California FOG & Grease Trap Rules
California requirements vary by sanitation district and city. The verified local programs below are not a single statewide schedule.
Orange County Sanitation District
Food service establishments must obtain a FOG wastewater-discharge permit and use approved grease interceptors. Pump or clean an interceptor when FOG or solids exceed 25% of design hydraulic depth and at least every six months. Covered establishments are inspected at least annually, and records are part of the source-control program.
San Diego
San Diego food service establishments need a Food Establishment Wastewater Discharge permit and approved grease interceptors. The program includes plan check and permit conditions under Municipal Code §64.0703.
Lake County Special Districts
The county FAQ recommends the 25% rule and says gravity grease interceptors should be pumped at least every three months.
Pleasanton
Pleasanton’s FOG manual calls for pumping at least every 60 days or when the device reaches 25%, whichever comes first, and describes an inspection and maintenance program.
Local rules
Los Angeles
Los Angeles requires an industrial-wastewater permit, a 750-gallon minimum interceptor for listed installations, and city inspection and control fees. LA detail
San Francisco
SFPUC Category 1 businesses use certified grease-removal devices, receive a discharger permit, and are subject to inspection and operating requirements. SF detail
Santa Clara
Santa Clara requires a code-sized device; grease traps are serviced every 30 days and interceptors every 90 days or at 25% full. Santa Clara detail