← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Suisun Bay

Waterbody ID (WBID)
CAB2071002020011017135055
County / counties
Contra Costa, Solano
Regional Water Board
Regional Board 2 - San Francisco Bay Region
Waterbody type
Bay & Harbor
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (10)

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
ChlordanePesticides141129Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
DDT (Dichlorodiphenyltrichloroethane)Pesticides151557Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
DieldrinPesticides141135Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
Dioxin compounds (including 2,3,7,8-TCDD)Toxic Organics151241Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
Furan CompoundsToxic Organics151243Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
Invasive SpeciesOther Cause170599Do Not Delist from 303(d) list (TMDL required list)Revised5A — TMDL still required—Low
MercuryMetals153023Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Revised5B — Addressed by USEPA-approved TMDLSan Francisco Bay Mercury—
PCBs (Polychlorinated biphenyls)Toxic Organics141146Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Revised5B — Addressed by USEPA-approved TMDLSan Francisco Bay PCBs—
PCBs (Polychlorinated biphenyls) (dioxin-like)Toxic Organics69794List on 303(d) list (being addressed by USEPA approved TMDL)Original5B — Addressed by USEPA-approved TMDLSan Francisco Bay PCBs—
SeleniumMetals141148Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)Revised5B — Addressed by USEPA-approved TMDLSan Francisco Bay Selenium - North Bay—

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
CAB2071002020011017135055
CALWNUM
2207.100000, 2207.210400, 2207.230200, 2207.240000, 2207.250000, 2207.310104, 2207.340100, 2207.400200
WBD code
180500010401, 180500010401, 180500010402, 180500010402, 180500010402, 180500010402, 180500010402, 180500010402, 180500010402, 180500010402, (Total Count: 15)
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
3805.75 Acres

Derived facility associations

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

Derived
Advanced Drainage Systems Inc

Benicia · Notice of Non-Applicability · 0.94 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Allios Inc

Benicia · No Exposure Certification · 0.80 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Alternative Biologics

Benicia · No Exposure Certification · 0.78 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

American Cabinetry

Benicia · No Exposure Certification · 0.72 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Bay Area Coffee inc

Benicia · No Exposure Certification · 0.77 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Bayshore Center

Benicia · Notice of Non-Applicability · 0.71 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

CE Toland Son

Benicia · Notice of Intent · 0.80 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Chemtrade West US LLC

Pittsburg · Notice of Intent · 0.66 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Clean Harbors Env Services Inc

Benicia · Notice of Intent · 0.59 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Custom Coils Inc

Benicia · No Exposure Certification · 0.46 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Flavor Insights

Benicia · No Exposure Certification · 0.81 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

JASS BOYS TRUCK LINES LLC

Bay Point · No Exposure Certification · 0.86 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Kaneka Aerospace LLC

Benicia · No Exposure Certification · 0.88 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Kent Odell Furniture

Benicia · No Exposure Certification · 0.71 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Lonza Consumer Health Inc - Benicia

Benicia · Notice of Non-Applicability · 0.80 km away

derived_receiving_water

Derived by California Stormwater Intelligence

MetlSaw Systems Inc

Benicia · Notice of Intent · 0.95 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Metropolitan Van and Storage

Benicia · Notice of Non-Applicability · 0.74 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Nature Health Science Inc

Benicia · Notice of Non-Applicability · 0.46 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Pacific Ozone Technologies

Benicia · No Exposure Certification · 0.87 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Pickett Racining

Benicia · Notice of Non-Applicability · 0.81 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

PJs Junk Removal

Benicia · Notice of Non-Applicability · 0.50 km away

derived_receiving_water

Derived by California Stormwater Intelligence

ProForm Laboratories

Benicia · No Exposure Certification · 0.86 km away

derived_receiving_water

Derived by California Stormwater Intelligence

REACH 032 100 - Contra Costa Concord

Concord · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Red Line Synthetic Oil Corp

Benicia · No Exposure Certification · 0.75 km away

derived_receiving_water

Derived by California Stormwater Intelligence

RIX INDUSTRIES

Benicia · No Exposure Certification · 0.66 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Schoenstein & Co

Benicia · No Exposure Certification · 0.52 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Underground Construction Co Inc

Benicia · Notice of Intent · 0.84 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Union Pacific Railroad Benicia

Benicia · Notice of Intent · 0.54 km away

derived_receiving_water

Derived by California Stormwater Intelligence

USS Posco Industries West Facilities

Pittsburg · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Wear Ever Mfg

Benicia · No Exposure Certification · 0.75 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Zephyr Express

Benicia · No Exposure Certification · 0.81 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.