California Stormwater Intelligence

← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Mill Creek (Prado Area)

Waterbody ID (WBID): CAR8012100019990211144540
County / counties: Riverside, San Bernardino
Regional Water Board: Regional Board 8 - Santa Ana Region
Waterbody type: River & Stream
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (3)

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	149157	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Middle Santa Ana River Watershed Bacterial Indicator TMDLs	—
NutrientsNutrients	77478	List on 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
Total Suspended Solids (TSS)Sediment	77479	List on 303(d) list (TMDL required list)	Original	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: Sep 16, 2026, 10:57 PM UTC
Waterbody ID: CAR8012100019990211144540
CALWNUM: 4801.21
WBD code: 180702030706
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: 1.55 Miles

Derived facility associations

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

Derived

51 Delivery Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Absolute Built Custom Cable Inc

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

ACE METAL SUPPLY INCORPORATED

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Acuity Brands Lighting

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Aerospace Comm Tooling Inc

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Affordable Plastics & Packaging Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Agromin Green Material Composting Operation

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Agromin OC Ontario Green Material Composting Operation

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Airtech International Incorporated

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Alger Precision Machining

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Allied Mechanical

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Alta Advanced Tech Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Alumin Art Plating Co Inc

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Amazon com Services LLC CNO5

Chino · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

AMD International Technologies LLC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Amrep Manufacturing Company LLC

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

AMTEK ENGINEERING INC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Anaheim Infrared Technologies

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Anker Trucking Inc

Ontario · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

APMD CLS Powder Coating Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Apollo Wood Recovery

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Arcman Pharma Co

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Berkeley Ergonomics Mattresses

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

BERNMAN MOLD & ENGINEERING INC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

BIONIME USA CORPORATION

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Brad Anderson Ent

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Brothers VW Machine Shop

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

BSF Technical Center

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Busy Bee Tooling

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

CAI Safety Systems Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Cal Micro Processing LLC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

CAL Precision Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

California Die Casting Inc

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

California Pony Cars

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

California Quality Plastics

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Cam Am Auto Salvage Inc

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Chaffey Transportation Department

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Chino · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

CPS Aviation Services

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Crown Paper Converting Inc

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

D Christjan Fine Cabinetry

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Delta Manufacturing Incorporated

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Dependable Highway Express Ontario

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Diegos Fabrication & Welding

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Direct Lighting Sales

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · Region 8 - Scrap Metal Permit

derived_watershed_association

Derived by California Stormwater Intelligence

Upland · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Durable Dies Incorporated

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

E & L QUALITY MACHINING

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Eagle Signs Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

EARLY BIRD EXPRESS

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Edelmann USA Inc

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

EGREEN TRANSPORT CORPORATION

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

ELITE PACKAGING & DISPLAY

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Empire sheet metal inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Emsco Precision

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

FedEx Ground CHIN

Chino · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Foundry Service & Supplies Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Freedom Wood Finishing

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

G and J Aircraft and Precision

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

GB Services Inc

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Gold Crest Industries

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Golden Pacific Food Inc

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

GP Manufacture Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Grove Lumber Bldg Supplies Inc

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Han Crete Prod Inc

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Health Plus Incorporated

Chino · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Holliday Rock Ontario 28

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Hoover Properties incorporated

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

hubergroup USA Inc

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ikon Industries LLC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Industrial Maintenance Assistance Inc

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Inland Powder Coating Corp

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Inland Signs Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Innovative Architectural Solutions Inc

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Jensen Precast Brooks Products

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Upland · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

JW Fulfillment LAX Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

K & Z CABINET CO INC

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Karat by Lollicup

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Kellogg Garden Products

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Kennedy Industries

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Kuder Engineering Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

LB Madole Engineering

Chino · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Legacy Supply Chain Services II

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

LG Products Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Lighting Resources LLC

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Lion Exterior products

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Luchador Brewing Company

Chino Hills · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Lynwood Pattern Service

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Machanix Fab Inc

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

MAGIA United Inc

Ontario · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Main Street Fibers

Ontario · Region 8 - Scrap Metal Permit

derived_watershed_association

Derived by California Stormwater Intelligence

Main Street Recycling

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Manley Laboratories Inc

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Melmarc Products Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Melu Frame Corporation

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Moonlight Research & Development

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Morehouse Cowles

Chino · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

NAK Graphic Signs Inc dba FASTSIGNS

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

National Distribution Centers LLC

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

National Distribution Centers LLC

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

National Distribution Centers LLC

Chino · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

National Distribution Centers LLC

Chino · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

National Distribution Centers LLC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

National Distribution Centers LLC

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

National Distribution Centers LLC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Nava Ornamental

Ontario · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Newport Thin Film Laboratory

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Office Master Incorporated

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario Montclair School District

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

ONUS Global Fulfillment Solutions LLC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Pacific Auto Wrecking

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

PACIFIC AUTO WRECKING

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Patton Sales Corp

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Patton Sales Corp

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pentair Water Pool and Spa Inc

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Performance Water Jet Incorporated

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Poly Extrusions Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Polymer Composites Inc

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

PRC Composites LLC

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pretium Packaging

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

PreZero US Services LLC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Primos Cylinder Head Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Pro Five Brewing Company LLC

Upland · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

PSA Print Group

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Upland · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Quality Coachworks LLC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Quality Marble and Granite

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Rebel Brands Inc

Upland · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

ReConserve of California Ontario Inc

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Recycled Wood Products-4

Ontario · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

REDLINE PRECISION MACHINING INCORPORATED

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Redwood Products

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Rescue Brewing Company

Upland · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

RFC WIRE FORMS INC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

RI Industries Inc

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Ricoh Electronics Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Route 66 Hauling and Junk Removal

Upland · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

RyKO Plastic Products Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Clara Plastic Containers

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Shirlee Industries Incorporated

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Sika Corporation

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Sky Systems Comapny Incorporated

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Solo Cup Operating Corporation

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Square Mart INC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

StorAmerica Ontario

Ontario · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Summers Brothers Racing

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

TE Connectivity

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Tech Industrial Machining Corp

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Temecula Precision Machine Works Incorporated

Ontario · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

The Outdoor Plus Company Inc

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Triple L Trailers

Chino · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Upland - Campus Ave.

Upland · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

US ELOGISTICS SERVICE CORP

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Walkers air brakes

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Walmart Distribution Center 8103

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Warren Letterpress and Graphics

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

WARRIOR SYSTEMS MANUFACTURING INC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

WEST COAST SELF STORAGE ONTARIO

Ontario · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Western Pallet Supply & Logistics LLC

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Western States Wholesale

Ontario · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Wilhelmsen Ships Service

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Wilson Products & Research Inc

Chino · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Wingtat Cargo USA INC

Ontario · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Yillik Precision Carbides

Ontario · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ontario · No Exposure Certification

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.