San Diego River (Lower)

2026 303(d) list Waterbody ID CAR9071100020011025101606 River & Stream Region 9 · San Diego

At a glance

2026 listing Evidence: State-published: On the 2026 303(d) list · 16 Appendix A decisions; Category 5: a TMDL is required; What a listing means
Pollutants and stressors: 16 pollutants in 8 Appendix A categories; Nuisance (1) · Nutrients (3) · Other Cause (1) · Pathogens (1) · Pesticides (6) · SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES (2) · Sediment (1) · Total Toxics (1); Listing decisions
TMDL information Evidence: State-published: 16 decisions with a TMDL requirement status; 1 name a TMDL project; Status codes as published: 5A, 5B; TMDL details
Regional Water Board: Region 9 · San Diego; River & Stream · Map
Industrial stormwater facilities: 0 report it as their receiving water Evidence: identification corroborated; 224 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: 16
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: 9 — San Diego

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.

Nuisance (1 decision)

Nuisance: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Color	Nuisance	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	125492

Nutrients (3 decisions)

Nutrients: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Nitrogen	Nutrients	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	132043
Oxygen, Dissolved	Nutrients	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	111896
Phosphorus	Nutrients	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	111900

Other Cause (1 decision)

Other Cause: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Benthic Community Effects	Other Cause	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown Hydromodification Illicit Connections/Illegal Hook-ups/Dry Weather Flows Unknown Nonpoint Source Unknown Point Source Urban Runoff/Storm Sewers	145056

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	127657

Pesticides (6 decisions)

Pesticides: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Bifenthrin	Pesticides	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	111918
Chlordane	Pesticides	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	111870
Cyfluthrin	Pesticides	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	111928
Cypermethrin	Pesticides	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	144954
Permethrin	Pesticides	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	130294
Pyrethroids	Pesticides	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	144953

SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES (2 decisions)

SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Chloride	SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	125491
Total Dissolved Solids	SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	125496

Sediment (1 decision)

Sediment: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Turbidity	Sediment	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	111908

Total Toxics (1 decision)

Total Toxics: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Toxicity	Total Toxics	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	111907

TMDL information Evidence: State-published

TMDL information published for this waterbody
Pollutant	TMDL requirement status	TMDL project	Priority	USEPA approval of TMDL	Expected attainment
Benthic Community Effects	5A	—	Low	—	—
Bifenthrin	5A	—	Low	—	—
Chlordane	5A	—	Low	—	—
Chloride	5A	—	Low	—	—
Color	5A	—	Low	—	—
Cyfluthrin	5A	—	Low	—	—
Cypermethrin	5A	—	Low	—	—
Indicator Bacteria	5B	Bacteria Impaired Waters I (creeks and beach shorelines)	—	2011-06-22	—
Nitrogen	5A	—	Low	—	—
Oxygen, Dissolved	5A	—	Low	—	—
Permethrin	5A	—	Low	—	—
Phosphorus	5A	—	Low	—	—
Pyrethroids	5A	—	Low	—	—
Total Dissolved Solids	5A	—	Low	—	—
Toxicity	5A	—	Low	—	—
Turbidity	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

El Capitan Lake-San Diego River 180703040505
Los Coches Creek-San Diego River 180703040703
Mission Valley-San Diego River 180703040705

Overlapping the waterbody's shape Evidence: spatial

El Capitan Lake-San Diego River 180703040505 also published
Lower San Vicente Creek 180703040603
Los Coches Creek-San Diego River 180703040703 also published
Mission Valley-San Diego River 180703040705 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
Storage Oasis	9 37NEC015810	Active	250 m	map
Ricks Machine Shop	9 37I027859	Active	250 m	map
Allied Gardens Towing	9 37I004002	Terminated	252 m	map
San Diego County Truss	9 37IN600527	No Action Required	254 m	map
Ruuhwa Dann & Associates Inc	9 37NEC001625	Terminated	254 m	map
Superior Ready Mix	9 37I005157	Active	255 m	map
Ruuhwa Dann and Associates Inc	9 37IN602694	No Action Required	255 m	map
Ameron Conc & Steel Pipe Grp	9 37I004358	Terminated	262 m	map
J L Davidson Co Inc	9 37I018244	Terminated	263 m	map
San Diego Precast Conc	9 37I019402	Terminated	263 m	map
Bill McKenzie	9 37IN600722	Undetermined	264 m	map
PODS Enterprises, LLC	9 37NNA002174	NONA Submitted	264 m	map
DHL Express San	9 37I021887	Terminated	265 m	map
Airborne Express	9 37I005541	Terminated	271 m	map
1800PACKRAT Lakeside	9 37NEC013204	Active	276 m	map
C&M Transfer of San Diego Inc	9 37I023135	Terminated	276 m	map
Vision Systems	9 37NEC003397	Active	280 m	map
Altech Machining Inc	9 37I027865	Terminated	281 m	map
Hawthorne Rent It Service	9 37I018001	Terminated	288 m	map
Cal Custom Manufacturing	9 37I012583	Terminated	288 m	map
CALIFORNIA CRAFTED MARBLE	9 37I018540	Active	288 m	map
GM Materials Ready Mix	9 37I024895	Terminated	291 m	map
Martin Marietta Channel Road	9 37I030464	Active	291 m	map
Lakeside Business Park Inc	9 37I009788	Terminated	293 m	map
Menlo Worldwide Forwarding 125	9 37I011148	Terminated	294 m	map
UPS Cartage Services Inc CALOV	9 37I019608	Active	294 m	map
Smith Brothers Inc	9 37IN600385	Undetermined	294 m	map
Computer Integrated Machining Inc	9 37NEC008979	Active	303 m	map
Blue Star Steel	9 37I028956	Active	303 m	map
AIM Marine	9 37I019568	Terminated	314 m	map
Louis Schlote	9 37IN600720	Undetermined	314 m	map
Cal Custom Manufacturing	9 37I012582	Terminated	319 m	map
Ccm Ent	9 37I018523	Terminated	319 m	map
Hanson Aggregates El Monte San	9 37I015526	Terminated	320 m	map
Sloan, Nelson	9 37I011839	Terminated	323 m	map
Adams Neon Signs	9 37IN601077	No Action Required	324 m	map
Diamond Concrete Supply	9 37I023388	Active	324 m	map
Penske Logistics	9 37I012959	Terminated	326 m	map
Found Image Press LLC	9 37IN601024	Undetermined	332 m	map
Oldcastle Infrastructure Inc	9 37I024467	Active	332 m	map
Craig Ghio	9 37IN600784	Undetermined	333 m	map
ChronTrol Corp	9 37IN601070	Undetermined	335 m	map
CubeSmart 152	9 37NNA002069	NONA Submitted	337 m	map
AIM Plastics Inc	9 37I026168	Terminated	338 m	map
Kaiser Riverdale	9 37IN600758	Undetermined	342 m	map
Pm Chemical Co Inc	9 37I012674	Terminated	342 m	map
West Coast Air Conditioning Co Inc	9 37I018199	Terminated	345 m	map
Carrillo & Sons Collision Ctr	9 37I022947	Terminated	348 m	map
Paper Recovery San Diego	9 37I014911	Terminated	350 m	map
SeaWorld Creative Services	9 37NEC001114	Active	352 m	map

224 facilities, nearest first. Page 2 of 5: 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.