Grease Trap Requirements
Bainbridge Island, WA

FOG Compliance in Bainbridge Island, WA

Food service establishments in Bainbridge Island operate under a combination of federal EPA pretreatment standards, Washington state plumbing code, and city-level FOG ordinances. Together these rules determine how grease traps must be sized, how often they must be pumped, and what happens when a restaurant falls out of compliance.

Pumping frequency is the compliance rule restaurant owners interact with most often. In Bainbridge Island, the rule is: annual. This is more lenient than the US median, typical of jurisdictions with lower-volume food service sectors. The city follows the Uniform Plumbing Code (UPC) for trap sizing and installation. Under Section 1014, which applies a fixture drainage load formula with a retention time factor, grease interceptors installed in Bainbridge Island must meet minimum capacity thresholds based on the fixtures connected to them — 3-compartment sinks, dishwashers, pre-rinse stations, wok stoves, and floor drains on the cook line. The local minimum trap size is: Sizes referenced in local code: 50, 100, 75, 500, 750 gallons.

For a deeper explanation of the rules this city enforces, read our guides on how grease traps work and the 25/50 pumping rule.