← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Guadalupe River

Waterbody ID (WBID)
CAR2054005019980928160437
County / counties
Santa Clara
Regional Water Board
Regional Board 2 - San Francisco Bay Region
Waterbody type
River & Stream
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (8)

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
Benthic Community EffectsOther Cause154157List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
BifenthrinPesticides142015List on 303(d) list (being addressed by USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLSan Francisco Bay Urban Creeks Diazinon
ChlordanePesticides141983List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
DiazinonPesticides141990Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLSan Francisco Bay Urban Creeks Diazinon
MercuryMetals145439Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLGuadalupe River Watershed Mercury
PyrethroidsPesticides142010List on 303(d) list (being addressed by USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLSan Francisco Bay Urban Creeks Diazinon
ToxicityTotal Toxics142007List on 303(d) list (being addressed by USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLSan Francisco Bay Urban Creeks Diazinon
TrashTrash87599Do Not Delist from 303(d) list (being addressed with action other than TMDL)Original5C Addressed by action other than a TMDL

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
CAR2054005019980928160437
CALWNUM
2205.300800, 2205.400500, 2205.500400
WBD code
180500030301, 180500030302, 180500030303, 180500030304, 180500041001
Geometry
Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)

Location

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

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Watershed
Assessed size
19.33 Miles

Derived facility associations

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

Derived
1999 Stone LLC

San Jose · Notice of Intent · 0.62 km away

derived_receiving_water

Derived by California Stormwater Intelligence

6341 San Ignacio

San Jose · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

A German Auto Wrecking Inc

San Jose · Notice of Intent · 0.65 km away

derived_receiving_water

Derived by California Stormwater Intelligence

ABC CARS

San Jose · No Exposure Certification · 0.76 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Acrylonics LLC

San Jose · No Exposure Certification · 0.87 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Advanced Surface Finishing Inc

San Jose · Notice of Intent · 0.90 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Advantest America Inc

San Jose · No Exposure Certification · 0.72 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Aheadtek

San Jose · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

All Cities Former Landfill

Hayward · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

All Clean Hazardous Waste Removal

San Jose · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Amazon com Services LLC DXC8

San Jose · Notice of Intent · 0.96 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Amex Plating Inc

Santa Clara · Notice of Intent · 0.59 km away

derived_receiving_water

Derived by California Stormwater Intelligence

APCT INC

Santa Clara · Notice of Intent · 0.47 km away

derived_receiving_water

Derived by California Stormwater Intelligence

ASML

San Jose · No Exposure Certification · 0.43 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Asphalt Shingle Recyclers

Oakland · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Averatek Corp

Santa Clara · Notice of Intent · 0.64 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Bee Green Recycling and Supply LLC

Oakland · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Biomerics NLE

Santa Clara · No Exposure Certification · 0.24 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Blue Line Transfer Station

South San Francisco · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Boat Yard at Grand Marina

Alameda · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

British Motorsports Inc

Campbell · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Bruker Inc

San Jose · No Exposure Certification · 0.92 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Bruker Scientific

San Jose · No Exposure Certification · 0.75 km away

derived_receiving_water

Derived by California Stormwater Intelligence

C F Gagliasso Tr

Santa Clara · Notice of Intent · 0.22 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Cargill Inc Redwood City

Redwood City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

CEMOF

San Jose · Notice of Intent · 0.67 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Central Concrete

San Jose · Notice of Intent · 0.93 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Central Concrete Supply

San Jose · Notice of Intent · 0.93 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Central Concrete Supply

San Jose · Notice of Intent · 0.92 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Central Concrete Supply

Redwood City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Cirexx International

Santa Clara · Notice of Intent · 0.92 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Cisco Systems Inc Site 2 1

San Jose · No Exposure Certification · 0.41 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Cisco Systems Inc Site 3

San Jose · No Exposure Certification · 0.68 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Coast Crane Co

San Leandro · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Coterie Cellars Inc

San Jose · No Exposure Certification · 0.67 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Crystallume Corp

Santa Clara · No Exposure Certification · 0.55 km away

derived_receiving_water

Derived by California Stormwater Intelligence

CSL Operating LLC

Santa Clara · Notice of Intent · 0.71 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Darko Precision Inc

Santa Clara · No Exposure Certification · 0.53 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Data Physics Corporation

Santa Clara · No Exposure Certification · 0.22 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Enablence USA Components INC

Fremont · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

EPZ INC

Santa Clara · No Exposure Certification · 0.31 km away

derived_receiving_water

Derived by California Stormwater Intelligence

FedEx Freight Hayward

Hayward · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

FedEx Freight Santa Clara

Santa Clara · Notice of Intent · 0.15 km away

derived_receiving_water

Derived by California Stormwater Intelligence

FormFactor San Jose

San Jose · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Garratt Callahan Company

Burlingame · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Gridtential Energy Inc

Santa Clara · No Exposure Certification · 1.00 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Guadalupe Division

San Jose · Notice of Intent · 0.39 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Guadalupe Rubbish Disposal INDSTW

San Jose · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Hallcon DBA Loop Transportation

San Jose · Notice of Intent · 0.99 km away

derived_receiving_water

Derived by California Stormwater Intelligence

IMG INTA LLC

Santa Clara · No Exposure Certification · 0.43 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Ingenium Group LLC

Santa Clara · No Exposure Certification · 0.46 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Jabil Inc

San Jose · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Kuprion Inc

San Jose · No Exposure Certification · 0.93 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Lam Research Corporation Fremont Campus

Fremont · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Lexington Quarry

Los Gatos · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Los Esteros Critical Energy Facility LLC

San Jose · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Lumentum Operations LLC

San Jose · Notice of Intent · 0.91 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Lumileds LLC

San Jose · Notice of Intent · 0.21 km away

derived_receiving_water

Derived by California Stormwater Intelligence

LuxBus America San Jose

San Jose · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Mattson Technology

Fremont · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Maxar Space LLC

San Jose · Notice of Intent · 0.82 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Maxeon Americas Inc

San Jose · Notice of Intent · 0.47 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Mineta San Jose International Airport

San Jose · Notice of Intent · 0.07 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Molecular Devices

San Jose · No Exposure Certification · 0.87 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Momentus Inc

San Jose · No Exposure Certification · 0.61 km away

derived_receiving_water

Derived by California Stormwater Intelligence

NeoPhotonics Corporation

San Jose · Notice of Intent · 0.89 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Northrop Grumman Systems

San Jose · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Nuvera Medical Inc

Los Gatos · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Oak Grove Sch District

San Jose · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Paratransit Maitenance

Brisbane · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Paratransit Operations

Brisbane · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

PEAK TECHNOLOGY ENTERPRISES INC

San Jose · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Pier 92 Amador Ready Mix

San Francisco · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Prime Now LLC USF1

Santa Clara · Notice of Intent · 0.88 km away

derived_receiving_water

Derived by California Stormwater Intelligence

PROCEPT BioRobotics

Redwood City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Quality Plating Co

San Jose · No Exposure Certification · 0.58 km away

derived_receiving_water

Derived by California Stormwater Intelligence

QuantumScape

San Jose · No Exposure Certification · 0.45 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Ranch Town Recycling

San Jose · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

RCRefinishing

San Jose · No Exposure Certification · 0.98 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Rebar Spacer Block Co Inc

Alviso · Notice of Intent · 0.84 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Recology San Bruno

Burlingame · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

ReCor Medical

Palo Alto · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Reed Graham Inc

San Jose · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Regale Winery and Vineyards

Los Gatos · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Roth Wood Products

San Jose · No Exposure Certification · 0.51 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Royal Coach Tours

San Jose · Notice of Intent · 0.87 km away

derived_receiving_water

Derived by California Stormwater Intelligence

San Jose City Martin Park Land

San Jose · No Exposure Certification · 0.55 km away

derived_receiving_water

Derived by California Stormwater Intelligence

San Jose Plant

San Jose · Notice of Intent · 0.96 km away

derived_receiving_water

Derived by California Stormwater Intelligence

San Jose Ready Mix

San Jose · Notice of Intent · 0.74 km away

derived_receiving_water

Derived by California Stormwater Intelligence

San Jose Unified School Dist

San Jose · Notice of Intent · 0.69 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Sanmina HQ

San Jose · No Exposure Certification · 0.67 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Santa Clara County Almaden Quicksil

San Jose · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Clara Powder Coating Inc

Santa Clara · Notice of Intent · 0.90 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Silicon Light Machines

San Jose · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

SJ Valley Plating

Santa Clara · Notice of Intent · 0.52 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Starlight Marine Services

Alameda · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

SunPower Corporation

San Jose · Notice of Intent · 0.36 km away

derived_receiving_water

Derived by California Stormwater Intelligence

SVXR Inc

San Jose · No Exposure Certification · 0.94 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Swissport Fueling Inc

San Jose · Notice of Intent · 0.11 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Testarossa Winery

Los Gatos · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

THAT Corporation

Milpitas · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Thin Film Electronics

San Jose · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Tournesol Siteworks LLC

Union City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

TTM Technologies North America LLC

San Jose · No Exposure Certification · 0.53 km away

derived_receiving_water

Derived by California Stormwater Intelligence

TTM Technologies North America LLC

San Jose · No Exposure Certification · 0.55 km away

derived_receiving_water

Derived by California Stormwater Intelligence

US Coast Guard Base Alameda

Alameda · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Vanderbend Manufacturing Inc

Santa Clara · No Exposure Certification · 0.18 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Vanderbend Manufacturing Inc

San Jose · Notice of Intent · 0.14 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Veeco Process Equipment Inc

San Jose · No Exposure Certification · 0.97 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Verb Surgical Incorporate

Santa Clara · No Exposure Certification · 0.98 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Western Digital Technologies Inc

San Jose · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Westfab Manufacturing Inc

Santa Clara · No Exposure Certification · 0.93 km away

derived_receiving_water

Derived by California Stormwater Intelligence

WL Gore and Associates Silicon Valley

Santa Clara · No Exposure Certification · 0.99 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Xilinx

San Jose · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Zanker Material Processing Facility

San Jose · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Zero Waste Energy Development Company

San Jose · 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.