← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

San Luis Canal (Merced County)

Waterbody ID (WBID)
CAR5412000020190906033387
County / counties
Merced
Regional Water Board
Regional Board 5 - Central Valley Region
Waterbody type
River & Stream
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (3)

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

Pollutant / stressorDecision IDFinal listing decisionDecision statusTMDL requirement statusTMDL projectTMDL priority
BoronMetals160241Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
pHOther Cause160243List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
SeleniumMetals164118List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow

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
CAR5412000020190906033387
CALWNUM
6541.2
WBD code
180400012102
Geometry
Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)

Location

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

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Watershed
Assessed size
5.66 Miles

Facilities with an NAL exceedance for a listed pollutant (1)

Geographically associated industrial stormwater facilities whose reported results exceeded an Industrial General Permit Numeric Action Level for a pollutant this waterbody is listed for.

Derived

California Dairies Inc5F24I019951

pH · most recent exceedance RY 2019 · association: derived watershed association

This is derived co-occurrence between a calculated NAL comparison and the official 303(d) listing for this waterbody. An NAL exceedance triggers Exceedance Response Actions under the permit; it is not a violation and does not establish that any facility caused or contributed to this impairment.

Derived facility associations

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

Derived
420 Mercey Springs SP LLC

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

A and S Metals

Los Banos · Notice of Intent · 0.92 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

A&S TRANSPORT EXPRESS INC

Los Banos · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

American Self Storage

Los Banos · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

BRAVO FOODS ENTERPRISESINC DBA PRODUCTOS D TRADICION

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

California Dairies Inc

Los Banos · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

derived_watershed_association

Derived by California Stormwater Intelligence

City Taxi

Los Banos · Notice of Non-Applicability · 0.10 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Corona Express Taxi

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

El grano de oro

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Former Los Banos Landfill

Los Banos · Notice of Intent · 0.46 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

G St Storage

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

GH Trucking

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

H & S Trucking

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Home based Business

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Ideal Environmental

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

IEM INNOVATION ENGINEERING MODULAR

Los Banos · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Juarez hauling

Los Banos · Notice of Non-Applicability · 0.71 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Jugos Acapulco

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Julian Bonilla Trucking LLC

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Kagome Inc

Los Banos · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Licos Hauling

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Los Banos Cab Taxi Service

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Los Banos City Airport

Los Banos · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Los Banos Mini Storage

Los Banos · Notice of Non-Applicability · 0.34 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

MADERAS WELDING

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Maggies Macs & More Sweetshop

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Matias Santiago Hauling

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Mid Valley Disposal

Los Banos · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

molina recycling

Los Banos · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

na

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Olive Tree Parking

Los Banos · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Pacheco Mini Storage

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Quezada Recycling Center

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Ray Rays Natural Soap

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Ruiz neighborhood storage

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Sabonete Handmade

Los Banos · Notice of Non-Applicability · 0.45 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Sandoval Wood Creations

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

StorQuest Los Banos

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

T J Signs

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

T M Cabinets

Los Banos · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

USA Produce

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

USA PRODUCE

Los Banos · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Willmott Self Storage

Los Banos · Notice of Non-Applicability

derived_watershed_association

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.