Alvarado Creek

2026 303(d) list Waterbody ID CAR9071100020011025125514 River & Stream Region 9 · San Diego

At a glance

2026 listing Evidence: State-published: On the 2026 303(d) list · 2 Appendix A decisions; Category 5: a TMDL is required; What a listing means
Pollutants and stressors: 2 pollutants in 2 Appendix A categories; Metals (1) · Nutrients (1); Listing decisions
TMDL information Evidence: State-published: 2 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: 2 report it as their receiving water Evidence: identification corroborated; 45 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: 2
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 (1 decision)

Metals: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Selenium	Metals	5	List on 303(d) list (TMDL required list)	Original	A Source Unknown	77197

Nutrients (1 decision)

Nutrients: Appendix A decisions
Pollutant	Pollutant category	Category	Final listing decision	Decision status	Sources	Decision ID
Nitrogen	Nutrients	5	List on 303(d) list (TMDL required list)	Original	A Source Unknown	76050

TMDL information Evidence: State-published

TMDL information published for this waterbody
Pollutant	TMDL requirement status	TMDL project	Priority	USEPA approval of TMDL	Expected attainment
Nitrogen	5A	—	Low	—	—
Selenium	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

None published.

Overlapping the waterbody's shape Evidence: spatial

Murray Reservoir 180703040704

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
California Countertop Inc	9 37I019697	Terminated	26 m	map
La Mesa Maintenance Facility	9 37I028707	Active	298 m	map

Receiving water reported by facility — waterbody identification corroborated by geographic evidence. 2 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
J and M Products	9 37IN601680	Undetermined	25 m	map
California Countertop Inc	9 37I019697	Terminated	26 m	map
Damar Plastics	9 37IN601083	No Action Required	80 m	map
Sweet Cheeks Baking Co	9 37IN601815	Undetermined	84 m	map
Fuji Trucolor Photo Inc	9 37I009180	Terminated	109 m	map
CNP Signs Graphics	9 37I023383	Terminated	120 m	map
Diamond Concrete Supply Inc	9 37IN601612	No Action Required	139 m	map
Gannett Outdoor	9 37I010971	Terminated	148 m	map
Outdoor Systems Advertising	9 37I013343	Terminated	148 m	map
Infinity Outdoor	9 37I016129	Terminated	148 m	map
J&T Manufacturing & Engineering	9 37IN600367	Undetermined	157 m	map
Sullivan Moving	9 37I003806	Terminated	178 m	map
United Design Group Inc	9 37NEC010911	Terminated	189 m	map
Rainbow Steel	9 37I018321	Terminated	243 m	map
Helix Brewing Co Inc	9 37NEC007568	Active	254 m	map
Precision Optical Products	9 37IN601951	Undetermined	277 m	map
Mission Valley Self Storage	9 37NEC001229	Active	284 m	map
EDCO Station	9 37I012705	Active	298 m	map
La Mesa Maintenance Facility	9 37I028707	Active	298 m	map
Certified Metal Craft	9 37I001296	Terminated	316 m	map
San Pasqual Winery	9 37NEC001347	Terminated	333 m	map
Mission Valley Self Storage	9 37IN600354	Undetermined	354 m	map
Moran Canvas Products Incorporated	9 37NEC006015	Active	371 m	map
Classic Screen Print	9 37IN600795	NEC Required	373 m	map
Adams Neon Signs	9 37IN601077	No Action Required	385 m	map
Equality Plating	9 37I003987	Terminated	386 m	map
Terry Carlsness	9 37I015582	Terminated	386 m	map
5980 Warehousing	9 37NNA003246	NONA Submitted	391 m	map
Wyatt Oaks Winery	9 37NEC007605	Terminated	409 m	map
Wyatt Oaks Winery LLC	9 37NEC003893	Terminated	415 m	map
La Mesa WineWorks	9 37NEC004625	Active	415 m	map
Mary M Clark	9 37IN600679	Undetermined	447 m	map
Advantage Limousine Ser	9 37I012776	Terminated	451 m	map
DIXIELINE LUMBER CO	9 37I015243	Terminated	462 m	map
Tech 4 Learning Inc	9 37IN600659	Undetermined	468 m	map
MHS Employment Services	9 37IN600685	No Action Required	468 m	map
US3	9 37IN600829	Undetermined	471 m	map
Kaiser Riverdale	9 37IN600758	Undetermined	661 m	map
LOGISTERRA, INC	9 37IN600353	Undetermined	694 m	map
Allied Gardens Towing	9 37I004002	Terminated	747 m	map
Maxim Crane Works	9 37I024402	Terminated	842 m	map
Wholesale Automotive Machine	9 37IN601818	Undetermined	847 m	map
Alvarado Water Treatment Plant	9 37I021619	Terminated	850 m	map
Groceryworks #2093	9 37NNA000868	No Action Required	908 m	map
Biotone	9 37IN602432	No Action Required	951 m	map

45 facilities, nearest first.

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.