Laguna Creek (Alameda County)

2026 303(d) list Waterbody ID CAR2052000020210704058633 River & Stream Region 2 · San Francisco Bay

At a glance

2026 listing Evidence: State-published: On the 2026 303(d) list · 1 Appendix A decision; Category 5: a TMDL is required; What a listing means
Pollutants and stressors: 1 pollutant in 1 Appendix A category; Nutrients (1); Listing decisions
TMDL information Evidence: State-published: 1 decision with a TMDL requirement status; Status codes as published: 5A; TMDL details
Regional Water Board: Region 2 · San Francisco Bay; River & Stream · Map
Industrial stormwater facilities: 0 report it as their receiving water Evidence: identification corroborated; 107 within 1 km Evidence: geographic proximity; Neither count establishes a discharge · Facilities

What a 303(d) listing means

The Clean Water Act section 303(d) list names waters that do not meet water quality standards for one or more pollutants or stressors. California publishes it in the Integrated Report; this page shows the 2026 decisions from Appendix A as published.

A listing describes the condition of the waterbody. It does not identify which sources cause the impairment, and it does not by itself place a requirement on any particular facility.
Listed waters do not all have the same status. The Integrated Report category says how an impairment is being addressed: 5, a TMDL is required; 4a, addressed by a USEPA-approved TMDL; 4b, addressed by other pollution control requirements; 4c, impairment not caused by a pollutant. This waterbody's decisions are in category 5.
TMDL requirement status values (such as 5A or 5B) are shown exactly as published in Appendix A.

2026 listing status Evidence: State-published

On the 2026 303(d) list: Yes
Appendix A decisions: 1
Integrated Report category: 5 (a TMDL is required)
Listing cycle: 2026
State Board adoption: 2026-02-03 (Resolution 2026-0005)
USEPA approval: not confirmed — submittal letter to USEPA published; no approval found on the report page (checked 2026-10-22)
Regional Water Board: 2 — San Francisco Bay

Published by the State Water Resources Control Board (2026 California Integrated Report, Appendix A). Listing status is taken from Appendix A only. A listing describes the condition of this waterbody, not of any facility.

Location

Loading the waterbody shape…

Open this area on the statewide map · Browse impaired waters

Listing decisions and pollutants Evidence: State-published

Grouped by the Pollutant Category published in Appendix A. Pollutant names, categories and decisions are exactly as published.

Nutrients (1 decision)

Nutrients: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Ammonia	Nutrients	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	150958

TMDL information Evidence: State-published

TMDL information published for this waterbody
Pollutant	TMDL requirement status	TMDL project	Priority	USEPA approval of TMDL	Expected attainment
Ammonia	5A	—	Low	—	—

This is TMDL information for the waterbody. It does not establish that a TMDL applies to any particular facility. Facility-specific TMDL requirements recorded in SMARTS appear on facility pages and are not linked to this waterbody until reviewed.

HUC12 watersheds

Published with the listing Evidence: publisher-reported

Agua Caliente Creek-Frontal San Francisco Bay Estuaries 180500040701
Plummer Creek-Frontal San Francisco Bay Estuaries 180500040702
San Francisco Bay Estuaries-Frontal San Francisco Bay 180500041001

Overlapping the waterbody's shape Evidence: spatial

Agua Caliente Creek-Frontal San Francisco Bay Estuaries 180500040701 also published
Plummer Creek-Frontal San Francisco Bay Estuaries 180500040702 also published
San Francisco Bay Estuaries-Frontal San Francisco Bay 180500041001 also published

Industrial stormwater facilities

Evidence: identification corroborated

Shows: the facility named this waterbody as its receiving water in SMARTS, and the name and the facility's location are consistent with it. Does not establish: a discharge pathway, a discharge of any pollutant, or a cause of the listing.

Evidence: geographic proximity

Shows: the facility's reported location is within 1 km of the waterbody's mapped shape. Does not establish: that the facility discharges to this waterbody, or any other relationship.

Report this waterbody as their receiving water Evidence: identification corroborated

No facility's reported receiving water is identified as this waterbody.

Within 1 km of a facility's reported location Evidence: geographic proximity

Spatial proximity only; discharge pathway not established. Being near this waterbody does not mean a facility discharges to it.

Facilities whose reported location is within 1 km of this waterbody
Facility	WDID	Status	Distance	Map
TR Manufacturing LLC	2 01NEC000857	Terminated	288 m	map
Bandwidth 9	2 01I015548	Terminated	288 m	map
Intematix Inc	2 01NEC002415	Active	291 m	map
Lam Research	2 01I022235	Active	303 m	map
Measurement Specialties Inc	2 01NEC001827	Terminated	305 m	map
Compactor Management Coompany	2 01I028426	Terminated	331 m	map
Viant Medical	2 01NEC015668	Active	331 m	map
BEMA Electronic Manufacturing Incorporated	2 01NEC000690	Active	336 m	map
Irvington Pump Station	2 01I006203	Terminated	337 m	map
West Coast Quartz	2 01NEC010435	Active	341 m	map
B and G Precision Inc	2 01IN605457	NOI Required	348 m	map
MedPlast Fremont	2 01I025870	Terminated	351 m	map
Penguin Computing	2 01NEC008267	Active	363 m	map
Jabil	2 01I029292	Terminated	363 m	map
Viant Fremont	2 01I029090	Active	374 m	map
Magnum Microwave Corp	2 01I010034	Terminated	396 m	map
All West Fabricators Inc	2 01I023957	Active	396 m	map
Bodycote Thermal Processing	2 01I019367	Active	399 m	map
Eic Corp	2 01I013301	Terminated	425 m	map
Quicksil Inc	2 01I020382	Terminated	425 m	map
Intevac	2 01I021430	Terminated	431 m	map
Public Storage	2 01NNA001183	No Action Required	464 m	map
PJs Lumber Inc	2 01I012905	Active	471 m	map
Thomas Printing Inks	2 01I011133	Terminated	488 m	map
New United Motors	2 01I010683	Terminated	491 m	map
Lam Research CA 5	2 01NEC010227	Active	507 m	map
Toyota Logistics Services Inc	2 01I016833	Terminated	518 m	map
TR Manufacturing LLC	2 01NEC000856	Terminated	522 m	map
Jabil	2 01NEC014191	Terminated	525 m	map
MASS Precision Incorporated	2 01I026967	Active	557 m	map
Materion Electrofusion and Ceramics	2 01NEC000086	Terminated	596 m	map
Lam Research	2 01I010912	Terminated	602 m	map
Lam Research	2 01I031289	Active	606 m	map
Knightsbridge Plastics Inc	2 01NEC005645	Active	612 m	map
Excelitas Technologies	2 01I016939	Terminated	621 m	map
Tesla Inc	2 01I023687	Active	631 m	map
Western States Glass	2 01I022384	Terminated	634 m	map
Next Generation Tile	2 01I027111	Active	635 m	map
Trulite Glass and Aluminum Solutions	2 01I026675	Terminated	641 m	map
Cyantek Corp	2 01I010903	Terminated	651 m	map
Air Liquide Advanced Materials	2 01I026024	Active	655 m	map
Amazon com Services LLC DXC5 PKG SANTACLARA2	2 01I031382	Active	664 m	map
Chart Inc.	2 01NEC003532	Terminated	692 m	map
Chrisp Co	2 01I015866	Terminated	697 m	map
CubeSmart 699	2 01NNA002485	No Action Required	711 m	map
Dh Title & Fabrication Inc	2 01I014204	Terminated	719 m	map
Tri City Rock Inc	2 01I013675	Active	720 m	map
Thermo Fisher Scientific	2 01NEC004749	Active	766 m	map
Christy Concrete	2 01I007249	Terminated	789 m	map
Christy Concrete Prod	2 01I017717	Terminated	789 m	map

107 facilities, nearest first. Page 2 of 3: previous next

Sources and provenance

Sources behind this page
Information	Source	Retrieved
Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12)	USGS	2026-10-22
2026 California Integrated Report, Appendix A: 2026 303(d) List (final)	SWRCB	2026-10-22
Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0)	SWRCB GIS	2026-10-22
SMARTS TMDL requirements	SMARTS	2026-10-21

Relationships computed 2026-10-22 (facility_huc12/1, proximity/1, receiving_water/2, tmdl_reference/1, waterbody_huc12_ovl/1, waterbody_huc12_pub/1).

Integrated Report categories: 5, a TMDL is required; 4a, addressed by a USEPA-approved TMDL; 4b, addressed by other pollution control requirements; 4c, impairment not caused by a pollutant.