Fats, Oils, & Grease Disposal

altWhat Causes Sewer Overflows?

A Sanitary Sewer Overflow (SSO) is the unintentional flow of untreated sewage onto the ground. SSOs create a health risk to the public, could damage property and could pollute our environment.

The bulk of the District's sewer backups and overflows are caused by the intrusion of roots into the pipes, or fats, oils and grease (FOG) being poured down the drain.

FOG can enter the sewer pipes when people pour FOG into kitchen sinks, and from poorly maintained grease traps in restaurants and other businesses. Fats, oils and grease stick to the insides of sewer laterals and sewer pipes. Over time, fats, oils and grease can build up and block the entire pipe, resulting in increased sewer rates and higher out-of-pocket expenses for customers, as well as posing a potential health hazard.


Fats, oils, and grease are commonly found in:

  • Meat fats
  • Food scraps
  • Baking goods
  • Lard
  • Butter and margarine
  • Sauces
  • Cooking oil
  • Shortening
  • Dairy products
  • Salad Dressings


What Can I Do To Help Prevent Overflows?

Be Sewer Smart. Here is a list of Do’s and Don’ts to keep the sewer pipes working properly.


altCollect grease in a container; let it solidify and dispose of it in the garbage. Used cooking oil can be recycled. For more information, call Greenwood County Recycling at 942-8567.

Place food scraps in the garbage.

Place a wastebasket in the bathroom to dispose of trash.

Plant trees away from sewer pipes.

Disconnect roof downspouts, sump pumps, and uncovered outdoor floor drains from sewer laterals.

Call GMD immediately if you see any Sewer Overflows.


Pour fats, oils and grease from cooking down the drain.

Use the sewer to dispose of food scraps.

Use the toilet as a wastebasket for trash.

Plant trees with shallow, spreading root systems near your sewer lateral.

Connect roof downspouts, sump pumps, and uncovered outdoor floor drains to your sewer lateral.

Let facial tissue, baby wipes, paper towels, feminine products, rags, diapers, wood, toys, plastic objects, gravel, grass cuttings, and other items go down the drain. These materials can cause sewer overflows and damage treatment plant’s machinery, causing breakdowns or loss of treatment efficiency.


How do I get my FREE Grease Fat Trapper and refill bags?

Stop by our office at 110 Metro Drive to get a grease collector and refill bags free of charge. Grease is the enemy to any sewer system. If each GMD customer puts just 1 tablespoon of grease in this container each week, that adds up to 55 gallons of grease NOT in our sewer system. You can make a difference!


Grease Control Regulations For Food Service Establishments