Grease Trap & Grease Interceptor Plan Check

 As one of the requirements prior to the issuance of a Plumbing Permit by Long Beach Development Services (formerly Building and Planning Department), a plumbing permit applicant must go through plan review with the Long Beach Water Department (LBWD) for sewer protection requirement(s). All restaurants, commercial kitchens,  and facilities where food is prepared and served to the public are required to comply with this requirement(s).

Minimum Grease Trap/Interceptor Plan Check Requirements

  • Full payment. Please make your check payable to Long Beach Water Department. For applicable fees, see  LBWD Rules & Regulations (View Appendix B, 2B, Page 81)
  • Three (3) sets of your plumbing plans with your establishment name and address shown, minimum size of 11”x17”
  • Show all kitchen equipment and fixture schedule specifying which fixtures will drain to the grease device. Garbage disposals and/or dishwashers shall not discharge or connect to the grease device
  • Dishwasher pre‐rinse must drain to the interceptor
  • The sizing calculation for your grease device shall be included on your plan and shall comply with the California Plumbing Code. The minimum size for smaller
    under‐the‐sink grease trap shall be 20 gpm. The size for grease interceptors located outside the buildings will be based on the sizing calculation. Grease traps must be listed by the International Associate of Plumbing and Mechanical Officials (IAPMO). 
  • Your plan shall contain the information for the proposed grease device including the manufacturer name, make, model number, size, and flow capacity. A copy of the grease device specifications shall be printed on your plan
  • Your plan shall show and label the kitchen equipment, fixtures, piping, and the proposed grease device.
  • Your plan shall show the grease waste lines marked as “GW” and sewer lines marked as “S”
  • Approval of the proposed location by the Long Beach Health Department is also required

Please submit your information to:

Long Beach Water Department
Engineering Bureau – Business Development
1800 E. Wardlow Road
Long Beach, CA 90807

  • An appointment is required for the over‐the‐counter grease trap/interceptor plan review. Please call (562) 570‐2419 to make an appointment
  • For any existing grease devices that will be utilized after a renovation or for a new facility or business, an inspection by an LBWD Fats, Oil, and Grease (FOG) Inspector is required prior to plan approval. The existing device must be pumped out, cleaned, and dried prior to scheduling the inspection. Please call (562) 570‐2419 to make an inspection appointment

For any questions related to the Grease Trap/Interceptor review process, please contact us at:


Call:         (562) 570‐2419