It is a problem! Fats, oils and greases (FOG) do not mix with water (insoluble) and have a tendency to separate from a liquid solution. When fats, oils and greases are poured down the drain, they stick to the sewer pipe walls creating layers of buildup that restrict the wastewater flow. This problem requires pipes to be cleaned more frequently, causes pipes to be replaced sooner than expected, and causes blockages that can result in sewer overflows.

Fat, oils and greases, when liquid, may appear to be harmless since it flows easily down the drain. However, as the liquid cools, the FOG hardens and sticks to the insides of pipes. FOG can partially or completely block wastewater flow, causing backups or overflows.

Fats, oils and greases are natural by-products of the cooking and food preparation process. Common sources include food scraps, meat fats, cooking oils, lard, baked goods, salad dressings, sauces, marinades, dairy products, shortening, butter and margarine, coffee grinds, eggshells, grain, rice, seeds, etc. Anything put through the garbage disposal adds to the buildup rapidly.

Fats, oils and greases are natural by-products of the cooking and food preparation process. Common sources include food scraps, meat fats, cooking oils, lard, baked goods, salad dressing, butter and margarine, coffee grinds, eggshells, grain, rice, seeds, etc. Anything put through the garbage disposal adds to the buildup.

Everyone plays a role in preventing FOG from damaging our sewer system. The following easy tips can help prevent a sewer overflow in your home or neighborhood.

Fat, oil, grease and grit should never be poured down the sink. Sink drains and garbage disposals are not designed to properly handle these materials.

1. Before washing, scrape and dry wipe pots, pans and dishes with paper towels and dispose of materials in the trash.
2. Pour fat, oil, grease and grit into a disposable container, such as an empty glass jar or coffee can. Once the liquid has cooled and solidified, secure the lid and place the container in the trash.
3. Disconnect, or at least minimize use of the garbage disposal to get rid of food scraps. The garbage disposal chops up food into small pieces, but can still cause a blockage in the pipe. Use sink strainers to catch food items, then empty the strainer into the trash.

Sewer system maintenance in neighborhoods that experience sewer blockages and backups due to fat, oil, grease and grit is expensive and can contribute to the amount that customers pay for sewer service. A sewer blockage or backup can also result in expensive repairs to the home.

If you experience a sewer blockage or overflow, call the City of Manteca at (209) 456-8470, 24 hours a day.