Waterbody profile

Official Water Board record · 2026 cycle

Newport Bay, Upper (Ecological Reserve)

Waterbody ID (WBID): CAE8011400019990323090803
County / counties: Orange
Regional Water Board: Regional Board 8 - Santa Ana Region
Waterbody type: Estuary
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 / stressor	Decision ID	Final listing decision	Decision status	TMDL requirement status	TMDL project	TMDL priority
ChlordanePesticides	132474	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Newport Bay Watershed Organochlorine Compounds TMDL	—
CopperMetals	132476	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	High
DDT (Dichlorodiphenyltrichloroethane)Pesticides	149251	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Newport Bay Watershed Organochlorine Compounds TMDL	—
Indicator BacteriaPathogens	149163	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Newport Bay Watershed Fecal Coliform TMDL	—
NutrientsNutrients	68114	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Newport Bay Watershed Nutrient TMDL	—
PCBs (Polychlorinated biphenyls)Toxic Organics	132488	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Newport Bay Watershed Organochlorine Compounds TMDL	—
Sedimentation/SiltationSediment	68057	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Newport Bay Watershed Sediment TMDL	—
ToxicityTotal Toxics	69700	Do Not Delist from 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Medium

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: CAE8011400019990323090803
CALWNUM: 4801.110000, 4801.140000
WBD code: 180702040103, 180702040201
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.

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Watershed: —
Assessed size: 87.93 Acres

Facilities with an NAL exceedance for a listed pollutant (24)

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

ACD LLC8 30I027856

Copper · most recent exceedance RY 2024 · association: derived watershed association

Active Plating Inc8 30I025244

Copper · most recent exceedance RY 2024 · association: derived watershed association

Aerospace Engineering8 30I030063

Copper · most recent exceedance RY 2024 · association: derived watershed association

Aluminum Precision Products8 30I004913

Copper · most recent exceedance RY 2021 · association: derived watershed association

Basin Marine Inc8 30I019948

Copper · most recent exceedance RY 2018 · association: derived nearby in watershed

Brasstech Inc8 30I018580

Copper · most recent exceedance RY 2022 · association: derived watershed association

Brasstech Inc8 30I029279

Copper · most recent exceedance RY 2022 · association: derived watershed association

Bruce Metal Salvage Inc8 30MR000029

Copper · most recent exceedance RY 2025 · association: derived watershed association

Chromadora Inc8 30I025590

Copper · most recent exceedance RY 2015 · association: derived watershed association

Embee Processing8 30I027584

Copper · most recent exceedance RY 2022 · association: derived watershed association

Griswold Industries8 30I004382

Copper · most recent exceedance RY 2025 · association: derived watershed association

Hixson Metal Finishing8 30I010178

Copper · most recent exceedance RY 2025 · association: derived watershed association

Integrity Metal Inc8 30MR000082

Copper · most recent exceedance RY 2024 · association: derived watershed association

Interplex Nascal Inc8 30I024652

Copper · most recent exceedance RY 2021 · association: derived watershed association

JWC ENVIRONMENTAL INC8 30I028134

Copper · most recent exceedance RY 2022 · association: derived watershed association

Larsons Shipyard LLC8 30I025767

Copper · most recent exceedance RY 2018 · association: derived watershed association

Markland Manufacturing Inc8 30I012125

Copper · most recent exceedance RY 2022 · association: derived watershed association

Metal Improvement Co LLC8 30I014808

Copper · most recent exceedance RY 2023 · association: derived watershed association

OC John Wayne Airport8 30I005741

Copper · most recent exceedance RY 2020 · association: derived watershed association

PCC Rollmet Inc8 30I023346

Copper · most recent exceedance RY 2021 · association: derived watershed association

Precious Metal Plating Co8 30I004149

Copper · most recent exceedance RY 2020 · association: derived watershed association

Sanmina Corp8 30I017804

Copper · most recent exceedance RY 2021 · association: derived watershed association

South Coast Shipyard South8 30I018762

Copper · most recent exceedance RY 2015 · association: derived watershed association

Toyota Racing Development USA Inc8 30I016707

Copper · most recent exceedance RY 2017 · 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

3M Irvine Dental

Irvine · Notice of Intent

derived_watershed_association