Sawpit Creek

2026 303(d) list Waterbody ID CAR4053100020050119104537 River & Stream Region 4 · Los Angeles

At a glance

2026 listing Evidence: State-published: On the 2026 303(d) list · 4 Appendix A decisions; Category 5: a TMDL is required; What a listing means
Pollutants and stressors: 4 pollutants in 4 Appendix A categories; Metals (1) · Pathogens (1) · Pesticides (1) · Toxic Organics (1); Listing decisions
TMDL information Evidence: State-published: 4 decisions with a TMDL requirement status; 1 name a TMDL project; Status codes as published: 5A, 5B; TMDL details
Regional Water Board: Region 4 · Los Angeles; River & Stream · Map
Industrial stormwater facilities: 7 report it as their receiving water Evidence: identification corroborated; 177 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: 4
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: 4 — Los Angeles

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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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.

Metals (1 decision)

Metals: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Lead	Metals	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	138802

Pathogens (1 decision)

Pathogens: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Indicator Bacteria	Pathogens	5	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	A Source Unknown	150333

Pesticides (1 decision)

Pesticides: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Chlordane	Pesticides	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	138798

Toxic Organics (1 decision)

Toxic Organics: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Bis(2ethylhexyl)phthalate (DEHP)	Toxic Organics	5	List on 303(d) list (TMDL required list)	Original	A Source Unknown	68164

TMDL information Evidence: State-published

TMDL information published for this waterbody
Pollutant	TMDL requirement status	TMDL project	Priority	USEPA approval of TMDL	Expected attainment
Bis(2ethylhexyl)phthalate (DEHP)	5A	—	Low	—	—
Chlordane	5A	—	Low	—	—
Indicator Bacteria	5B	Los Angeles River Pathogens (15)	—	2012-10-23	—
Lead	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

Santa Anita Wash-Rio Hondo 180701050302

Overlapping the waterbody's shape Evidence: spatial

Santa Anita Wash-Rio Hondo 180701050302 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

Facilities whose reported receiving water is identified as this waterbody
Facility	WDID	Status	Distance from reported location	Map
LA County Auto Parts & Salvage	4 19I028136	Terminated	389 m	map
JY AUTO PARTS INC	4 19I030968	Active	433 m	map
Alpha Auto Wrecking	4 19I012811	Terminated	572 m	map
Kin Ming Co USA	4 19I029458	Terminated	643 m	map
S & V Auto Dismantling	4 19I021942	Terminated	808 m	map
Burnett and Son Meat Company Incorporated	4 19I027661	Active	1.1 km	map
United Rock Products	4 19I000779	Active	1.5 km	map

Receiving water reported by facility — waterbody identification corroborated by geographic evidence. 7 facilities.

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
Nemos Auto Dismantling Inc	4 19I030591	Active	364 m	map
Staging & Engineering Ctr	4 19I009548	Terminated	367 m	map
Millennium Auto Wrecking	4 19IN601150	NOI Filed	368 m	map
Speedy Auto Dismantling Sale	4 19I016444	Terminated	376 m	map
Nemos Auto Dismantling	4 19I021490	Terminated	376 m	map
Caliz Auto Dismantling	4 19I022569	Terminated	376 m	map
Millennium Auto Wrecking	4 19I015618	Terminated	381 m	map
Avos Auto Wrecking	4 19I012804	Terminated	387 m	map
LA County Auto Parts & Salvage	4 19I028136	Terminated	389 m	map
LA County Auto Dismantling	4 19I029146	Active	391 m	map
Tat Auto Dismantler	4 19I013800	Terminated	393 m	map
Thomas Auto Wreckers	4 19I015043	Terminated	393 m	map
Nemos Auto Dismantling	4 19I022666	Terminated	393 m	map
Beyond Auto Recycler Inc	4 19I023532	Active	404 m	map
YLM Auto Wrecking	4 19I014889	Terminated	423 m	map
Los 3 Gallos	4 19I024442	Terminated	428 m	map
JY AUTO PARTS INC	4 19I030968	Active	433 m	map
S J Auto	4 19I024928	Terminated	436 m	map
Metro Division 24	4 19I026721	Active	444 m	map
Dave S Auto Truck Dismantlin	4 19I001717	Active	458 m	map
750 Recyclers	4 19I028928	Terminated	467 m	map
Big J Auto Wrecking	4 19I012542	Terminated	469 m	map
Beyond Auto Recycler Inc	4 19I021266	Terminated	469 m	map
CalPortland Company Live Oak Plant	4 19I020718	Terminated	471 m	map
LA Sound Panels	4 19NNA001151	NEC Required	471 m	map
Roncelli Plastics Inc	4 19NEC008619	Active	476 m	map
Savon Auto Wrecking	4 19I018707	Terminated	477 m	map
Alpha Auto Dismantling LLC	4 19I022128	Terminated	477 m	map
Circuit Tree	4 19I012232	Terminated	477 m	map
Raycen Technologies	4 19I018098	Terminated	477 m	map
Lakeside Auto Salvage	4 19I015172	Terminated	489 m	map
Duarte Auto Wrecking	4 19I020452	Terminated	489 m	map
Catrachos Auto Dismantling	4 19I030643	Terminated	497 m	map
Best Choice Auto Dismantling	4 19I019081	Terminated	506 m	map
Best Choice Auto Dismantling	4 19I022938	Terminated	506 m	map
Access Auto Dismantling	4 19I017453	Terminated	516 m	map
Kin Ming Co USA	4 19I030529	Active	525 m	map
Russ Recycling	4 19I018559	Terminated	525 m	map
John Payne	4 19I003483	Active	527 m	map
Alpha Auto Dismantling	4 19I029062	Terminated	531 m	map
Decco US Post Harvest Inc	4 19I009484	Active	537 m	map
Decco US Post Harvest Inc	4 19I016079	Terminated	537 m	map
CytoImmune Therapeutics Inc	4 19NEC012019	Terminated	540 m	map
Avery Dennison Co	4 19I005231	Terminated	549 m	map
F A S T Inc	4 19I009284	Active	552 m	map
Platinum Auto Dismantling	4 19I030725	Active	558 m	map
Western Emulsions Inc	4 19I006935	Active	561 m	map
US Auto Wrecking	4 19I029683	Terminated	568 m	map
Con Way Western Express	4 19I006451	Terminated	569 m	map
Alpha Auto Wrecking	4 19I012811	Terminated	572 m	map

177 facilities, nearest first. Page 2 of 4: 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.