California Stormwater Intelligence

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Waterbody profile

Official Water Board record · 2026 cycle

Aliso Creek (mouth)

Waterbody ID (WBID): CAE9011300019990208095945
County / counties: Orange
Regional Water Board: Regional Board 9 - San Diego Region
Waterbody type: Estuary
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 / stressor	Decision ID	Final listing decision	Decision status	TMDL requirement status	TMDL project	TMDL priority
Indicator BacteriaPathogens	70046	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Bacteria Impaired Waters I (creeks and beach shorelines)	—
ToxicityTotal Toxics	95760	List on 303(d) list (TMDL required list)	Original	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: Sep 16, 2026, 10:57 PM UTC
Waterbody ID: CAE9011300019990208095945
CALWNUM: 4901.130000, 4901.140000
WBD code: 180703010301, 180703010302
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: 0.04 Acres

Derived facility associations

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

Derived

A&J Manufacturing Company

Foothill Ranch · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Ace Tube Bending

Aliso Viejo · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Amazon com Services LLC DCX2

Mission Viejo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Astronic Incorperated

Aliso Viejo · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Capistrano USD Aliso Viejo

Aliso Viejo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

City of Laguna Beach Corporation Yard

Laguna Beach · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Coastal Treatment Plant

Laguna Niguel · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Confluent Medical Technologies

Laguna Niguel · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Confluent Medical Technologies

Laguna Niguel · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Confluent Medical Technologies

Laguna Niguel · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Mission Viejo · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

El Toro Water District

Lake Forest · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Guy F Atkinson Construction LLC

Laguna Hills · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Foothill Ranch · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Moulton Niguel Water District

Laguna Hills · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Nike Foothill Ranch

Lake Forest · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Foothill Ranch · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Pedroza Ready Mix

Lake Forest · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Reg Treatment Plant

Laguna Niguel · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Saddleback Valley Unified School District

Mission Viejo · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

UPS Laguna CALAG

Aliso Viejo · Notice of Intent

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.