Fats, Oils, and Grease (FOG) Program

Fats, oil and grease, collectively known as FOG, are found in most residential and commercial kitchens. The discharge of FOG to sanitary sewer systems is a problem because the FOG can accumulate in the sewer and cause a backup or overflow. 

If this happens, there could be severe consequences that include:

  • Public health endangerment
  • Damage to your home or business
  • Damage to our creeks, streams, and ponds
  • Aquatic life endangerment
  • Damage to the sanitary sewer system
  • Fines or citations

The City of Southlake's FOG program was established by Ordinance 914, to ensure protection of the public health, the environment and to prevent damage to the City's public sewer system. The FOG Policy Manual was established to control all aspects of the program. 

Liquid Waste Hauling Information

Any vehicle transporting liquid waste within the City of Southlake must complete a permit application. If you are a liquid waste hauling company, read our How-To document under the Helpful Links section explaining the permitting process. Then click here to begin your permit application.

If you are a food service establishment looking to hire a liquid waste hauling company, please view the most recent list of permitted liquid waste haulers in our Helpful Links section. 


What can you do to help reduce FOG waste?

Train your staff. 

Trapping oils and grease with paper towels and disposing of them properly can go a long way. Before washing or rinsing pots or dishes, wipe off cooking oil, salad dressing and sauces using paper towels and discard in designated waste containers.

Throw away solid foods before placing dishes in a sink or dishwasher. Other solids, like coffee grounds and tea leaves, should also go in the trash rather than down the drain.

Strain the drain. This will prevent any solids from being washed down the drain.

Keep a clean, FOG-free kitchen

Regularly maintained kitchen equipment prevents build up FOG. Remove all solid grease build-ups from processing equipment exhaust systems by scraping waste into a container for disposal. Pour oily and greasy water used to clean fixtures down a drain equipped with a grease trap and not into an outdoor drain. Outdoor drains flow directly to the river without treatment. Connect floor drains to an oil and grease trap. Make sure to dispose of any cleaning products according to instructions found on the bottles.

Clean grease traps regularly

The City of Southlake requires for grease traps to be cleaned at least every 90 days. Based on the flow of grease, many food establishment require a more frequent clean up. An easy way of knowing when to clean out the grease trap is when the percentage of total occupancy is 25% of the trap. 

Check out the link in Helpful Information for some additional FOG Best Practices to help reduce the waste.