If you're planning a new restaurant, it's important that your kitchen has a grease trap. Also called a grease interceptor, this device holds wastewater so that cooking grease and fats cool for easy removal, helping you avoid clogged sewers and drains. Here's what you should know about this essential component.

FAQ About Grease Traps

Do I need one?

In Alaska, all commercial locations that prepare food and beverages must have a grease interceptor installed. Depending on the type of establishment, there are size and model requirements that need to be connected to all sinks and drains to comply with the law. Ask your local zoning department to help you determine what your restaurant needs.

What happens if it isn’t maintained?

clogged sewers

Ignoring the cooled grease leads to clogged sewers and drains, which can cause backups in the kitchen. Plumbing malfunctions will interfere with your daily operations and create unpleasant smells throughout the dining area.

Grease trap backups are also dangerous. If the wastewater floods back into your kitchen through the floor drains, the ground will be slick with oils and grease, creating a slip risk.

How often should the grease trap be cleaned?

The trap should be cleaned when the grease and food buildup is near 25% full, which is usually between one and three months. The rate it fills depends on how busy your establishment is and how well food is scraped off the dishes before it reaches the drain. If the level gets too high, the interceptor will malfunction, putting you at risk for clogged sewers and plumbing problems.

Who cleans it?

While you can attempt to scoop out the cooled grease yourself, leaving the tasks to a plumbing or sewer company will ensure the buildup is removed safely and thoroughly. These professionals know how to carefully remove the lid to avoid damaging the gaskets and other small components. They also have the right equipment and gear to protect themselves as they handle the waste and odors.


If you want help caring for your new establishment's grease trap, turn to Alaska Sewer & Drain LLC, in Anchorage. These professionals have provided reliable commercial plumbing services to restaurant owners across the state since 1995. They're also available 24/7, ensuring you'll always have the support you need so that operations aren't inhibited. Get more information about their services online, or call (907) 248-9557 to schedule an appointment.