Waterbody profile

Official Water Board record · 2026 cycle

Prado Basin Management Zone

Waterbody ID (WBID): CAW8012100019991014103600
County / counties: Riverside, San Bernardino
Regional Water Board: Regional Board 8 - Santa Ana Region
Waterbody type: Wetland, Freshwater
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (1)

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
pHOther Cause	80650	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: Aug 21, 2026, 12:44 AM UTC
Waterbody ID: CAW8012100019991014103600
CALWNUM: 4801.210000, 4801.250000
WBD code: 180702030606, 180702030703, 180702030705, 180702030706, 180702030804
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: 11105.15 Acres

Facilities with an NAL exceedance for a listed pollutant (59)

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

Academy Doors8 36I024032

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

Acorn Plastics8 36I026414

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

Aerospace Comm Tooling Inc8 36I018958

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

Alexis Oil Company8 33I026022

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

Angelus Block Co Inc8 36I017346

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

Angelus Block Co Inc8 36I004551

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

B and D Litho California8 36I025251

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

BrassCraft Manufacturing Company Corona8 33I010438

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

Cable Airport8 36I001965

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

CARGO SOLUTION EXPRESS INC8 36I027678

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

Chino Hauling8 36I015859

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

Colton Sanitary Landfill8 36I030035

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

Eagle Roofing Products Inc8 36I017075

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

EnCorr Sheets LLC8 36I027125

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

First Student Inc 204148 33I006607

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

Fontana Ready Mix8 36I001911

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

Fontana Wood Treating Inc8 36I025784

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

Foothill and Juniper8 36I027644

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

Fruit Growers Supply Company8 36I009672

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

Husk ITT Corporation8 33I013590

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

idX Los Angeles8 36I027008

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

Imperial Pipe8 36I023682

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

Insulfoam8 36I020854

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

JCs Grease Buyers8 33I024356

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

Leslies Poolmart Inc8 36I028718

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

LKQ Pick A Part8 33I023435

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

Luxfer Inc8 33I007059

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

Magnolia Foods LLC8 36I029895

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

Mid Valley Sanitary Landfill8 36I005249

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

Mira Loma Yard8 33I022278

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

Mondelez Global LLC8 36I027297

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

Nestle Distribution Center8 33I024624

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

Pacific Corrugated8 36I015155

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

Pacific Forge8 36I003156

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

Pacific Steel Group8 36I027765

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

PolyAir8 33I027864

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

Quantix SCS LLC8 36I028072

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

RA Nelson MRF Transfer Station8 33I021996

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

Refresco Beverages US Inc8 36I022802

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

Republic Bag Inc8 33I025792

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

Reyes Coca Cola Bottling LLC8 36I027421

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

Rise Baking Company LLC8 36I025877

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

Riverside Transit Agency8 33I016286

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

RONPAK8 33I026761

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

RW Lyall8 33I028026

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

Sierra Aluminum8 36I012005

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

Sierra Building Products8 36I016409

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

Steel Unlimited Inc8 36I021983

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

Target T3806 T38078 36I020108

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

TI Wire8 36I003788

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

Tristar FLC Inc8 36I029161

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

Tryad Properties Inc8 36I030167

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

TST Inc8 36I001222

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

UFP Riverside LLC8 33I015505

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

United Road Services8 36I021162

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

Walker West LLC8 36I030053

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

West Colton Yard8 36I004573

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

West Valley MRF8 36I013750

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

WestRock CP LLC8 33I023232

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

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

101 Vertical Fabrication Inc

Fontana · Notice of Intent

derived_watershed_association