California Stormwater Intelligence

← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

San Luis Rey River, Lower (west of Interstate 15)

Waterbody ID (WBID): CAR9031100020011005104327
County / counties: San Diego
Regional Water Board: Regional Board 9 - San Diego Region
Waterbody type: River & Stream
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (9)

Each row is one official listing decision from Appendix A of the Final 2026 California Integrated Report. Source terminology is preserved as published.

Pollutant / stressor	Decision ID	Final listing decision	Decision status	TMDL requirement status	TMDL project	TMDL priority
Benthic Community EffectsOther Cause	126463	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
BifenthrinPesticides	111498	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ChlorideSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	148295	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
NitrogenNutrients	148398	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Oxygen, DissolvedNutrients	148304	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
PhosphorusNutrients	148307	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
PyrethroidsPesticides	111496	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Total Dissolved SolidsSALINITY/TOTAL DISSOLVED SOLIDS/CHLORIDES/SULFATES	148310	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ToxicityTotal Toxics	148311	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low

Source & provenance

Agency: California State Water Resources Control Board
Report: Final 2026 California Integrated Report
Dataset: Appendix A — 2026 303(d) List of Impaired Waters
Imported: Aug 21, 2026, 12:44 AM UTC
Waterbody ID: CAR9031100020011005104327
CALWNUM: 90311000
Geometry: Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)

View official Water Board fact sheet ↗Download Appendix A source file ↗

Location

Official 2026 Water Board geometry. Demonstration facility markers are shown for context only.

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Watershed: —
Assessed size: 18.81 Miles

Derived facility associations

Industrial stormwater facilities geographically associated with this waterbody. These are derived spatial associations, not Water Board findings.

Derived

ACE AVIATION SERVICE INC

Oceanside · No Exposure Certification · 0.55 km away

derived_receiving_water

Derived by California Stormwater Intelligence

ACME Sheetmetal Inc

Oceanside · No Exposure Certification · 0.87 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification · 0.56 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · Notice of Intent · 0.08 km away

derived_receiving_water

Derived by California Stormwater Intelligence

American Recycling International dba LKQ Pick Your Part Oceanside

Oceanside · Notice of Intent · 0.40 km away

derived_receiving_water

Derived by California Stormwater Intelligence

American Recycling International dba LKQ Pick Your Part Oceanside

Oceanside · Notice of Intent · 0.13 km away

derived_receiving_water

Derived by California Stormwater Intelligence

APMFG Fabricators Inc

Oceanside · No Exposure Certification · 0.40 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Balda Precision

Oceanside · No Exposure Certification · 0.55 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Birdom Surfboards

Oceanside · No Exposure Certification · 0.75 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Breeze Operations Oceanside

Oceanside · Notice of Intent · 0.90 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Carruth Cellars LLC

Oceanside · No Exposure Certification · 0.56 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Chemistry Surfboards

Oceanside · No Exposure Certification · 0.71 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Chics Custom Canvas

Oceanside · Notice of Non-Applicability · 0.65 km away

derived_receiving_water

Derived by California Stormwater Intelligence

COAST ENCLOSURES

Oceanside · No Exposure Certification · 0.74 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · Notice of Non-Applicability · 0.89 km away

derived_receiving_water

Derived by California Stormwater Intelligence

El Corazon Compost Facility

Oceanside · Notice of Intent · 0.47 km away

derived_receiving_water

Derived by California Stormwater Intelligence

FutureStitch Factory

Oceanside · No Exposure Certification · 0.36 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Harborside Surf Designs

Oceanside · No Exposure Certification · 0.77 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · Notice of Intent · 0.70 km away

derived_receiving_water

Derived by California Stormwater Intelligence

JBL Enterprises International

Oceanside · No Exposure Certification · 0.59 km away

derived_receiving_water

Derived by California Stormwater Intelligence

KDG Aviation LLC

Oceanside · Notice of Intent · 0.47 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Lamb Screen Printing Inc

Oceanside · No Exposure Certification · 0.52 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Lee Covill Design

Oceanside · No Exposure Certification · 0.75 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification · 0.98 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Michael Takayama Surfboards

Oceanside · No Exposure Certification · 0.78 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification · 0.48 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification · 0.64 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification · 0.48 km away

derived_receiving_water

Derived by California Stormwater Intelligence

North County Student Transportation

Oceanside · No Exposure Certification · 0.71 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Northern Pine Brewing

Oceanside · No Exposure Certification · 0.99 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside Ready Mix

Oceanside · Notice of Intent · 0.16 km away

derived_receiving_water

Derived by California Stormwater Intelligence

One Stop Aviation Inc

Oceanside · No Exposure Certification · 0.66 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification · 0.71 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification · 0.61 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification · 0.58 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Performance CNC INC

Oceanside · No Exposure Certification · 0.98 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Precision Label Inc

Oceanside · No Exposure Certification · 0.34 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification · 0.45 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Quality Express TShirts

San Diego · No Exposure Certification · 0.90 km away

derived_receiving_water

Derived by California Stormwater Intelligence

REACH 016 Oceanside CA

Oceanside · No Exposure Certification · 0.78 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Recombigene LLC

Oceanside · No Exposure Certification · 0.96 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification · 0.61 km away

derived_receiving_water

Derived by California Stormwater Intelligence

ryan burch surfboards inc

Oceanside · No Exposure Certification · 0.74 km away

derived_receiving_water

Derived by California Stormwater Intelligence

San Luis Rey WWTP

Oceanside · Notice of Intent · 0.05 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Scimedx Corporation

Oceanside · No Exposure Certification · 0.90 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Spring Water of San Diego, LLC, dba Blu Bulk Delivery

Oceanside · Notice of Non-Applicability · 0.57 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Stamped Concrete

Oceanside · No Exposure Certification · 0.79 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Stamped Concrete

Oceanside · No Exposure Certification · 0.85 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification · 0.58 km away

derived_receiving_water

Derived by California Stormwater Intelligence

StorAmerica Oceanside

Oceanside · Notice of Non-Applicability · 0.95 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Superior Foam Products Incorporated

Oceanside · No Exposure Certification · 0.72 km away

derived_receiving_water

Derived by California Stormwater Intelligence

TE Connectivity

Oceanside · Notice of Intent · 0.34 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Tek Steel Welding and Fabrication Inc

Oceanside · Notice of Intent · 0.94 km away

derived_receiving_water

Derived by California Stormwater Intelligence

The Lab Surf Company

Oceanside · No Exposure Certification · 0.77 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Oceanside · No Exposure Certification · 0.81 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Timber Love and Clay Inc

Oceanside · No Exposure Certification · 0.81 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Tube Line Technologies & Oceanside Marine and Tool

Oceanside · No Exposure Certification · 0.75 km away

derived_receiving_water

Derived by California Stormwater Intelligence

TURBINE AVIATION

Oceanside · No Exposure Certification · 0.93 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Unique Metal Products Incorporated

Oceanside · No Exposure Certification · 0.48 km away

derived_receiving_water

Derived by California Stormwater Intelligence

USI Supplements Inc

Oceanside · No Exposure Certification · 0.85 km away

derived_receiving_water

Derived by California Stormwater Intelligence

USI Supplements Inc

Oceanside · No Exposure Certification · 0.85 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Zuckers Custom Lures

Oceanside · No Exposure Certification · 0.80 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Facility records are official Industrial General Permit registrations, but the association between a facility and this waterbody is derived geographically (proximity or shared HUC12 subwatershed) and is not a Water Board receiving-water determination. Where a permit carries a Water Board-stated TMDL requirement naming this water, it is listed separately above.