California Stormwater Intelligence

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Waterbody profile

Official Water Board record · 2026 cycle

Rattlesnake Reservoir (Orange County)

Waterbody ID (WBID): CAL8011100020210720053383
County / counties: Orange
Regional Water Board: Regional Board 8 - Santa Ana Region
Waterbody type: Lake & Reservoir
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
pHOther Cause	134124	List on 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: CAL8011100020210720053383
CALWNUM: 4801.11
WBD code: 180702040101
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: 36.31 Acres

Facilities with an NAL exceedance for a listed pollutant (1)

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

Schick Moving Storage Co8 30I002813

pH · most recent exceedance RY 2015 · 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

A&J Prototyping and Tooling Inc

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Abstrax Tech Inc

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

All American Asphalt

Irvine · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Avid Bioservices

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

BJB Enterprises Inc

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Braxton Caribbean Mfg Co Inc

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Do Well Laboratories

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Dow Avenue Warehouse

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Earthwise Packaging

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Freudenberg NOK Sealing Technologies

Santa Ana · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Grey Wolf Toolworks

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

IIVI Aerospace and Defense

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Intepro Systems

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Johnston International Corporation DBA Plasties

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Labels On Demand Incorporated

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

National Construction Rentals

Santa Ana · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

NEW HEALTH ENTERPRISE

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

NU Health Laboratories

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Tustin · Notice of Non-Applicability

derived_watershed_association

Derived by California Stormwater Intelligence

Schick Moving Storage Co

Tustin · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

SHR Precision Manchining

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Vit Best Nutrition Inc

Tustin · Notice of Intent

derived_watershed_association

Derived by California Stormwater Intelligence

Vitang Technology LLC

Tustin · No Exposure Certification

derived_watershed_association

Derived by California Stormwater Intelligence

Tustin · 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.