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Commercial Establishments and FOGs

All commercial establishments discharging into the County wastewater collection system must submit a Wastewater Discharge Permit B Application and receive a Wastewater Discharge Permit before discharging into the County sewer system.

Under Anne Arundel County Code, any establishment that introduces wastewater containing FOG into the County wastewater collection system is required to install at minimum a 500 gallon Grease Interceptor. The Grease Interceptor must be located outside of the building served, and be accessible for servicing. Under certain circumstances, and after receiving approval by the Anne Arundel County Department of Public Works, businesses may be allowed to install approved interior Grease Recovery Units in place of Grease Interceptors. All Grease Interceptors are required to be installed and maintained in accordance with the Anne Arundel County Plumbing Code which adopts the 2015 International Plumbing Code. Physical inspections will be conducted at random to assess Grease Interceptors for solids, the depth of the grease caps, and volume of floating oils. If a Grease Interceptor has an oil and fat layer making up to 25% of the tank users will be required to have the interceptor pumped by a certified liquid waste hauler.

Users are required to maintain records of compliance with the County Plumbing Code for three years which can be made available on request by a County representative. Violators of discharge conditions will be charged with a civil citation for up to $1,000.00 per violation.

For tips on how to manage your FOG waste please print, laminate, and hang our “Best Management Practices for Food Service Wastewater” poster anywhere a drain is located and FOG may be introduced.

Common Areas Where FOG Can Enter the County Sewer System

  • Under 3 compartment sink
  • Mop sinks
  • Food prep sinks
  • Trench drains
  • Floor drains in the kitchen area
  • Pre-rinse stations or under counter dishwasher