Los Angeles Grease Trap Requirements for Restaurants

Los Angeles Local Grease Trap Regulations

The Los Angeles Department of Public Health requires all food service establishments to install and maintain grease traps or interceptors based on facility size and waste volume. Grease traps must be sized according to peak wastewater flow and cleaned on a schedule determined by the Los Angeles Municipal Code (LAMC Title 104). Most restaurants in LA require professional cleaning every 25–45 days, depending on usage intensity and trap capacity. The city prohibits disposal of cooking grease, fats, and oils down drains; violations can result in civil penalties ranging from $250 to $10,000 and potential loss of operating permits.

California State Plumbing Code Requirements

California's Title 24 plumbing standards mandate that grease interceptors and traps meet specific design and installation criteria statewide. All devices must be accessible for inspection and cleaning, located outside or in designated indoor areas with proper ventilation, and installed with bypass systems to prevent system overflow during peak loads. The California Department of Consumer Affairs, through the Contractors State License Board, enforces compliance for licensed plumbers performing installations. State regulations require documentation of trap capacity, maintenance records, and professional cleaning receipts, which must be retained for a minimum of three years.

How LA & State Rules Differ from Federal Standards

Federal regulations (primarily EPA guidance and USEPA Clean Water Act provisions) set general wastewater quality standards but do not dictate specific grease trap sizes or cleaning frequencies—these are determined by state and local jurisdictions. Los Angeles enforces stricter local schedules and monitoring than many other California municipalities, reflecting the region's aging sewer infrastructure and recurring sanitary sewer overflow issues. Unlike federal standards, LA requires food service establishments to report grease discharge incidents to the Department of Public Works and may mandate additional pretreatment during wet-weather seasons, making Los Angeles compliance more rigorous than federal minimums alone.

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