What is the primary purpose of a grease trap in an onsite wastewater system?

The primary purpose of a grease trap in an onsite wastewater system is to separate grease from wastewater. Grease traps are designed to capture and hold fats, oils, and grease (FOG) before they enter the main sewage system. When wastewater flows through the trap, the lighter grease rises to the top, where it can be collected and removed, while the remaining wastewater can continue through the sewer system. This separation is crucial for preventing clogs in pipes and ensuring that wastewater treatment facilities can operate effectively, as excessive grease can hinder treatment processes and lead to operational issues.

Understanding this function underscores the importance of maintaining a properly functioning grease trap to prevent costly repairs and maintenance in plumbing and treatment systems.