← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Arroyo De La Laguna

Waterbody ID (WBID)
CAR2043008419990218135005
County / counties
Alameda
Regional Water Board
Regional Board 2 - San Francisco Bay Region
Waterbody type
River & Stream
Condition category
Category 4a — TMDL completed
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 / stressorDecision IDFinal listing decisionDecision statusTMDL requirement statusTMDL projectTMDL priority
DiazinonPesticides69000List on 303(d) list (being addressed by USEPA approved TMDL)Original5B — Addressed by USEPA-approved TMDLSan Francisco Bay Urban Creeks Diazinon—

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, 10:56 PM UTC
Waterbody ID
CAR2043008419990218135005
CALWNUM
2204.300801, 2204.300802, 2204.300803, 2204.300804, 2204.300900
WBD code
180500040502, 180500040503, 180500040602, 180500040603
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
10.53 Miles

Derived facility associations

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

Derived
Bio Rad Laboratories

Pleasanton · No Exposure Certification · 0.64 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Blommer Chocolate

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

CGI Hartung Glass Industries

Union City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Conklin Conklin Inc

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Delta Pacific Products

Union City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Electrochem Solutions Inc

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Emerald Packaging Inc

Union City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

FedEx Express Corp LVKA

Pleasanton · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

GCM Medical and OEM Inc

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

GCM Medical and OEM Inc

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

HECO Pacific Manufacturing

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

IDI Distributors

Union City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

IRCA Union City Facility

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

La Terra Fina USA Inc

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

MPP Union City

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

MV Transportation Div 22

Union City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Niles Canyon Railway

Sunol · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Niles Canyon Railway

Sunol · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Oldcastle Infrastructure

Pleasanton · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

OMRON Robotics and Safety Technologies

Pleasanton · No Exposure Certification · 0.92 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Penske Logistics Union City

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pleasanton Garbage Service Inc

Pleasanton · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pleasanton Warehouse

Pleasanton · Notice of Non-Applicability · 0.87 km away

derived_receiving_water

Derived by California Stormwater Intelligence

PTR Manufacturing Inc

Union City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

RXO Last Mile

Union City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

San Ramon Valley Unified

San Ramon · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Sterling Foods Caravan Foods II

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Sterling Foods Caravan Foods II

Union City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Sunol Plant

Sunol · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

TAEC Inc

Pleasanton · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Thermo Fisher Scientific

Pleasanton · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

TR Manufacturing LLC

Union City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

TRI CED COMMUNITY RECYCLING

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Union City Ready Mix

Union City · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

UPS San Ramon CASNR

San Ramon · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

USK Manufacturing

Union City · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Von Euw & Nunes truck yard

Fremont · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

XPO Last Mile 1620 Atlantic St

Union City · 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.