What is defined as 'septage' in the context of sewage systems?

Septage refers to a specific mixture found within septic systems, primarily composed of solid wastes, scum, sludge, and liquids. This definition stems from the comprehensive understanding of how septic tanks function. When wastewater flows into a septic tank, it undergoes a process of separation. Heavier solids settle to the bottom, forming sludge, while lighter materials rise to the surface and create scum. The liquid effluent that remains in the middle is a combination of these phases, and collectively, they make up what is termed septage.

Understanding this definition is crucial because it highlights the importance of proper handling and treatment of septage in sewage systems. Septage is often pumped out during routine maintenance and must be treated appropriately at dedicated facilities to prevent environmental contamination and ensure public health safety. Proper knowledge of what septage consists of is essential for septic installers, as it informs best practices in maintaining and servicing septic systems.