← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Tequisquita Slough

Waterbody ID (WBID)
CAR3053002020011121091332
County / counties
San Benito
Regional Water Board
Regional Board 3 - Central Coast Region
Waterbody type
River & Stream
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (8)

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
Chlorophyll-aNutrients107430List on 303(d) list (TMDL required list)Original5A TMDL still requiredHigh
Fecal ColiformPathogens131025Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLPajaro River Fecal Coliform (including San Benito R., Llagas Cr., and Tequesquita Slough)
NitrateNutrients128218List on 303(d) list (being addressed by USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLPajaro River Watershed Nutrients
Oxygen, DissolvedNutrients107454Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Revised5B Addressed by USEPA-approved TMDLPajaro River Watershed Nutrients
pHOther Cause107456Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
SeleniumMetals107459List on 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
ToxicityTotal Toxics107461Do Not Delist from 303(d) list (TMDL required list)Revised5A TMDL still requiredLow
TurbiditySediment107463Do Not Delist from 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
Sep 16, 2026, 10:56 PM UTC
Waterbody ID
CAR3053002020011121091332
CALWNUM
3305.3002
WBD code
180600020103, 180600020206
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
7.32 Miles

Derived facility associations

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

Derived
Alpha Teknova Inc

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Alpha Teknova Inc

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Alpha Teknova Inc

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Alpha Teknova Inc

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Alpha Teknova Inc

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Amazon com Services LLC DJC5

Hollister · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

American Casting Company

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Anita La Michoacana Paleteria y Neveria

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ashley Precision Inc

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Brent Redmond Transportation

Hollister · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

California Forest Products Incorporated

Hollister · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Cedar Valley Manufacturing Inc

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ciminos Cabinet Doors Inc

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

CMC Materials

Hollister · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

CUSTOM AG PAK LLC

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Greenwood Cleaning Products Shop

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Guerra Nut Shelling Company

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Hollister Municipal Airport

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Iamori

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

JP Auto Recycling

Hollister · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

la piedad tortilla factory

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Leisinger Cattle Company

Hollister · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

mann precision inc

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Nordstrom Dentistry

Hollister · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Ozeki Sake USA Inc

Hollister · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pacific Glazing Contractors

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Pride Conveyance Systems

Hollister · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

R & R Perry Farms

Hollister · Notice of Non-Applicability · 0.68 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

derived_watershed_association

Derived by California Stormwater Intelligence

Sage Blanc Incorporated

Hollister · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

San Benito Recycling

Hollister · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

STERICYCLE INC

Hollister · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

West Coast Rubber Recycling Inc

Hollister · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Williams Cabinets

Hollister · No Exposure Certification

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.