California Stormwater Intelligence

← Impaired waters

Waterbody profile

Official Water Board record · 2026 cycle

Newport Slough

Waterbody ID (WBID): CAR8011100020011107123409
County / counties: Orange
Regional Water Board: Regional Board 8 - Santa Ana Region
Waterbody type: River & Stream
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (1)

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
Indicator BacteriaPathogens	149165	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: CAR8011100020011107123409
CALWNUM: 4801.11
WBD code: 180702031003
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.

Loading map…

Watershed: —
Assessed size: 1 Miles

Derived facility associations

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

Derived

Santa Ana · Region 8 - Scrap Metal Permit

derived_watershed_association

Derived by California Stormwater Intelligence

A&G Electropolish

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Costa Mesa · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Acapulco Printing Services

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Airborne Systems North America

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Aluminum Precision Product

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Aluminum Precision Products

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

ALYSTA CORPORATION

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

American Cooling Tower Inc

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Applied Material Technologies

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Associated Ready Mixed Concrete

Fountain Valley · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

ASTC Polymers INC

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Avatar Machine LLC

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Aviation Equipment Processing

Costa Mesa · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

B and F Modern Manufacturing Inc

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Behr Process Corp Alton

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Behr Process Corp Garry

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Behr Process Corp Yale Facility

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Beo Mag Plating Inc

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Best Sign Products Inc

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

BILT MACHINING LLC

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Brothers International Desserts

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Bush Polishing & Chrome

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

C & H Letterpress Inc

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Cambro Manufacturing Company Clay

Huntington Beach · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Chevy Truck & Foreign Auto

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Cisco Systems Inc Costa Mesa

Costa Mesa · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

CJT Enterprises Inc

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Ana · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Ana · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Data Electronic Services

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Deschner Corporation

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Design Catapult Manufacturing

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Dist Operations

Fountain Valley · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Durham Trans Inc

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Epic Ceramic and Stone Inc

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Fabrica International

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Costa Mesa · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

First Student Inc 20462

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Fountain Valley Self Storage

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

GB CNC SERVICES LLC

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Genie Scientific Corp

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Goodwill Industries of Orange County

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Green Cheek Beer Company LLC

Costa Mesa · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Costa Mesa · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

HeartStitch Inc

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

INFOCUS CNC MACHINING INC

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

JD Processing Inc

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Jorgenson Metal Rolling & Forming

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Joy Products of California Inc

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Kha Products Inc

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Kingston Technology

Fountain Valley · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

KUSTOMIZED INNOVATIVE COSMETICS

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Kyocera Precision Tools

Costa Mesa · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Laguna Cookie Co

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Metalcrafters Transparencies and Composites Inc

Fountain Valley · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Moreland Manufacturing Inc dba Coast Label Company

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Newport Laminates Inc

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Newport Mesa Unified School District

Costa Mesa · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Omni Metal Finishing Inc

Fountain Valley · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Orange County Water District

Fountain Valley · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pacific Western Container

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Parker Printing

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

PARPRO TECHNOLOGIES INC

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Phillips Medisize

Costa Mesa · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Pioneer Circuits

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Power Distribution Inc

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Precision European Inc

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Promotional Signs

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Costa Mesa · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Costa Mesa · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Fountain Valley · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Costa Mesa · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Quantum Auto Dismantler

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Costa Mesa · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

RBC Transport Dynamics

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

refuge printing

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Reid Metal Finishing

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

RICH PRODUCTS CORPORATION

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Richards Label Company

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

RideFast Racing LLC

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Robertsons Ready Mix Santa Ana

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Robinson Pharma Inc

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Robinson Pharma Inc Harbor 2

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Robinson Pharma Inc Croddy

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Roman Shades West Inc

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Royce Woodworking

Costa Mesa · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

S & S Precision Manufacturing Inc

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

S&T Precision Machining

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

SA Recycling LLC

Santa Ana · Region 8 - Scrap Metal Permit

derived_watershed_association

Derived by California Stormwater Intelligence

Safety Kleen Corp Santa Ana Bra

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Schneider Electric

Costa Mesa · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Seabreeze Machining Incorporated

Huntington Beach · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Solution Engineering

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Strata Forest Products Inc

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Synergistic Research

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

TDI2 CUSTOM PACKAGING INC

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

TDI2 CUSTOM PACKAGING INC

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Triple Dot Corp

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

TTM Technologies North America LLC

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

TTM Technologies North America LLC

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Universal Waste Systems Inc

Costa Mesa · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Vertical Ride Solutions

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Watt Enterprises Inc

Fountain Valley · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Wet Okole Hawaii Inc.

Costa Mesa · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Fountain Valley · 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.