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A composting toilet is a type of dry toilet that treats human excreta by a biological process called composting. This process leads to the decomposition of organic matter and turns human excreta into compost-like material but does not destroy all pathogens. Composting is carried out by microorganisms (mainly bacteria and fungi) under controlled aerobic conditions most composting toilets use no water for flushing and are therefore called dry toilets.
Grey-water reed bed system; A reed bed is essentially a basin that is lined with an impermeable membrane, filled with gravel and planted with reeds and rushes or other high nutrient uptake plants