What are the grease trap requirements in West Hollywood, CA?

Food service establishments in West Hollywood must install and maintain grease traps or interceptors per local FOG ordinances. The city follows the Uniform Plumbing Code (UPC).

Do I need a grease trap permit in West Hollywood?

Yes, a FOG permit is required in West Hollywood.

What size grease trap do I need for my restaurant in West Hollywood?

Grease trap sizing depends on your establishment's flow rate, number of fixtures, and local code requirements. Grease interceptor minimum 750 gallons (LA County standard); at least 30 minutes detention time; grease traps 25-75 gallons with minimum 25 GPM flow rate. Use our free sizing calculator for a recommendation.

Grease Trap Requirements
West Hollywood, CA

FOG compliance regulations for food service establishments in West Hollywood, California.

When FOG and solids reach 25%

Pumping Freq.

Required

Permit

Yes

25% Rule

UPC

Code Base

Pumping Requirements

Frequency When FOG and solids reach 25% of device depth (LA County FOG program standard)

25% Rule Applies

Permits & Enforcement

Permit Required Required

Complete FOG Regulations

Minimum Trap Size	Grease interceptor minimum 750 gallons (LA County standard); at least 30 minutes detention time; grease traps 25-75 gallons with minimum 25 GPM flow rate
Pumping Frequency	When FOG and solids reach 25% of device depth (LA County FOG program standard)
25% Rule	Yes — trap must be pumped when grease and solids reach 25% of capacity
Permit Required	Yes
Inspections	Periodic inspections by LA County Public Works Industrial Waste Unit
Record Keeping	Required — maintain pumping logs and manifests on-site
Plumbing Code	Uniform Plumbing Code (UPC)
Ordinance Ref.	LA County FOG Ordinance; West Hollywood Municipal Code; California Plumbing Code
Authority	LA County Public Works, Environmental Programs Division, Industrial Waste Unit

Additional Notes

West Hollywood is an incorporated city within LA County. Sewer service and FOG enforcement handled by LA County Public Works. An Industrial Waste Disposal Permit (IWDP) is required for businesses discharging FOG-laden wastewater. Existing approved pretreatment devices may remain in service if properly maintained and operating within original design parameters.

Regulations change frequently. Always verify current requirements with your local wastewater authority or plumbing inspector before making compliance decisions. Last updated: March 2026.