Stormwater Management: Long Beach vs Pomona
How do stormwater management rules compare between Long Beach, CA and Pomona, CA?
Pomona has fewer restrictions than Long Beach.
Long Beach, CA
Los Angeles County
Long Beach's stormwater program under LBMC Ch. 8.96 prohibits non-stormwater discharge. Low Impact Development (LID) is required for projects adding 500+ sq ft. NPDES compliance is mandatory for all construction and development.
View full Long Beach rules →Pomona, CA
Los Angeles County
Pomona 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 Pomona rules →Key Facts Comparison
| Fact | Long Beach | Pomona |
|---|---|---|
| LID Threshold | 500 sq ft or more | - |
| Code | LBMC Ch. 8.96, Ch. 18.74 | - |
| Non-Stormwater | Discharge prohibited | - |
| Federal Law | Clean Water Act NPDES | - |
| 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.
Long Beach 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 Long Beach public works.
Pomona 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 Pomona public works.
Compare other topics
See how Long Beach and Pomona compare on other ordinance categories.
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