What are the grease trap requirements in Fremont, CA?

Food service establishments in Fremont 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 Fremont?

Yes, a FOG permit is required in Fremont. Fee: Per Union Sanitary District fee schedule (contact USD).

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

Grease trap sizing depends on your establishment's flow rate, number of fixtures, and local code requirements. Non-grease-intensive: 200 lb grease trap; Grease-intensive (Mexican, Indian, Chinese, Buffets): minimum 1,500-gallon outside interceptor. Use our free sizing calculator for a recommendation.

Grease Trap Requirements
Fremont, CA

FOG compliance regulations for food service establishments in Fremont, California.

Before FOG/solids exceed 25% c

Pumping Freq.

Required

Permit

Yes

25% Rule

UPC

Code Base

Pumping Requirements

Frequency Before FOG/solids exceed 25% capacity; frequency per establishment type

25% Rule Applies

Permits & Enforcement

Permit Required Required

Permit Fee Per Union Sanitary District fee schedule (contact USD)

Max Fine Per USD Ordinance 38 enforcement provisions

Complete FOG Regulations

Minimum Trap Size	Non-grease-intensive: 200 lb grease trap; Grease-intensive (Mexican, Indian, Chinese, Buffets): minimum 1,500-gallon outside interceptor
Pumping Frequency	Before FOG/solids exceed 25% capacity; frequency per establishment type
25% Rule	Yes — trap must be pumped when grease and solids reach 25% of capacity
Permit Required	Yes
Permit Fee	Per Union Sanitary District fee schedule (contact USD)
Maximum Fine	Per USD Ordinance 38 enforcement provisions
Inspections	Routine FOG inspections on regular basis by USD
Record Keeping	Required — maintain pumping logs and manifests on-site
Plumbing Code	Uniform Plumbing Code (UPC)
Ordinance Ref.	Union Sanitary District Ordinance No. 38; City of Fremont Ordinance No. 2012
Authority	Union Sanitary District (USD)

Additional Notes

USD serves Fremont, Newark, and Union City. All potential grease-bearing fixtures must connect to grease removal device. Garbage disposals/food grinders prohibited in FSEs. Dishwashers shall not connect to grease removal devices. Size dictated by FSE type, permit application, and menu review. Contact FOG Coordinator at (510) 477-7630.

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