Waterbody profile

Official Water Board record · 2026 cycle

Los Angeles River Reach 1 (Estuary to Carson Street)

Waterbody ID (WBID): CAR4051200019990202083037
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 (24)

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
AluminumMetals	153899	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
AmmoniaNutrients	68390	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Los Angeles River Nitrogen (11)	—
BifenthrinPesticides	138026	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
CopperMetals	137984	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Dominguez, LA/LB Harbors, San Pedro Bay Metals (75 & 78), toxics(73a) and PAHs (74)	—
Copper, DissolvedMetals	68262	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Los Angeles River Metals (13)	—
CyanideToxic Inorganics	137985	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
CyfluthrinPesticides	138031	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
CypermethrinPesticides	138027	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
DeltamethrinPesticides	138032	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
FipronilPesticides	138020	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ImidaclopridPesticides	138023	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Indicator BacteriaPathogens	150302	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)	—
IronMetals	137994	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
LeadMetals	137995	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)	—
Nutrients (Algae)Nutrients	69238	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Los Angeles River Nitrogen (11)	—
Oil and GreaseNuisance	138002	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
PermethrinPesticides	138041	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
pHOther Cause	138006	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	Los Angeles River Nitrogen (11)	Low
ProfenofosPesticides	137969	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
PyrethroidsPesticides	138019	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ToxicityTotal Toxics	138015	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
TrashTrash	72357	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Los Angeles River Trash (12)	—
ZincMetals	138018	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)	—
Zinc, DissolvedMetals	68466	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	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: CAR4051200019990202083037
CALWNUM: 4412.1
WBD code: 180701050402
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: 3.38 Miles

Facilities with an NAL exceedance for a listed pollutant (158)

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

25th Street4 19I026030

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

75S Corp FMC Metals4 19I022308

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

A B Sandblast Co4 19I017126

Aluminum, Iron, pH, Zinc · most recent exceedance RY 2022 · association: derived watershed association

AAA Plating Inspection Inc4 19I002783

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

Aacon Auto Parts Wrecking4 19I017083

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

Abantos Auto Wrecking4 19I030044

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

Accurate Anodizing Inc4 19I003307

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

Ace Clearwater Ent4 19I017994

Oil and Grease · most recent exceedance RY 2021 · association: derived watershed association

ADAMS AUTO WRECKING4 19I028293

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

Advance Pipe Bending and Engineering Company4 19I027547

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

Aerocraft Heat Treating Co In4 19I000098

Copper, Iron, Lead, Oil and Grease, pH · most recent exceedance RY 2025 · association: derived watershed association

Ajax Forge Co4 19I000107

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

Alloy Processing4 19I024577

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

American Industrial Services4 19I024802

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

Anadite California Restoration Trust4 19I000667

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

Anaplex Corporation4 19I003487

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

Arcadia Inc4 19I021228

Aluminum, Iron, Oil and Grease, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Atlas Iron Metal4 19I007206

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

Avalanche Used Auto Parts4 19I028994

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

Barkens Hardchrome4 19I019098

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

Basic Fibers Inc Bargain Ctr4 19I001360

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

Bender CCP4 19I028079

Aluminum, Oil and Grease, Zinc · most recent exceedance RY 2024 · association: derived watershed association

Best Auto Wrecking Recycling4 19I020548

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

BJ Used Auto Parts Dismantlers Inc4 19I020451

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

Blue Circle Corp4 19I027862

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

Bodycote Thermal Processing4 19I021600

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

BT EQUIPMENT COMPANY INC4 19I004736

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

Buddy Bar Casting Corp4 19I016400

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

C & M Metals Inc4 19I003733

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

CA Metal X4 19I000881

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

Carlton Forge Works4 19I001365

Aluminum, Copper, Iron, Oil and Grease, Zinc · most recent exceedance RY 2021 · association: derived watershed association

Castle Metals Aerospace4 19I024276

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

Central LA Recycling Transfer Station4 19I018974

Aluminum, Iron, Lead, Oil and Grease, Zinc · most recent exceedance RY 2017 · association: derived watershed association

Chemco Products Company4 19I003939

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

City Fibers Inc4 19I018643

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

Cocos Auto Dismantler Corp4 19I021965

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

Compton Ready Mix4 19I004086

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

Compton Recycling and Transfer Station4 19I022479

Aluminum, Copper, Iron, Zinc · most recent exceedance RY 2016 · association: derived watershed association

Compton Steel Co Inc4 19I027412

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

Continental Forge Co4 19I009698

Aluminum, Iron, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Contractors Cargo Company4 19I010494

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

CR Laurence Co Inc4 19I023950

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

CR Laurence Co Inc4 19I023967

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

D and T Recycling4 19I028662

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

Delgado Brothers Co4 19I013674

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

Dickson Testing Company4 19I009315

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

Dodge City4 19I019412

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

Downtown Auto Dismantlers Inc4 19I023612

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

Dywidag Systems International4 19I026025

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

E M E Inc4 19I000346

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

El Rey Auto Parts Corp4 19I026623

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

Engineered Coatings4 19I027106

Oil and Grease, pH · most recent exceedance RY 2025 · association: derived watershed association

Evoqua Water Technologies LLC4 19I024304

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

Fabri Cote4 19I028960

Oil and Grease, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

FedEx LAXRT4 19I026336

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

Fenico LLC4 19I029137

Aluminum, Copper, Iron, pH · most recent exceedance RY 2025 · association: derived watershed association

Fleetwood Continental Inc4 19I009313

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

Flo Mac Inc4 19I026285

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

FLOWSERVE4 19I009855

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

Foster Farms Fernandos Foods4 19I022320

Oil and Grease, pH · most recent exceedance RY 2025 · association: derived watershed association

FS Precision Tech LLC4 19I019377

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

GL Veneer4 19I027915

Oil and Grease · most recent exceedance RY 2019 · association: derived watershed association

golden state eng4 19I025444

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

Granitize4 19I019718

Oil and Grease · most recent exceedance RY 2019 · association: derived watershed association

Griswold Industries dba Soundcast4 19I028438

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

Grow More Inc4 19I026791

Copper, Iron, Zinc · most recent exceedance RY 2016 · association: derived watershed association

Hanson Aggregates LLC4 19I002487

Copper, Oil and Grease, pH, Zinc · most recent exceedance RY 2022 · association: derived watershed association

Hawk Industries4 19I015453

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

Henkel Electronic Materials LLC4 19I022187

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

Hexpol Compounding4 19I028409

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

Hughes Bros Aircrafters4 19I012943

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

International Metal Trading Inc4 19I027942

Aluminum, Iron, pH, Zinc · most recent exceedance RY 2023 · association: derived watershed association

International Paper Compton4 19I021728

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

j & h auto wrecking4 19I026774

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

J & J Trade LLC4 19I027880

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

JBI Inc4 19I006166

Oil and Grease · most recent exceedance RY 2016 · association: derived watershed association

Johns Manville Corp4 19I013959

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

JRS Resources Inc4 19I025071

Aluminum, Iron, Oil and Grease · most recent exceedance RY 2021 · association: derived watershed association

Kramer Metals Inc4 19I022418

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

LAUSD San Julian Garage4 19I024476

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

LEGACY FRAMES4 19I029098

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

Lekos Dye Finishing4 19I023356

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

Leyva Top Line Recycling Center4 19I026527

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

Long Beach Transit Anaheim Street Facility4 19I010593

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

Los Angeles Times4 19I016013

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

Lynwood Auto Dismantling Inc4 19I022537

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

Magnesium Alloy Product Co4 19I004719

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

Marko Metals4 19I024771

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

Mattco Forge Inc4 19I025496

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

MEC Auto Dismantling4 19I026460

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

Medway Plastics Corp4 19I020752

Oil and Grease · most recent exceedance RY 2022 · association: derived watershed association

Metro Division 114 19I000496

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

Metro Division 24 19I000487

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

Modern Concepts Inc4 19I018552

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

Monico Alloys4 19I000068

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

Monico Alloys Inc4 19I019156

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

Monico Alloys Incorporated4 19I026686

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

Morrells Electro Plating Inc4 19I021937

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

Mr Ford Auto Salvage4 19I030021

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

NA Gonzalez Enterprises Inc4 19I025148

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

Neptune Foods4 19I004283

Oil and Grease, pH · most recent exceedance RY 2024 · association: derived watershed association

Nucor Warehouse Systems4 19I021543

Aluminum, Iron, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Old Country Millwork Inc4 19I023292

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

One Stop Recycling4 19I025317

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

Optimum Recycling Inc4 19I028031

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

Orion Plastics4 19I020826

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

Oscars Cores4 19I027760

Aluminum, Iron · most recent exceedance RY 2018 · association: derived watershed association

Owens Corning4 19I003711

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

Pacific Pipeline Systems LLC4 19I015189

Iron, Oil and Grease, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Pallet Masters Inc4 19I014410

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

Paramount Dairy Inc4 19I025089

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

Paramount MRF & Truck Yard4 19I029747

Aluminum, Iron · most recent exceedance RY 2025 · association: derived watershed association

Perfection Machine4 19I007042

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

Porche Foreign Auto Wrecking4 19I011749

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

Precision Wire Products4 19I023421

Aluminum, Iron, Oil and Grease, pH, Zinc · most recent exceedance RY 2023 · association: derived watershed association

Press Forge4 19I002338

Aluminum, Iron, pH, Zinc · most recent exceedance RY 2022 · association: derived watershed association

Pro Cast Industries4 19I027122

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

Punch Press Products Inc4 19I000335

Aluminum, Iron, Zinc · most recent exceedance RY 2015 · association: derived watershed association

R C Recycle4 19I018979

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

Ralphs Grocery Central Facility4 19I000841

Oil and Grease, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Reyes Coca Cola Bottling LLC4 19I027443

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

Robertsons Ready Mix Paramount4 19I015296

Iron, pH · most recent exceedance RY 2016 · association: derived watershed association

Rosecrans Used Auto Parts Dism4 19I018279

Aluminum, Iron, Oil and Grease, Zinc · most recent exceedance RY 2020 · association: derived watershed association

RS Processing Co Inc4 19I021078

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

SA Recycling4 19I022546

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

SA Recycling4 19I021115

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

SA Recycling4 19I021111

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

Samson Auto Salvage4 19I010670

Aluminum, Iron, Oil and Grease · most recent exceedance RY 2023 · association: derived watershed association

Sandee Plastic Extrusions4 19I020801

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

Sanders Service Inc4 19I014783

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

Saputo Cheese Usa Inc4 19I018512

Copper, Oil and Grease, pH · most recent exceedance RY 2021 · association: derived watershed association

Saroyan Lumber Co Inc4 19I027318

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

Service Plating4 19I009523

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

So Cal Auto Wreck4 19I002970

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

Soelzer Inc dba Firestone Fabricators4 19I028474

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

Soto Auto Dismantling4 19I019687

Aluminum, Iron · most recent exceedance RY 2016 · association: derived watershed association

Southeast Towing and Salvage Inc4 19I010215

Aluminum, Copper, Iron, Lead · most recent exceedance RY 2020 · association: derived watershed association

Southern Cal Trans4 19I024655

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

Sungro Products LLC4 19I021631

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

Surface Treatment Inspection4 19I004459

Aluminum, Iron, Oil and Grease, pH, Zinc · most recent exceedance RY 2023 · association: derived watershed association

Sweetener Products Co Trucking Division4 19I014854

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

Techni Cast Corp4 19I001231

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

Trepanning Specialties Inc4 19I027152

Aluminum, Iron, Oil and Grease, Zinc · most recent exceedance RY 2024 · association: derived watershed association

Tri Process4 19I026585

Aluminum, Iron · most recent exceedance RY 2025 · association: derived watershed association

Tytan Metals4 19I028621

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

Tzeng Long Usa Inc4 19I015432

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

Universal Molding Co Inc4 19I014397

Aluminum, Copper, Iron, Oil and Grease, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Universal Molding Company Inc4 19I026222

Aluminum, Oil and Grease, Zinc · most recent exceedance RY 2021 · association: derived watershed association

Universal Warehouse Company4 19I030042

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

USA Waste of California Inc4 19I012082

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

Valence Surface Technologies dba Triumph Processing Inc4 19I028084

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

Valence Surface Technologies dba Triumph Processing Inc4 19I028085

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

Van Dyk Tank Lines Inc Cool Transports4 19I029036

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

Waste Resource Inc4 19I025295

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

Weber Metals4 19I000406

Aluminum, Iron, Oil and Grease, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

World Oil Environmental Services4 19I023114

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

World Oil Environmental Services4 19I022974

Oil and Grease, pH · most recent exceedance RY 2016 · association: derived watershed association

Zamboni Company USA Inc4 19I021129

Copper, pH · most recent exceedance RY 2025 · 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

25th Street

Los Angeles · Notice of Intent

derived_watershed_association