There are several types of nonflush toilets, based on the goals of water conservation or functioning when a water supply is not available. There are many primitive cabins without running water that need a method to deal with human toilet waste. Non-water-based toilets are also used with graywater systems to reduce, but not eliminate, the solids and bacteria load in the wastewater generated in the structure. The two most common nonflush toilets are discussed below.Composting toiletWaterless and forced-air composting toilets produce compost (which is still considered septage). Some models use a very small amount of water or a chemical foam
