California Stormwater Intelligence

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Waterbody profile

Official Water Board record · 2026 cycle

Pacific Ocean Shoreline, Aliso HSA, at Aliso Creek mouth

Waterbody ID (WBID): CAC9011300020090525212513
County / counties: Orange
Regional Water Board: Regional Board 9 - San Diego Region
Waterbody type: Coastal & Bay Shoreline
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	145383	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Bacteria Impaired Waters I (creeks and beach shorelines)	—
ToxicityTotal Toxics	84122	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: Aug 21, 2026, 12:44 AM UTC
Waterbody ID: CAC9011300020090525212513
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: 0.15 Miles

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

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.