Grease Interceptors

Grease Interceptor Program

A circular hole in a concrete surface used for the installation of grease interceptors.
A circular hole in a concrete surface used for the installation of grease interceptors.

Never dump grease down the drain! Grease is a solid waste and goes in the trashcan!

In industrial facilities and restaurants, it’s crucial to understand the importance of responsible grease disposal. With large volumes of grease and oil produced daily, improper disposal can lead to both environmental and operational problems. By dumping grease down the drain, establishments risk severe plumbing blockages, which can disrupt operations and result in costly repairs.

However, the risks extend beyond the internal plumbing system. Improper disposal can also contribute to public sewer complications, raising environmental and public health concerns. Should a business be found breaching local or environmental grease disposal regulations, the repercussions can include hefty fines or even cessation of operations.

Given these factors, industrial facilities and restaurants must prioritize proper grease management, investing in appropriate equipment like grease traps or interceptors. Regular maintenance of these systems is essential for their effectiveness. Furthermore, employee education on proper disposal practices and instilling an ethos of environmental stewardship within the organization can significantly contribute to the prevention of irresponsible grease disposal.

See Picture Below: Typical Grease Trap that has not been properly maintained. This restaurant owner was fined $2400 for failure to comply with the Cumming Utilities Ordinance.

Basic Grease Interceptors (Traps) Sizing Requirements:

The City of Cumming Utilities Ordinance requires that all  food service establishments install and maintain a properly sized grease interceptor (trap). Each grease trap must be constructed to allow for 15 gallons per seat. For example, a food service establishment with 200 seats would be required to install at least: (200 seats) x (15 gallons per seat) x (24 Hours of Operation /12) x (1.0 Loading Factor) = 6000 gallon grease trap. In addition, no single grease trap shall be smaller than 1000 gallons or larger than 3,000 gallons. If more than 3,000 gallons of capacity is  required, multiple grease traps may be utilized.

Grease Interceptors and the Plan Review Process:

For plan review information and installation inspections, please contact Heath Martin at (770) 781-2020 or via email at

By going to the Cumming Utilities Ordinance page, you can find the Grease Interceptor sizing regulations and required maintenance frequency.

Assistance With Sizing and Maintenance Requirements:

For sizing requirements, maintenance inspections, enforcement issues, reporting a maintenance event, or questions about regulations governing Grease Interceptor Maintenance please call the Water Pollution Control Division Industrial Pretreatment Branch at (770) 781-2018 or Chase Sweat, Pretreatment Coordinator via email at:

Additional Resources