Phoenix FOG & grease interceptor rules
Concrete City of Phoenix requirements for food service establishments (FSEs) using grease interceptors.
Permit and interceptor sizing
Requirement: Phoenix grease interceptors must be sized under the City’s adopted plumbing codes.
Official text: "Sizing for gravity and hydromechanical grease interceptors is based on City of Phoenix Amended International and Uniform Plumbing Codes and can be found on the City of Phoenix website at https://www.phoenix.gov/pddsite/Pages/buildingcodeindex.aspx."
25-percent cleaning rule
Requirement: An FSE must fully clean its interceptor when FOG and solids exceed 25 percent of capacity.
Official text: "Most types of interceptors stop working effectively when fats, oils, and solids reach 25% of the device’s capacity. If the FOG and solids occupy greater than 25% of the interceptor’s capacity, the FSE is required to perform a full cleaning of the interceptor."
Three-year maintenance records
Requirement: Maintenance records and contractor invoices must remain available onsite for three years.
Official text: "All records documenting maintenance activities, including invoices provided by third-party service contractors, need to be available on site for three years per PCC Chapter 28. Upon request, the user or owner must be able to provide the City with any documentation necessary to demonstrate that the maintenance requirements and frequencies are being met."