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Grease Interceptors...what are they?

Grease interceptor means an interceptor whose rated flow exceeds 50gpm or has a minimum storage capacity of 750 gallons or more and is a device located underground and outside of a facility. It is designed to collect, contain or remove food wastes or grease from the wastewater while allowing the balance of the liquid waste to discharge to the wastewater collection system by gravity.

If the grease is not removed periodically the grease will work itself into the sewer system. Once grease enters the drain lines, it will clog and cause failure and a possible overflow.


Grease Interceptor


Many people ask “What’s the difference between a Grease Trap and a Grease Interceptor”. Technically they perform the same job filtering the F.O.G from the water that is washed into the sewer system the only real difference is the size and location. Usually Grease Traps are fitted to the plumbing inside a food service facility and they catch the F.O.G as it flows through the pipes. Most Grease Traps need to be cleaned weekly by removing the “lid”, skimming the grease off the top and scooping the solids from the bottom. Grease Interceptors, on the other hand, are located outside the facility a few feet under the ground and are very large. All of the water wastes that come from the kitchen pass through the interceptor before flowing into the city sewer system. Grease Interceptors are more efficient than Grease Traps and require monthly inspection and periodic cleaning. Grease Interceptors may be accessed from manhole covers located above ground usually a few feet from the building.



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