Master Plumber Practice Exam 2025 - Free Plumber Practice Questions and Study Guide

Grease traps are essential for trapping grease, fats, and oils from wastewater before they enter the sewage system. To maintain their efficiency and prevent clogs and backups, regular maintenance is crucial. The recommendation of emptying grease traps every 30 to 90 days, depending on usage, is based on several factors, including the size of the trap, the volume of wastewater generated, and the type of food waste being processed.

Restaurants and commercial kitchens that produce higher volumes of greasy waste will require more frequent servicing, possibly on the shorter end of that range. In contrast, establishments with lower usage might find that 90 days is sufficient. This flexible approach allows the grease traps to function optimally, preventing the overflow and ensuring that they effectively separate and contain the grease before it causes plumbing issues. The other intervals listed would not typically account for the varying demands placed on the grease trap. For example, servicing every week could be excessive and unnecessary for smaller operations, while annual or semi-annual options might lead to the build-up of waste and reduced efficiency.