← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Washington Creek subwatershed (Sonoma County, tributary to Petaluma River)

Waterbody ID (WBID)
CAR2063001020210705056632
County / counties
Sonoma
Regional Water Board
Regional Board 2 - San Francisco Bay Region
Waterbody type
River & Stream
Condition category
Category 5 — 303(d) listed, TMDL required
Integrated Report cycle
2026

303(d) listings (2)

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
Indicator BacteriaPathogens148788List on 303(d) list (being addressed by USEPA approved TMDL)Revised5B — Addressed by USEPA-approved TMDLPetaluma River Bacteria TMDL—
Oxygen, DissolvedNutrients144610List on 303(d) list (TMDL required list)Revised5A — 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
Sep 16, 2026, 10:56 PM UTC
Waterbody ID
CAR2063001020210705056632
CALWNUM
2206.300103, 2206.300400
WBD code
180500020601
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
8.37 Miles

Derived facility associations

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

Derived
Arcturus UAV Inc

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Brooks Note Winery

Petaluma · No Exposure Certification · 0.74 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Castle Inc

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Clover Sonoma Inc

Petaluma · Notice of Intent · 0.63 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Colvin Friedman Company

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

DEWEYL TOOL COMPANY INC

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Divine Delights inc

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Donal Machine Inc

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Doug White Industries

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

FedEx Freight Petaluma

Petaluma · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Gibson Brands Inc Mesa Boogie

Petaluma · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Hoocha LLC

Petaluma · No Exposure Certification · 0.81 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Hunt Behrens Inc

Petaluma · Notice of Intent · 0.65 km away

derived_receiving_water

Derived by California Stormwater Intelligence

JRL Machine & Driveline Inc

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

KAL TOOL ENGINEERING

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Mala Closure Systems Inc

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Mama Mels Bread

Petaluma · No Exposure Certification · 0.90 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Mountjoy Enterprises Inc

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

MV Transportation Div 24

Petaluma · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

North Bay Development Company LLC

Petaluma · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

north bay precision machining

Petaluma · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Petaluma City Schools Transportation Yard

Petaluma · Notice of Intent · 1.00 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Petaluma Minuteman Inc

Petaluma · No Exposure Certification · 0.71 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Petaluma Municipal Airport

Petaluma · Notice of Intent · 0.39 km away

derived_nearby_in_watershed

Derived by California Stormwater Intelligence

Probiotic Productions LLC

Petaluma · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Protofab Incorporated

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Recology Sonoma Marin

Petaluma · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Rogue Research

Petaluma · No Exposure Certification · 0.81 km away

derived_receiving_water

Derived by California Stormwater Intelligence

Security People Inc dba Digilock

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Seton Scientific Inc

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Small Precision Tools

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Sonoma Salad Company

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

The Lagunitas Brewing Company

Petaluma · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

TOBYS TRUCKING

Petaluma · No Exposure Certification · 0.87 km away

derived_receiving_water

Derived by California Stormwater Intelligence

VenTek Transit Inc

Petaluma · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Xandex Incorporated Headquarters

Petaluma · 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.