what is FOG

‘Fat, Oils and Grease’ (FOG) is a term commonly used to define the lipid rich material generated predominantly during cooking and food processing.

While the direct release of FOG into the collection system is considered illegal by most municipalities, when hot, liquid FOG passes easily into the sewers – during the cleaning process for instance.

THE TIP OF THE FATBERG

When it cools, FOG congeals and solidifies, accumulating on pipe walls and potentially forming hardened deposits through a chemical reaction or a physical aggregation process. These deposits, fatbergs, lead to a reduction in conveyance capacity and ultimately to sanitary sewer overflows that cost Water Utilities globally hundreds of millions of pounds each year in cleaning, repairing, and maintenance fees.