Norwalk vs Pasadena
How do stormwater management rules compare between Norwalk, CA and Pasadena, CA?
Norwalk has fewer restrictions than Pasadena.
Norwalk, CA
Los Angeles County
Norwalk requires stormwater management for new development and significant property modifications. Runoff must be controlled on-site through retention, detention, or infiltration systems.
View full Norwalk rules →Pasadena, CA
Los Angeles County
Pasadena's Stormwater Management and Discharge Control (PMC Chapter 8.70) prohibits illicit discharge to the municipal stormwater system. LID plans required for new development must retain the 85th percentile storm on-site. NPDES permit compliance mandatory.
View full Pasadena rules →Key Facts Comparison
| Fact | Norwalk | Pasadena |
|---|---|---|
| New Development | Stormwater plan required | - |
| Runoff Control | On-site retention | - |
| Maintenance | Owner responsibility | - |
| Topic | Stormwater | - |
| Code Section | - | PMC Chapter 8.70 |
| LID | - | Retain 85th percentile storm |
| NPDES | - | LA County MS4 permit |
| Design Volume | - | 1.0-1.2 inches per hour |
Highlighted rows indicate differences between cities.
Norwalk 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 Norwalk public works.
Pasadena 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 Pasadena public works.
Compare other topics
See how Norwalk and Pasadena compare on other ordinance categories.
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