APPSANI (Association for Sanitation Contractors), is a local organisation comprising over 2000 members whose mission is to provide affordable sanitation facilities in Indonesia through partnership with the local government to promote sanitation among the poor. Its aim is to install rudimentary toilet systems in individual homes where proper plumbing doesn’t exist, by creating a simple pipe flow from the indoor toilet to two septic tanks dug in the ground outside. Both liquid and solid waste are contained in these tanks, and enzymes are added to purge the stench and toxicity. Over time, the waste decomposes, removing the need to dispose of it in the future. This prevents the contamination of well water which the villagers drink from, and thus prevents waterborne illnesses.