Fecal Sewage Treatment Services is the slurry that contains both solid and liquid waste that accumulates in onsite sanitation systems (OSS) e.g. septic tanks. It is raw or partially digested slurry that results from the collection, storage or treatment of combinations of excreta and blackwater, with or without greywater. This has three main components – scum, effluent and sludge. It has an invasive odour, appearance and contains significant levels of grease, grit, hair, debris and pathogenic micro-organisms. In the current scenario, the construction and management of OSS are left mainly to ineffective local practices and there is lack of holistic septage management practices.

Faecal sludge management involves collection, treatment and proper disposal/ reuse. Effective faecal sludge management comprise safe disposal of the treated septage.