Agua Hedionda Creek

2026 303(d) list Waterbody ID CAR9043100020010924145051 River & Stream Region 9 · San Diego

At a glance

2026 listing Evidence: State-published: On the 2026 303(d) list · 17 Appendix A decisions; Category 5: a TMDL is required; What a listing means
Pollutants and stressors: 17 pollutants in 8 Appendix A categories; Metals (2) · Nutrients (2) · Other Cause (1) · Pathogens (1) · Pesticides (8) · SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES (1) · Sediment (1) · Total Toxics (1); Listing decisions
TMDL information Evidence: State-published: 17 decisions with a TMDL requirement status; Status codes as published: 5A; TMDL details
Regional Water Board: Region 9 · San Diego; River & Stream · Map
Industrial stormwater facilities: 41 report it as their receiving water Evidence: identification corroborated; 207 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: 17
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

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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.

Metals (2 decisions)

Metals: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Manganese	Metals	5	List on 303(d) list (TMDL required list)	Original	A Source Unknown	68777
Selenium	Metals	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	111597

Nutrients (2 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	132037
Phosphorus	Nutrients	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	111596

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	125884

Pathogens (1 decision)

Pathogens: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Indicator Bacteria	Pathogens	5	List on 303(d) list (TMDL required list)	Original	A Source Unknown	75644

Pesticides (8 decisions)

Pesticides: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Bifenthrin	Pesticides	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	111604
Chlorpyrifos	Pesticides	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	111585
Cyfluthrin	Pesticides	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	111610
Cyhalothrin, Lambda	Pesticides	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	111612
Cypermethrin	Pesticides	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	144941
Deltamethrin	Pesticides	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	144942
Malathion	Pesticides	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	111591
Pyrethroids	Pesticides	5	List on 303(d) list (TMDL required list)	Revised	A Source Unknown	144940

SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES (1 decision)

SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Total Dissolved Solids	SALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	5	Do Not Delist from 303(d) list (TMDL required list)	Revised	A Source Unknown	111598

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	111600

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	111599

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	—	—
Chlorpyrifos	5A	—	Low	—	—
Cyfluthrin	5A	—	Low	—	—
Cyhalothrin, Lambda	5A	—	Low	—	—
Cypermethrin	5A	—	Low	—	—
Deltamethrin	5A	—	Low	—	—
Indicator Bacteria	5A	—	Low	—	—
Malathion	5A	—	Low	—	—
Manganese	5A	—	Low	—	—
Nitrogen	5A	—	Low	—	—
Phosphorus	5A	—	Low	—	—
Pyrethroids	5A	—	Low	—	—
Selenium	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

Agua Hedionda Creek 180703030502

Overlapping the waterbody's shape Evidence: spatial

Agua Hedionda Creek 180703030502 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
Aztec Containers	9 37I026237	Active	41 m	map
Camston Wrather LLC	9 37I029826	Active	452 m	map
Stines Machine Incorporated	9 37I025981	Terminated	507 m	map
Stines Machine Incorporated	9 37NEC015954	Active	507 m	map
Origin Golf	9 37NEC003714	Active	580 m	map
Top of the Bagel	9 37NEC002848	Active	627 m	map
Nordson Asymtek	9 37I026312	Terminated	634 m	map
FedEx Freight Inc NSD	9 37I025026	Active	669 m	map
Amazon com Services LLC DSD5 PKG CARLSBAD5	9 37I030353	Active	710 m	map
E World Recyclers LLC	9 37I024443	Terminated	747 m	map
Chaparros Mexican Food Inc	9 37I027559	Active	806 m	map
Wyroc Inc	9 37I007227	Terminated	842 m	map
Ionis Pharmaceuticals Inc	9 37I014738	Active	909 m	map
Architectural Millwork Solutions Inc	9 37NEC003693	Active	968 m	map
Rockwell Collins Optronics	9 37NEC001483	Active	1.1 km	map
Coast Waste Management Inc	9 37I014374	Terminated	1.1 km	map
Captek Softgel International	9 37I031707	Active	1.2 km	map
Captek Softgel International	9 37NEC010775	Terminated	1.2 km	map
Coorstek Vista Inc	9 37I023369	Terminated	1.2 km	map
Coorstek Vista Inc	9 37NEC000050	Terminated	1.2 km	map
Rayzist Photomask Inc	9 37I019312	Active	1.3 km	map
Watkins Manufacturing	9 37I005398	Active	1.3 km	map
FLUX POWER	9 37I030548	Active	1.3 km	map
FLUX POWER	9 37NEC011646	Terminated	1.3 km	map
US Foods Vista 4J	9 37NEC014406	Terminated	1.4 km	map
Dr Bronners	9 37I025623	Terminated	1.4 km	map
Dr Bronners	9 37NEC000728	Active	1.4 km	map
Ferro Electronic Materials	9 37I015837	Terminated	1.5 km	map
Ferro Electronic Materials	9 37NEC000465	Terminated	1.5 km	map
Pro Spot International Inc	9 37I031244	Active	1.5 km	map
Pro Spot International Inc	9 37NEC007393	Terminated	1.5 km	map
Drs Own	9 37NEC011615	Active	1.6 km	map
Javo Beverage Co	9 37I021167	Active	1.6 km	map
Versaform Corporation	9 37I018562	Active	1.7 km	map
Acushnet Co	9 37I015433	Terminated	1.7 km	map
Acushnet Co	9 37NEC001664	Active	1.7 km	map
RTX Corporation Pratt & Whitney Division	9 37I029933	Active	1.7 km	map
Breg Inc	9 37NEC004718	Active	1.9 km	map
UPS Carlsbad CALSB	9 37I030884	Active	1.9 km	map
Amazon com Services LLC CARLSBAD6	9 37I030435	Active	2.2 km	map
Amazon com Services LLC DGB6	9 37I030051	Active	2.3 km	map

Receiving water reported by facility — waterbody identification corroborated by geographic evidence. 41 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
Piercan USA Incorporated	9 37NEC007657	Active	20 m	map
Piercan USA Inc	9 37IN600486	NEC Required	30 m	map
Aztec Containers	9 37I026237	Active	41 m	map
Aztec Technology Corp	9 37IN601666	Undetermined	43 m	map
Roma Marble and Tile	9 37I026713	Terminated	58 m	map
Bernardo Moving	9 37NNA000929	NONA Submitted	61 m	map
Kurita America	9 37NEC014539	Active	63 m	map
Kurita America	9 37NEC011275	Terminated	64 m	map
Production 195 Bosstick Blvd	9 37NEC014291	Active	67 m	map
TC Surfboards	9 37NEC007904	Active	74 m	map
Shear Metal	9 37NEC001313	Active	91 m	map
Rama Marble and Tile	9 37IN601816	Undetermined	99 m	map
ASML Warehouse	9 37NEC013966	Active	107 m	map
Infrared Instruments Inc	9 37NEC007521	Active	109 m	map
No Vacancy Inc	9 37NEC007380	Terminated	110 m	map
Vista Pallets Inc	9 37NEC014733	Active	110 m	map
Au Naturel Functional Wellness	9 37NEC013952	Active	133 m	map
Innovative Sign Systems	9 37NEC009027	Active	137 m	map
BioSynergy International Incorporated	9 37NEC010064	Terminated	142 m	map
Lost and Found Distillery Inc	9 37NEC010999	Terminated	143 m	map
Tacupeto Chips & Salsa Inc	9 37NEC010297	Terminated	157 m	map
Anacapa Manufacturing Inc	9 37NEC014971	Active	160 m	map
Multipack	9 37NEC011911	Terminated	173 m	map
Americanning LLC	9 37NEC014525	Terminated	173 m	map
Universal Quartz	9 37IN600694	NEC Required	183 m	map
Riveras Iron Works	9 37I019911	Terminated	197 m	map
GUAVA TREE PRINTS INC	9 37NEC012666	Active	198 m	map
WEST COAST SELF-STORAGE CARSLBAD	9 37NNA001934	NONA Submitted	217 m	map
2Plank Vineyards	9 37NEC001528	Active	217 m	map
Myron L Company	9 37NEC001460	Active	224 m	map
CENZONE TECH INC	9 37NEC013034	Active	227 m	map
Distillery	9 37NEC007271	Terminated	233 m	map
Kinano Metal Finishing	9 37NEC011804	Active	242 m	map
Innovative Metal Products Inc	9 37NEC010087	Active	243 m	map
LASER FLOW PRODUCTS INC	9 37NEC003832	Terminated	244 m	map
Dansbiere LLC	9 37NEC000106	Active	254 m	map
Ocean Constructors Inc	9 37I022407	Terminated	256 m	map
Polymer Innovations Inc	9 37NEC009117	Active	265 m	map
C Enterprises	9 37NEC000650	Terminated	276 m	map
C Enterprises	9 37NEC007679	Terminated	276 m	map
pacific cabinetry inc	9 37NEC006744	Active	276 m	map
FIRSTEDGE INC	9 37NEC003263	Terminated	280 m	map
Ebullition Brew Works	9 37NEC004069	Terminated	283 m	map
cabinet shop	9 37NEC003767	Terminated	292 m	map
Mac Cabinetry	9 37I023090	Terminated	301 m	map
MAC Cabinetry and Remodel	9 37IN600653	No Action Required	301 m	map
Eliel	9 37NEC011816	Active	316 m	map
DBS Associates Inc	9 37IN600814	Undetermined	325 m	map
NORTH COUNTY POWDER COATING INC	9 37NEC010281	Active	325 m	map
Jif Pak Manufacturing Inc	9 37I026158	Terminated	328 m	map

207 facilities, nearest first. Page 1 of 5: 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.