Waterbody profile

Official Water Board record · 2026 cycle

Los Angeles River Reach 6 (Above Sepulveda Flood Control Basin)

Waterbody ID (WBID): CAR4052100019990202110610
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 (9)

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
ChlordanePesticides	138599	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ChlorideSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	138600	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
CopperMetals	138601	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Los Angeles River Metals (13)	—
Indicator BacteriaPathogens	150306	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Los Angeles River Pathogens (15)	—
SeleniumMetals	138602	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Los Angeles River Metals (13)	—
SulfatesToxic Inorganics	138603	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Total Dissolved SolidsSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	138604	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ToxicityTotal Toxics	97384	List on 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
ZincMetals	138605	List on 303(d) list (being addressed by USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Los Angeles River Metals (13)	—

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: CAR4052100019990202110610
CALWNUM: 4412.21
WBD code: 180701050201, 180701050208
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: 7 Miles

Facilities with an NAL exceedance for a listed pollutant (75)

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

Aaron Industrial Recycling4 19I025731

Copper, Zinc · most recent exceedance RY 2017 · association: derived watershed association

Active Recycling Center 24 19I023962

Copper, Zinc · most recent exceedance RY 2017 · association: derived watershed association

Aerojet Rocketdyne Inc4 19I024299

Zinc · most recent exceedance RY 2020 · association: derived watershed association

Alert Plating Company Inc4 19I014826

Copper · most recent exceedance RY 2023 · association: derived watershed association

Alfred S Auto Dismantling4 19I012688

Zinc · most recent exceedance RY 2019 · association: derived watershed association

All State Auto Dismantling4 19I020693

Copper, Zinc · most recent exceedance RY 2025 · association: derived watershed association

American Ironworks Manufacturing Inc4 19I026635

Zinc · most recent exceedance RY 2020 · association: derived watershed association

Anheuser Busch LLC4 19I002616

Zinc · most recent exceedance RY 2025 · association: derived watershed association

Anthony Inc4 19I024223

Zinc · most recent exceedance RY 2021 · association: derived watershed association

Anwright Corp4 19I015882

Zinc · most recent exceedance RY 2015 · association: derived watershed association

Apex Surplus Corporation4 19I024703

Copper, Zinc · most recent exceedance RY 2019 · association: derived watershed association

ARTS AUTO SALVAGE4 19I026756

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

Atlanta Auto Dismantling Inc4 19I027753

Zinc · most recent exceedance RY 2021 · association: derived watershed association

Automation Plating Corp4 19I012038

Copper, Zinc · most recent exceedance RY 2019 · association: derived watershed association

Automation Plating Corp4 19I000147

Copper, Zinc · most recent exceedance RY 2024 · association: derived watershed association

Avibank Manufacturing Inc4 19I025480

Copper, Zinc · most recent exceedance RY 2024 · association: derived watershed association

Bells Auto Parts Wrecking4 19I023187

Copper · most recent exceedance RY 2019 · association: derived watershed association

Blue Diamond Materials Sun Valley4 19I015085

Copper, Zinc · most recent exceedance RY 2024 · association: derived watershed association

Bradley4 19I026031

Copper, Zinc · most recent exceedance RY 2022 · association: derived watershed association

Burbank City Pub Ser Dept4 19I000949

Copper, Zinc · most recent exceedance RY 2023 · association: derived watershed association

Burbank City Pub Works Maintenance Yard4 19I000531

Zinc · most recent exceedance RY 2025 · association: derived watershed association

Burbank Recycle Center4 19I023661

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

Burbank Water Reclamation Plant4 19I000724

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

C A Buchen Corp.4 19I000355

Zinc · most recent exceedance RY 2019 · association: derived watershed association

CARTER PLATING4 19I028563

Zinc · most recent exceedance RY 2021 · association: derived watershed association

Chase Auto4 19I011652

Copper, Zinc · most recent exceedance RY 2025 · association: derived watershed association

City of Burbank Landfill No 34 19I000530

Copper, Zinc · most recent exceedance RY 2025 · association: derived watershed association

City of Glendale Grayson Power Plant4 19I001606

Copper · most recent exceedance RY 2022 · association: derived watershed association

CM Topsoil Inc4 19I025235

Zinc · most recent exceedance RY 2023 · association: derived watershed association

Connell Processing Inc4 19I001205

Zinc · most recent exceedance RY 2019 · association: derived watershed association

Dillon Aircraft Deburring4 19I016576

Zinc · most recent exceedance RY 2015 · association: derived watershed association

Eagle Recycling4 19I024737

Copper · most recent exceedance RY 2024 · association: derived watershed association

El Chicos Dismantler4 19I029300

Zinc · most recent exceedance RY 2024 · association: derived watershed association

EM Corp EM Coating Services4 19I018061

Zinc · most recent exceedance RY 2024 · association: derived watershed association

GI Trucking dba Estes Express4 19I020941

Copper, Zinc · most recent exceedance RY 2021 · association: derived watershed association

Hanmar LLC4 19I026554

Zinc · most recent exceedance RY 2020 · association: derived watershed association

Harouts Quality Used Auto4 19I011903

Copper · most recent exceedance RY 2019 · association: derived watershed association

Hawker Pacific Inc4 19I030121

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

Honda Foreign and Parts Quote4 19I023016

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

Hope Plastics Co Inc4 19I020745

Zinc · most recent exceedance RY 2019 · association: derived watershed association

International Auto Wrecking LLC4 19I002693

Copper · most recent exceedance RY 2019 · association: derived watershed association

JMI Steel Inc4 19I030187

Zinc · most recent exceedance RY 2025 · association: derived watershed association

K C Nissan Auto Dismantling4 19I014510

Copper · most recent exceedance RY 2020 · association: derived watershed association

KC Collision Center4 19I030240

Copper · most recent exceedance RY 2024 · association: derived watershed association

Klune Industries Inc4 19I021567

Copper, Zinc · most recent exceedance RY 2024 · association: derived watershed association

LA City Tillman Water Rec Plan4 19I005179

Copper, Zinc · most recent exceedance RY 2020 · association: derived watershed association

LKQ Pick Your Part4 19I005132

Copper · most recent exceedance RY 2019 · association: derived watershed association

Los Angeles Dismantler IPD Inc4 19I023007

Copper · most recent exceedance RY 2016 · association: derived watershed association

m & r auto parts4 19I028902

Zinc · most recent exceedance RY 2023 · association: derived watershed association

Metro Division 154 19I000500

Copper, Zinc · most recent exceedance RY 2019 · association: derived watershed association

Norris Auto Dismantling4 19I016887

Copper, Zinc · most recent exceedance RY 2021 · association: derived watershed association

Number 1 Recycling4 19I001217

Copper, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Number 1 Recycling4 19I017245

Copper · most recent exceedance RY 2021 · association: derived watershed association

Prime Plating4 19I021814

Copper, Zinc · most recent exceedance RY 2024 · association: derived watershed association

Pyramid Auto Wrecking4 19I020387

Zinc · most recent exceedance RY 2023 · association: derived watershed association

Rainbow Auto Dismantling4 19I017671

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

SA Recycling4 19I021122

Copper, Zinc · most recent exceedance RY 2023 · association: derived watershed association

Senior Aerospace SPP4 19I011647

Copper, Zinc · most recent exceedance RY 2021 · association: derived watershed association

SHD Auto4 19I018610

Zinc · most recent exceedance RY 2020 · association: derived watershed association

Smark co4 19I023528

Zinc · most recent exceedance RY 2021 · association: derived watershed association

Sun Valley Paper Stock Inc4 19I004515

Zinc · most recent exceedance RY 2016 · association: derived watershed association

Sun Valley Truck Yard4 19I003497

Copper · most recent exceedance RY 2016 · association: derived watershed association

Swedish Auto Salvage Parts4 19I026427

Copper · most recent exceedance RY 2022 · association: derived watershed association

Tempco Engineering4 19I025840

Zinc · most recent exceedance RY 2019 · association: derived watershed association

Thompson Gundrilling Inc4 19I014804

Copper, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Timely Industries4 19I027703

Zinc · most recent exceedance RY 2021 · association: derived watershed association

TM Scrap Metals Inc4 19I023441

Copper, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Toyota World Inc4 19I029210

Zinc · most recent exceedance RY 2022 · association: derived watershed association

Tuxford Recycling4 19I019664

Copper, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Union Pacific Gemco Van Nuys4 19I025879

Copper, Zinc · most recent exceedance RY 2020 · association: derived watershed association

Universal Auto Parts Dismantling Inc4 19I018919

Zinc · most recent exceedance RY 2020 · association: derived watershed association

UPS Van Nuys CAVAN4 19I002095

Zinc · most recent exceedance RY 2019 · association: derived watershed association

Valley Generating Station4 19I004624

Copper, Zinc · most recent exceedance RY 2018 · association: derived watershed association

Youngs Iron Works4 19I014213

Zinc · most recent exceedance RY 2019 · association: derived watershed association

Zavala Family Inc DBA C&S Metal4 19I027147

Copper · most recent exceedance RY 2018 · 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

A & C Electronics

Northridge · No Exposure Certification

derived_watershed_association