one official listing decision from Appendix A of the Final 2026 California Integrated Report. Source terminology is preserved as published.

Pollutant / stressor	Decision ID	Final listing decision	Decision status	TMDL requirement status	TMDL project	TMDL priority
DDD (Dichlorodiphenyldichloroethane)Pesticides	149796	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
DDE (Dichlorodiphenyldichloroethylene)Pesticides	149797	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
DDT (Dichlorodiphenyltrichloroethane)Pesticides	150131	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
FenpropathrinPesticides	136423	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
NitrogenNutrients	69781	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Ventura River Algae/Nutrients (88)	—
Oxygen, DissolvedNutrients	151890	List on 303(d) list (being addressed by USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Ventura River Algae/Nutrients (88)	—
Specific ConductivitySALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	149801	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Total Dissolved SolidsSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	136405	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low

Source & provenance

Agency: California State Water Resources Control Board
Report: Final 2026 California Integrated Report
Dataset: Appendix A — 2026 303(d) List of Impaired Waters
Imported: Aug 21, 2026, 12:44 AM UTC
Waterbody ID: CAR4022002320020131162536
CALWNUM: 4402.200202, 4402.200203, 4402.320001, 4402.320002, 4402.320003
WBD code: 180701010103, 180701010106
Geometry: Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)

View official Water Board fact sheet ↗Download Appendix A source file ↗

Location

Official 2026 Water Board geometry. Demonstration facility markers are shown for context only.

Loading map…

Watershed: —
Assessed size: 9.92 Miles

Derived facility associations

Industrial stormwater facilities geographically associated with this waterbody. These are derived spatial associations, not Water Board findings.

Derived

Ventura · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

C&J Well Services LLC

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

casa del sol ironworks

Ventura · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ojai · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Dairy Farmers America

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Fairchild Freight LLC

Ventura · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Interstate Rebar Inc

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

NTT Equipment Repair

Ventura · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ventura · No Exposure Certification · 0.21 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Ojai Unifed School District

Ojai · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ojai Valley Brewery

Ojai · No Exposure Certification · 0.59 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

OST Truck and Cranes

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pacific Stoneworks Inc

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ventura · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Production Tool Specialties

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

R R Pumping Unit Repair Service

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

ReadyRefresh Ventura

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Riviera Bronze Manufacturing

Ventura · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Roklin Systems Inc

Ventura · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

RSB Stoneworks Incorporated

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ventura · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Solimar Coatings

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Sunbelt Rentals PC 763

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

T&T Truck and Crane Ventura

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

The Ojai Vineyard Inc

Oak View · No Exposure Certification · 0.36 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Trico Welding Inc

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ventura Spirits

Ventura · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Villa Custom Woodworking

Ventura · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Virdi Power Inc

Ventura · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

VUSD Transportation Facility

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Westco International Consulting Inc

Ventura · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Westco International Consulting Inc

Ventura · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Wl Rubottom Co Inc

Ventura · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Facility records are official Industrial General Permit registrations, but the association between a facility and this waterbody is derived geographically (proximity or shared HUC12 subwatershed) and is not a Water Board receiving-water determination. Where a permit carries a Water Board-stated TMDL requirement naming this water, it is listed separately above.