Norwalk vs West Covina
How do stormwater management rules compare between Norwalk, CA and West Covina, CA?
Norwalk and West Covina have similar restriction levels.
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 →West Covina, CA
Los Angeles County
West Covina enforces stormwater management under the LA County MS4 permit and NPDES requirements. Construction projects must implement BMPs. The city participates in the San Gabriel River watershed programs.
View full West Covina rules →Key Facts Comparison
| Fact | Norwalk | West Covina |
|---|---|---|
| New Development | Stormwater plan required | - |
| Runoff Control | On-site retention | - |
| Maintenance | Owner responsibility | - |
| Topic | Stormwater | - |
| Permit | - | LA County MS4 / NPDES |
| BMPs | - | Required for construction projects |
| Watershed | - | San Gabriel River |
| Authority | - | LA Regional Water Quality Control Board |
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.
West Covina 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 West Covina public works.
Compare other topics
See how Norwalk and West Covina compare on other ordinance categories.
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