Stormwater Management: Altadena vs Inglewood
How do stormwater management rules compare between Altadena, CA and Inglewood, CA?
Altadena and Inglewood have similar restriction levels.
Altadena, CA
Los Angeles County
LA County operates under a regional MS4 permit issued by the LA Regional Water Quality Control Board. LA County Code Title 12 prohibits discharging non-stormwater (sediment, chemicals, paint, sewage, washwater) into storm drains.
View full Altadena rules →Inglewood, CA
Los Angeles County
Inglewood has a detailed Stormwater Management and Discharge Control ordinance. The Director maintains a LID Standards Manual. Development projects must submit Stormwater Mitigation Plans. Construction sites under 1 acre must implement erosion/sediment control BMPs. Machinery must be shielded from stormwater exposure.
View full Inglewood rules →Key Facts Comparison
| Fact | Altadena | Inglewood |
|---|---|---|
| Authority | LA County Code Title 12 + State Water Board MS4 | - |
| Construction SWPPP | Required ≥1 acre disturbance | - |
| Illicit Discharge Hotline | (888) CLEAN-LA | - |
| Code | - | IMC Stormwater Management chapter |
| LID Manual | - | Maintained by Director |
| Construction | - | Erosion BMPs required even <1 acre |
| NPDES | - | Municipal permit compliance required |
Highlighted rows indicate differences between cities.
Altadena FAQ
Can I hose my driveway into the gutter in Altadena?
Generally no — soapy or sediment-laden runoff into the storm drain violates the LA County NPDES MS4 permit and Title 12.
Inglewood 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 Inglewood public works.
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