Waterbody profile
Official Water Board record · 2026 cycleEach 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 | 125926 | Do Not Delist from 303(d) list (TMDL required list) | Revised | 5A — TMDL still required | — | Low |
| Indicator BacteriaPathogens | 79858 | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) | Original | 5B — Addressed by USEPA-approved TMDL | Bacteria Impaired Waters I (creeks and beach shorelines) | — |
| MalathionPesticides | 81901 | List on 303(d) list (TMDL required list) | Original | 5A — TMDL still required | — | Low |
| NitrogenNutrients | 127601 | Do Not Delist from 303(d) list (TMDL required list) | Revised | 5A — TMDL still required | — | Low |
| PhosphorusNutrients | 111092 | Do Not Delist from 303(d) list (TMDL required list) | Revised | 5A — TMDL still required | — | Low |
| SeleniumMetals | 111093 | Do Not Delist from 303(d) list (TMDL required list) | Revised | 5A — TMDL still required | — | Low |
| ToxicityTotal Toxics | 111095 | Do Not Delist from 303(d) list (TMDL required list) | Revised | 5A — TMDL still required | — | Low |
Official 2026 Water Board geometry. Demonstration facility markers are shown for context only.
Geographically associated industrial stormwater facilities whose reported results exceeded an Industrial General Permit Numeric Action Level for a pollutant this waterbody is listed for.
Coastal Treatment Plant9 30I005780
Phosphorus · most recent exceedance RY 2016 · association: derived nearby in watershed
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.
Industrial stormwater facilities geographically associated with this waterbody. These are derived spatial associations, not Water Board findings.
Foothill Ranch · No Exposure Certification · 0.81 km away
Derived by California Stormwater Intelligence
Aliso Viejo · No Exposure Certification · 0.94 km away
Derived by California Stormwater Intelligence
Mission Viejo · Notice of Intent · 0.72 km away
Derived by California Stormwater Intelligence
Aliso Viejo · No Exposure Certification · 0.73 km away
Derived by California Stormwater Intelligence
Lake Forest · No Exposure Certification · 0.68 km away
Derived by California Stormwater Intelligence
Lake Forest · No Exposure Certification · 0.86 km away
Derived by California Stormwater Intelligence
Lake Forest · No Exposure Certification · 0.81 km away
Derived by California Stormwater Intelligence
Aliso Viejo · Notice of Intent
Derived by California Stormwater Intelligence
Laguna Niguel · Notice of Intent · 0.54 km away
Derived by California Stormwater Intelligence
Laguna Niguel · No Exposure Certification · 0.68 km away
Derived by California Stormwater Intelligence
Laguna Niguel · No Exposure Certification · 0.74 km away
Derived by California Stormwater Intelligence
Laguna Niguel · No Exposure Certification · 0.68 km away
Derived by California Stormwater Intelligence
Mission Viejo · Notice of Non-Applicability · 0.11 km away
Derived by California Stormwater Intelligence
Lake Forest · Notice of Intent · 0.70 km away
Derived by California Stormwater Intelligence
Lake Forest · Notice of Intent · 0.33 km away
Derived by California Stormwater Intelligence
Laguna Hills · Notice of Intent · 0.83 km away
Derived by California Stormwater Intelligence
Foothill Ranch · No Exposure Certification · 0.70 km away
Derived by California Stormwater Intelligence
Laguna Hills · No Exposure Certification · 0.76 km away
Derived by California Stormwater Intelligence
Lake Forest · No Exposure Certification
Derived by California Stormwater Intelligence
Foothill Ranch · Notice of Intent
Derived by California Stormwater Intelligence
Lake Forest · Notice of Intent · 0.26 km away
Derived by California Stormwater Intelligence
Laguna Niguel · Notice of Intent
Derived by California Stormwater Intelligence
Lake Forest · No Exposure Certification · 0.85 km away
Derived by California Stormwater Intelligence
Mission Viejo · Notice of Intent · 0.52 km away
Derived by California Stormwater Intelligence
Aliso Viejo · Notice of Intent
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.