What is septage?

Septage is defined as domestic wastewater that has been collected from various sources, specifically from septic tanks, holding tanks, or portable toilets. This material typically consists of a mix of water, solids, and dissolved organic matter, and is transported by truck to treatment facilities for further processing. Its composition can vary greatly depending on the source and the treatment history of the wastewater, making it different from other types of waste like industrial waste or sludge from treatment plants.

Recognizing septage is important in the context of wastewater treatment, as it requires specific handling and treatment processes. For treatment facilities, understanding the nature of septage—its organic load, nutrient content, and potential pathogens—is crucial in designing effective treatment strategies. This is distinct from wastewater that is processed at the final stages in treatment plants or waste produced through industrial processes, both of which follow different management and treatment protocols.