Fats, Oils and Grease Frequently Asked Questions

What is the Fats, Oils and Grease Control Program?
The Hi-Desert Water District (District) is the owner of the public sewer system serving the Town of Yucca Valley and is responsible for keeping the sewer system functioning properly. The State of California has required the District to implement a comprehensive Fats, Oils and Grease (FOG) Control Program to prevent blockages in the sewer lines that can cause overflows and spills.

Why do I need to submit plans to the HDWD for FOG Program review?
HDWD FOG Program review of Food Service Establishment (FSE) plans is required to ensure that the new (or modified) facility meets current FOG Program rules and regulations.

Does my facility require a grease interceptor?
A grease interceptor is required if your establishment is: 1) a new construction of a food service establishment, 2) an existing food service establishment undergoing a change in ownership, 3) an existing food service establishment undergoing a change in operations, or 4) an existing food service establishment undergoing a remodel that includes under-slab plumbing, increased seating, increased kitchen area, or changes to the size or type of food preparation equipment.

What size grease interceptor is required?
Grease interceptor sizing is based on the drainage fixture units (DFU) connected to the grease interceptor, pursuant to the current California Plumbing Code (CPC), table 10-3. The Town of Yucca Valley Building Department issues permits for the installation of new grease interceptors.

Which fixtures/drains are required to be connected to the grease interceptor?
All potential grease bearing fixtures and drains (cooking equipment drains, pot sinks, 3-compartment sinks, mop sinks, dishwasher pre-rinse sinks, prep sinks, floor sinks, floor drains) in the food preparation, cooking and cleanup areas of the facility are required to be connected to the grease interceptor.

Are there any kitchen fixtures/drains that should not be connected to the grease interceptor?
The drainage from the automatic dishwashers should not be connected to the grease interceptor (Note: the dishwasher pre-rinse sink must be connected to the interceptor).

Will my food service establishment be inspected?
Yes.  Soon after your facility begins operations, a HDWD FOG Compliance Inspector will conduct an inspection of your facility to assist you with your understanding of the FOG Program. Routine FOG inspections are then conducted on a regular basis to ensure continued compliance with the FOG Program rules and regulations.

Is there a FOG Program Permit?
Yes. Each food facility in the District's service area is issued a FOG Waste Discharge Permit that identifies the general requirements of the HDWD FOG Control Program. The permit will also identify any special requirements that apply uniquely to an individual establishment.