Fats, Oils and Grease Program

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Fats, Oil, and Grease Program

As mandated by the rules and regulations of the U.S. EPA  the Arizona Department of Environmental Quality (ADEQ) and the city of Buckeye through its Industrial Pretreatment Program (IPP) is required to prevent commercial and industrial sources of pollution discharge into the sanitary sewer system and eventually the wastewater treatment facilities. The FOG Program is a component of the comprehensive IPP designed to deal specifically with Fats, Oils and Grease. The FOG Program prohibits the discharge of fats, oils, and grease down the drain in excessive amounts which accumulates in sewer pipes and over time, can build up and restrict flow in the pipe contributing to:

  • Untreated wastewater to back up into your business or home, and possible overflowing of manholes into the street, known as Sanitary Sewer Overflows (SSO’s). These are a serious public health hazard.
  • Public relations challenges due to odor problems from hydrogen sulfide gas accumulation. Usually associated with a rotten egg odor.
  • Major increases in cost for repetitive maintenance, repair and premature replacement of sewer lines and equipment related to lift stations and the waste water plants.

pipeFog - Source & Control

FOG wastes are typically generated at Food Service Establishments (FSE’s) as byproducts from food preparation. Whether originating from an FSE, a business performing vehicle and equipment maintenance, or some other source, any FOG reaching the sanitary sewer system can cause a variety of problems. The FOG Program is designed to identify, control and enforce oil and grease discharges and to provide educational information to non-domestic users using the following key objectives:

  • Requiring the installation of grease traps/interceptors for non-domestic facilities based off their potential for generating FOG.
  • Verification of properly maintained grease control devices through inspections and follow up.
  • Educate FSE’s, commercial and industrial facilities on Best Management Practices.

pipe with fat oil and greaseGrease Control Devices (GCD)

A GCD is a term used for any conventional grease interceptor, grease trap, grease removal device or alternative technology used to separate oil and grease from wastewater.

Grease Interceptor

A grease interceptor is a control device that operates by gravity designed to separate and hold fats, oils, greases and solids while allowing the wastewater to flow through and exit the device. They are typically large tanks installed outside and in-ground and cleaned by pumping out the tank completely.

Note: Buckeye Code 16-6-2 requires grease interceptors shall be provided when in the opinion of the Water Resources Department, they are necessary for the proper handling of liquid wastes containing grease in excessive amounts or any flammable wastes, sand and other harmful ingredients. At minimum, grease traps must be cleaned monthly or as deemed necessary by the city.

Grease Trap

grease trap is a small grease control device with manual grease removal, typically installed inside and above ground, generally cleaned by restaurant staff. Daily visual inspections of the device will dictate if weekly or even daily cleaning is required.


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