Calabazas Creek (Santa Clara County)

2026 303(d) list Waterbody ID CAR2055004020120423095155 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 4a: addressed by a USEPA-approved TMDL; What a listing means
Pollutants and stressors: 1 pollutant in 1 Appendix A category; Pesticides (1); Listing decisions
TMDL information Evidence: State-published: 1 decision with a TMDL requirement status; 1 name a TMDL project; Status codes as published: 5B; 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; 124 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 4a.
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: 4a (addressed by a USEPA-approved TMDL)
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

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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.

Pesticides (1 decision)

Pesticides: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Diazinon	Pesticides	4a	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	A Source Unknown	97126

TMDL information Evidence: State-published

TMDL information published for this waterbody
Pollutant	TMDL requirement status	TMDL project	Priority	USEPA approval of TMDL	Expected attainment
Diazinon	5B	San Francisco Bay Urban Creeks Diazinon	—	2007-05-16	—

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

Calabazas Creek-Frontal San Francisco Bay Estuaries 180500030405
San Francisco Bay Estuaries-Frontal San Francisco Bay 180500041001

Overlapping the waterbody's shape Evidence: spatial

Calabazas Creek-Frontal San Francisco Bay Estuaries 180500030405 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
Garrod Trust	2 43I029294	Terminated	366 m	map
Garrod Trust	2 43NEC007018	Terminated	366 m	map
Garrod Trust	2 43NEC008077	Terminated	366 m	map
Garrod Trust	2 43NEC011051	Active	366 m	map
Cordis US Corp	2 43NEC009277	Terminated	368 m	map
Cordis US Corp	2 43NEC010317	Active	368 m	map
Applied Materials Inc	2 43I016458	Terminated	380 m	map
Dionex Corp Site 3	2 43I011746	Terminated	381 m	map
Intuitive Surgical	2 43NEC010071	Active	393 m	map
Intuitive Surgical	2 43NEC013073	Terminated	393 m	map
Intuitive Surgical	2 43NEC013699	Terminated	393 m	map
Westinghouse Security Elect	2 43I006644	Terminated	422 m	map
Compaq Comuter Corp	2 43I015606	Terminated	433 m	map
Peninsula Coating Services Inc	2 43I009482	Terminated	448 m	map
Westak	2 43I006896	Active	460 m	map
Hewlett Packard	2 43I011725	Terminated	468 m	map
Shockwave Medical	2 43NEC011632	Active	469 m	map
Celtrix Pharmaceuticals Inc	2 43I007016	Terminated	473 m	map
Qualitau Inc	2 43NEC006145	Terminated	475 m	map
Advanced Chemical Transport	2 43NEC013719	Active	481 m	map
Rabbits Foot Meadery	2 43NEC000543	Terminated	481 m	map
Shockwave Medical Inc	2 43NEC015162	Active	482 m	map
Shockwave Medical Inc	2 43NEC011631	Active	486 m	map
Coherent Inc	2 43I022197	Terminated	493 m	map
Coherent Inc	2 43NEC000260	Active	493 m	map
Shockwave Medical Inc	2 43NEC011819	Active	494 m	map
Pac Heat Treating Co	2 43I005638	Terminated	498 m	map
EPZ Inc	2 43I010379	Terminated	498 m	map
Micro Chem	2 43I006983	Terminated	499 m	map
Gc Intl	2 43I006911	Terminated	510 m	map
Enesco Inc	2 43I009541	Terminated	511 m	map
Atomic Machines	2 43NEC013131	Active	514 m	map
Toshiba America	2 43I006754	Terminated	528 m	map
Novalux Inc	2 43I018584	Terminated	528 m	map
MASS Precision Incorporated	2 43I026155	Terminated	534 m	map
Hyatt Die Cast & Engineering	2 43I011673	Terminated	541 m	map
Micro Chem Inc	2 43I011217	Terminated	546 m	map
Intutive Surgical S&V manufacturing	2 43NEC013697	Terminated	549 m	map
Intutive Surgical S&V manufacturing	2 43NEC012785	Terminated	554 m	map
WaveSplitter Technologies Inc	2 43I020410	Terminated	559 m	map
Dionex Corp Site 2	2 43I011745	Terminated	567 m	map
Toshiba Electronic Components	2 43I006755	Terminated	568 m	map
Dionex Corp Site 4	2 43I011747	Terminated	568 m	map
Skc America Inc Sunnyvale Div	2 43I006683	Terminated	570 m	map
Intelicoat Technologies LLC	2 43I017647	Terminated	570 m	map
Intuitive S&V	2 43NEC005566	Active	572 m	map
MOMENTUM METAL FINISHING INC	2 43I029269	Active	577 m	map
Elevated Materials US LLC	2 43NNA003342	No Action Required	603 m	map
Twinsloutions	2 43I016967	Terminated	606 m	map
Ara Automated Finishing	2 43I018691	Terminated	621 m	map

124 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.