El Monte vs Norwalk
How do stormwater management rules compare between El Monte, CA and Norwalk, CA?
El Monte and Norwalk have similar restriction levels.
El Monte, CA
Los Angeles County
El Monte is developing a Stormwater Urban Master Plan to improve water quality. The city participates in the LA County MS4 NPDES permit. New development must implement BMPs. Report illicit discharges to Public Works at (626) 580-2250.
View full El Monte rules →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 →Key Facts Comparison
| Fact | El Monte | Norwalk |
|---|---|---|
| Permit | LA County MS4 NPDES | - |
| Master Plan | Stormwater Urban Master Plan | - |
| Report | Public Works (626) 580-2250 | - |
| BMPs | Required for new development | - |
| New Development | - | Stormwater plan required |
| Runoff Control | - | On-site retention |
| Maintenance | - | Owner responsibility |
| Topic | - | Stormwater |
Highlighted rows indicate differences between cities.
El Monte 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 El Monte public works.
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.
Compare other topics
See how El Monte and Norwalk compare on other ordinance categories.
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