Stormwater Management: Anaheim vs Newport Beach
How do stormwater management rules compare between Anaheim, CA and Newport Beach, CA?
Anaheim has fewer restrictions than Newport Beach.
Anaheim, CA
Orange County
Anaheim participates in the North Orange County stormwater program under the MS4 permit regulated by the Santa Ana Regional Water Quality Control Board. New development must incorporate stormwater BMPs.
View full Anaheim rules →Newport Beach, CA
Orange County
Newport Beach enforces strict stormwater management regulations to protect Newport Bay, the ocean, and coastal waterways. The city's NPDES permit requires construction sites, businesses, and property owners to implement best management practices preventing polluted runoff. New development and significant redevelopment must incorporate post-construction water quality features.
View full Newport Beach rules →Key Facts Comparison
| Fact | Anaheim | Newport Beach |
|---|---|---|
| Permit | North OC MS4 | - |
| WQMP | Required for new dev | - |
| Board | Santa Ana RWQCB | - |
| Watershed | Santa Ana River | - |
| WQMP Trigger | - | 500+ sq ft disturbance |
| Post-Construction | - | 2,500+ sq ft impervious surface |
| Discharge Fine | - | Starting at $500 per day |
| Code Section | - | NBMC Chapter 14.36 |
Highlighted rows indicate differences between cities.
Anaheim FAQ
What stormwater permits does Anaheim require?
New development must prepare a WQMP with stormwater BMPs. The city operates under the North OC MS4 permit from the Santa Ana Regional Water Quality Control Board.
Can I wash my car and let water run to the storm drain?
No. Only rainwater should enter storm drains. Wash cars on permeable surfaces or at commercial car washes that recycle water.
Newport Beach FAQ
What triggers stormwater requirements for my Newport Beach project?
Projects disturbing 500 or more square feet of land require a Water Quality Management Plan. Projects creating 2,500 or more square feet of impervious surface must include permanent water quality treatment features in the design.
Can I wash my car and let water flow to the street in Newport Beach?
Washing vehicles on the street where runoff enters storm drains is prohibited. Wash vehicles on permeable surfaces like lawns, use a commercial car wash, or ensure all wash water is captured and directed to the sanitary sewer.
Who enforces stormwater rules in Newport Beach?
The Public Works Department Water Quality division enforces stormwater regulations. Report illicit discharges or construction site runoff to (949) 644-3215 or the city's water quality hotline.
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