Stormwater Management: Santa Clarita vs Santa Monica
How do stormwater management rules compare between Santa Clarita, CA and Santa Monica, CA?
Santa Clarita has fewer restrictions than Santa Monica.
Santa Clarita, CA
Los Angeles County
Santa Clarita enforces LA County MS4 stormwater permit requirements. New development must manage runoff with LID features. The Santa Clara River watershed is a key concern.
View full Santa Clarita rules →Santa Monica, CA
Los Angeles County
Santa Monica operates a stormwater utility under the municipal code with user fees on all parcels. The city promotes runoff conservation and sustainable management for water sustainability. LID and stormwater harvesting are strongly encouraged.
View full Santa Monica rules →Key Facts Comparison
| Fact | Santa Clarita | Santa Monica |
|---|---|---|
| MS4 Permit | LA County requirements apply | - |
| LID | Required for new development | Encouraged for all development |
| Watershed | Santa Clara River | - |
| Illicit Discharge | Prohibited | - |
| Stormwater Utility | - | User fee on all parcels |
| Runoff Conservation | - | SMMC Ch. 7.10 |
| Water Sustainability | - | Rainwater/stormwater reuse promoted |
Highlighted rows indicate differences between cities.
Santa Clarita FAQ
Do I need a stormwater plan for my project?
Generally required for new construction and major renovations that increase impervious surface area. Small residential projects may be exempt.
What is an illicit discharge?
Any non-stormwater substance entering the storm drain system, including paint, oil, chemicals, or sediment. Report violations to Santa Clarita public works.
Santa Monica FAQ
Do I need a stormwater plan for my project?
Generally required for new construction and major renovations that increase impervious surface area. Small residential projects may be exempt.
What is an illicit discharge?
Any non-stormwater substance entering the storm drain system, including paint, oil, chemicals, or sediment. Report violations to Santa Monica public works.
Compare other topics
See how Santa Clarita and Santa Monica compare on other ordinance categories.
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