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
Bay Polymer LLC	2 01I013586	Terminated	8 m	map
QuantumClean	2 01NEC004721	Terminated	24 m	map
Hallcon DBA Loop Transportation	2 01I029982	Active	27 m	map
1800PACKRAT Fremont	2 01NEC013202	Active	40 m	map
Western Precooling Systems Inc	2 01I012976	Terminated	47 m	map
Trend Circuits	2 01I000210	Terminated	52 m	map
Praegitzer Indust Inc	2 01I000259	Terminated	52 m	map
Tyco Printed Circuit Grp LP	2 01I015571	Terminated	52 m	map
Titan Ems Inc	2 01I017834	Terminated	52 m	map
WisLab EMS Corporation	2 01NNA003340	NOI Required	66 m	map
Asteelflash USA Corporation	2 01NEC005374	Terminated	66 m	map
Lam Research Corporation Building CA08	2 01NEC003707	Active	71 m	map
Arctic Glacier	2 01I029366	Terminated	74 m	map
Reddy Ice Fremont	2 01I031533	Active	74 m	map
Spectrum Lithograph	2 01I024159	Terminated	78 m	map
Spectrum Lithograph	2 01NEC004320	Active	78 m	map
Hayward Quartz Technology	2 01NEC002111	Active	82 m	map
Amazon com Services LLC HSF2	2 01I028952	Terminated	97 m	map
Amazon com Services LLC HSF2	2 01I029778	Active	97 m	map
Amazon com Services LLC HSF2	2 01NEC008202	Terminated	97 m	map
Snoboy Siding	2 01I005795	Active	98 m	map
Bay Area Circuits Inc	2 01NEC000518	Active	107 m	map
Sanmina Plant 5	2 01I010788	Terminated	107 m	map
Stericycle Inc Fremont	2 01NEC005284	Active	108 m	map
Global Plating Inc	2 01I029732	Active	118 m	map
Global Plating Inc	2 01NEC000038	Terminated	118 m	map
Lees Imperial Welding	2 01I016226	Active	125 m	map
Melrose Metal Product Inc	2 01I013003	Terminated	131 m	map
Y2K Electronics Recycling LLC	2 01I031249	Active	136 m	map
Applied Thin Film Products	2 01I025082	Active	140 m	map
Heraeus Quartztech Inc	2 01I016531	Terminated	145 m	map
Quantum Clean	2 01I023211	Terminated	154 m	map
QuantumClean	2 01NEC002192	Active	159 m	map
True Tech Corporation	2 01I026015	Terminated	180 m	map
Jabil	2 01I027470	Terminated	189 m	map
Global Plating	2 01I006142	Terminated	215 m	map
Microwave Technology Inc	2 01NEC001612	Terminated	222 m	map
7up Bottling Company of San francisco a divion of the American Bottling Company	2 01I026127	Terminated	235 m	map
7up Bottling Company of San francisco a divion of the American Bottling Company	2 01NEC002982	Terminated	235 m	map
Quality Trans	2 01I012218	Terminated	241 m	map
Greer Ent	2 01I010085	Terminated	245 m	map
Greer Ent	2 01I011343	Terminated	245 m	map
American Xtal Tech Inc	2 01I013356	Terminated	266 m	map
Athens Trans	2 01I005078	Terminated	267 m	map
Seven Up Bottling Co SF	2 01I016289	Terminated	267 m	map
Lam Research Corporation Building CA09	2 01NEC003708	Active	270 m	map
Read Rite Corp	2 01I010213	Terminated	281 m	map
Western Digital Technologies	2 01I018305	Active	281 m	map
Microwave Tech	2 01I009650	Terminated	281 m	map
Wavesplitter Technologies Inc	2 01I017174	Terminated	282 m	map

107 facilities, nearest first. Page 1 of 3: 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.