Annually, nearly half a million tonnes of grease and fat infiltrate the UK sewerage system. Grease adheres to pipe walls, posing a risk of blockages, while fats and oils can damage wastewater treatment equipment, resulting in costly repairs for municipalities each year. If FOG is released into natural watercourses, it can cause significant environmental harm.

To address these concerns, legislation now vigorously enforces proper FOG management by food service operators. Failure to comply can result in substantial fines or even closure.