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🌍 Environmental Rules/Stormwater Management

Stormwater Management: Glendale vs Santa Clarita

How do stormwater management rules compare between Glendale, CA and Santa Clarita, CA?

Glendale and Santa Clarita have similar restriction levels.

Glendale, CA

Los Angeles County

Some Restrictions

Glendale participates in the LA County MS4 NPDES permit program. Stormwater discharge to the municipal system must comply with the permit. Low Impact Development standards apply to new construction and redevelopment.

View full Glendale rules β†’

Santa Clarita, CA

Los Angeles County

Some Restrictions

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 β†’

Key Facts Comparison

FactGlendaleSanta Clarita
NPDESLA County MS4 permit-
LIDRequired for new developmentRequired for new development
Illicit DischargeProhibitedProhibited
ConstructionSWPPP required for 1+ acre-
MS4 Permit-LA County requirements apply
Watershed-Santa Clara River

Highlighted rows indicate differences between cities.

Glendale 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 Glendale public works.

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.

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