The World Health Organization (WHO) estimates that 2.6 billion people lack access to sanitation facilities, updated in 2008 with the lowest coverage in sub-Saharan Africa (37%), Asia (38%) and South-East Asia (45%) facilities, sanitary improvement as 1 the contact with human fecal material and cleaned by washing or toilet facilities, including toilets and pit/toilets.2 water even during the compost toilet with waste are far too often just drop into the sewers and streams in the absence of (expensive). Collection and treatment systems, as a result, surface water in many urban areas are heavily contaminated with human waste. In areas where there is a toilet hole that penetrates into the local groundwater is often a major problem because many communities rely on shallow wells and drinking water.
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