← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Peck Road Park Lake

Waterbody ID (WBID)
CAL4053100020000303195323
County / counties
Los Angeles
Regional Water Board
Regional Board 4 - Los Angeles Region
Waterbody type
Lake & Reservoir
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (6)

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

Pollutant / stressorDecision IDFinal listing decisionDecision statusTMDL requirement statusTMDL projectTMDL priority
Chlordane (tissue)Pesticides99527Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Original5B — Addressed by USEPA-approved TMDLEcho, Lincoln, Peck, Calabasas Eutrophications (17) and Trash (16)—
DDT (tissue)Pesticides72825Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Original5B — Addressed by USEPA-approved TMDLEcho, Lincoln, Peck, Calabasas Eutrophications (17) and Trash (16)—
MercuryMetals149760List on 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
OdorNuisance69007List on 303(d) list (being addressed by USEPA approved TMDL)Original5B — Addressed by USEPA-approved TMDLEcho, Lincoln, Peck, Calabasas Eutrophications (17) and Trash (16)—
Organic Enrichment/Low Dissolved OxygenNutrients69758List on 303(d) list (being addressed by USEPA approved TMDL)Original5B — Addressed by USEPA-approved TMDLEcho, Lincoln, Peck, Calabasas Eutrophications (17) and Trash (16)—
TrashTrash68056List on 303(d) list (being addressed by USEPA approved TMDL)Original5B — Addressed by USEPA-approved TMDLEcho, Lincoln, Peck, Calabasas Eutrophications (17) and Trash (16)—

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
Sep 16, 2026, 10:57 PM UTC
Waterbody ID
CAL4053100020000303195323
CALWNUM
4412.31
WBD code
180701050302
Geometry
Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)

Location

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

Loading map…
Watershed
—
Assessed size
79.93 Acres

Derived facility associations

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

Derived
3M Company

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

750 Recyclers

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

Addmotor Tech

El Monte · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Admixtures Inc

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

Aras Recycling

El Monte · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

AUSD Jim Leahy Maintenance Yard

Arcadia · Notice of Intent

derived_watershed_association

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

B AND H SIGNS

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 · 0.43 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

Coherent Inc

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

derived_watershed_association

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

F A S T Inc

Irwindale · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Foothill Transit

Arcadia · Notice of Intent · 0.28 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 · 0.84 km away

derived_nearby_in_watershed

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

Harbor Seal

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

Irongate

Monrovia · No Exposure Certification

derived_watershed_association

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

John Payne

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

derived_watershed_association

Derived by California Stormwater Intelligence

KGS Electronics Inc

Arcadia · No Exposure Certification · 0.70 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 · 0.22 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

derived_watershed_association

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

PacTrack Inc

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

Radcal Corp

Monrovia · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Relton Corporation

Arcadia · Notice of Intent

derived_watershed_association

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 · 0.10 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Russ Recycling

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

S J Auto

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

SA Recycling

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

Theragent

Arcadia · No Exposure Certification · 0.50 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

TOP AUTO PARTS

Duarte · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

TOSSWARE

El Monte · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Transportation Yard

Monrovia · Notice of Intent

derived_watershed_association

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 · 0.30 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.