The sewer system consists of pipes (called sewer mains and laterals) and lift stations, that pump sewage to Norm Wood Environmental Centre, the City's wastewater treatment plant.
When FOG are poured down drains, sinks and toilets they cool, harden and slowly start to accumulate on the inner walls of sewer pipes. FOG does not mix with water, and over time the grease layer starts to grow and can completely plug the pipe. FOG also plugs pumps at the lift stations and wastewater treatment plant, directly impacting the quality of water that goes into the Ocean.
Accumulation can happen anywhere in the sewer system, including your house! It's better to prevent FOG from entering the sewer system and avoid sewage spills, back-ups and flooding.