Murrieta Creek

Waterbody ID (WBID): CAR9023200020010924152136
County / counties: Riverside
Regional Water Board: Regional Board 9 - San Diego Region
Waterbody type: River & Stream
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (15)

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
Benthic Community EffectsOther Cause	126449	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
BifenthrinPesticides	111391	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ChlorpyrifosPesticides	111360	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
CopperMetals	111361	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Cyhalothrin, LambdaPesticides	111402	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Indicator BacteriaPathogens	127907	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
IronMetals	111368	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ManganeseMetals	111372	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
MercuryMetals	128174	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
NitrogenNutrients	132050	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Oxygen, DissolvedNutrients	111375	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
PhosphorusNutrients	111378	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
PyrethroidsPesticides	111389	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
ToxicityTotal Toxics	111385	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
TurbiditySediment	111386	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: Sep 16, 2026, 10:57 PM UTC
Waterbody ID: CAR9023200020010924152136
CALWNUM: 90252000
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: 11.93 Miles

Facilities with an NAL exceedance for a listed pollutant (3)

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

Heavy Metal Scrap Recycling9 33I025249

Iron · most recent exceedance RY 2019 · association: derived receiving water

Robertsons Murrieta Plant9 33I021686

Iron · most recent exceedance RY 2022 · association: derived receiving water

SA Recycling9 33I022862

Copper, Iron · most recent exceedance RY 2019 · association: derived receiving water

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

Amazon com Services LLC DUR9

Temecula · Notice of Intent · 0.27 km away

derived_receiving_water