California Stormwater Intelligence

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Waterbody profile

Official Water Board record · 2026 cycle

Santa Anita Wash (Peck Road Park to Elkins Ave.)

Waterbody ID (WBID): CAR4123100020210715073524
County / counties: Los Angeles
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 (2)

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
Indicator BacteriaPathogens	150329	List on 303(d) list (being addressed by USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Los Angeles River Pathogens (15)	—
LeadMetals	140720	List on 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: CAR4123100020210715073524
CALWNUM: 4412.31
WBD code: 180701050302
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.

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Watershed: —
Assessed size: 5.05 Miles

Facilities with an NAL exceedance for a listed pollutant (2)

Geographically associated industrial stormwater facilities whose reported results exceeded an Industrial General Permit Numeric Action Level for a pollutant this waterbody is listed for.

Derived

Dave S Auto Truck Dismantlin4 19I001717

Lead · most recent exceedance RY 2018 · association: derived watershed association

Duarte Auto Wrecking4 19I020452

Lead · most recent exceedance RY 2017 · association: derived watershed association

This is derived co-occurrence between a calculated NAL comparison and the official 303(d) listing for this waterbody. An NAL exceedance triggers Exceedance Response Actions under the permit; it is not a violation and does not establish that any facility caused or contributed to this impairment.

Derived facility associations

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

Derived

Monrovia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

3M Monrovia Oral Care

Monrovia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Addmaster Corporation

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

El Monte · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Irwindale · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Air Logistics Corporation

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

All American Asphalt

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

All California Truck Auto Salvage

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

All New Stamping

El Monte · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

All United Wrecking Inc

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Alpha Auto Dismantling

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Amada Weld Tech

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Amada Weld Tech

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Amada Weld Tech

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

El Monte · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

AUSD Jim Leahy Maintenance Yard

Arcadia · Notice of Intent · 0.62 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Auto Parts Export Inc

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Avos Auto Wrecking

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Beyond Auto Recycler Inc

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Burnett and Son Meat Company Incorporated

Monrovia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

California Scratch Pad

Arcadia · No Exposure Certification · 0.78 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Christian Tse Designs & Mfg

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Clary Corporation

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

CytoImmune Therapeutics Inc

Duarte · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Danco Anodizing

Arcadia · Notice of Intent · 0.42 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Dave S Auto Truck Dismantlin

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

De La Huerta Auto Parts

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Decco US Post Harvest Inc

Monrovia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Driftwood Dairy Inc

El Monte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Duarte Auto Wrecking

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ducommun AeroStructures Inc

Monrovia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Foothill Transit

Arcadia · Notice of Intent · 0.78 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

GEM City Auto Parts Dismantl

Monrovia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Global Elevator Cabs Corp

Temple City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Golden Shield International Trading Company

Baldwin Park · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

GXO Logistics Worldwide LLC

San Bernardino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

H & S Enterprises Incorporated

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Hanson Aggregates LLC

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Hodgman Enterprises Inc

La Verne · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Holliday Rock Co Inc Irwindale 33

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Holliday Trucking Co Inc 14

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Interior Services

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Monrovia · No Exposure Certification · 0.92 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Jim Cass Construction Incorporated

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

John Chadwick Corporation

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Jonell Oil and Chemical

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

JR Engineering Industries

Arcadia · No Exposure Certification · 0.43 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

KGS Electronics Inc

Arcadia · No Exposure Certification · 0.33 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

KHUUS SAUSAGES INC

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Kin Ming Co USA

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Kruse and Son Inc

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

LA County Auto Dismantling

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

LKQ Pick A Part

Monrovia · Notice of Intent · 0.66 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Los Angeles Lighting Manufacturing Company

El Monte · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

LPD II Auto Wrecking

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Machinist Design

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Mask Off Co Inc

Monrovia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

MB Auto Dismantling

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Metro Division 24

Monrovia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Metro Division 9

El Monte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

MIRACLEWORKS INC

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Mission Kleensweep Products Inc

Irwindale · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Mulgrew Aircraft Components Inc

Monrovia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

My Auto Wrecking

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Old Dominion Freight Line Irwindale

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Orchid Orthopedic Solutions

Arcadia · No Exposure Certification · 0.97 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

P V Auto Dismantling Inc

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pacific Plate Brewing Compnay

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

El Monte · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Photon Spot Inc

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Pocket Latte LLC

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Production Lapping Company Inc

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Monrovia · No Exposure Certification · 0.55 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Relton Corporation

Arcadia · Notice of Intent · 0.69 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

RL Carriers IRW

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Robertsons Ready Mix Irwindale

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Roncelli Plastics Inc

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Roncelli Plastics Inc

Arcadia · No Exposure Certification · 0.43 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

S & V Auto Dismantling

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

S L S N Inc Peck Rd Gravel P

Monrovia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Anita Park

Arcadia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Sierra Madre City

Sierra Madre · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Silver Star Auto Wrecking

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Spragues Ready Mix

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Staar Surgical Company

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Stephen Rische Cabinets

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Tat Auto Dismantler

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

TESSEC Technology Services

Monrovia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

The Paper Mill Printers Fame Printing

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Arcadia · No Exposure Certification · 0.83 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

El Monte · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Transportation Yard

Monrovia · Notice of Intent · 0.80 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

TRIPLE 7 AUTO DISMANTLING INC

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Twin Turbo Auto Dismantling

Monrovia · Notice of Intent · 0.81 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

United Rock Products

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

US Auto Parts and Salvage

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

US Auto Wrecking

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Vinyl Technology Inc

Monrovia · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Wenteq Microwave

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Western Emulsions Inc

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Wingwalker Brewing

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

YLM Auto Wrecking

Duarte · 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.