In 2017, 45% of the global population (3.4 billion people) used a safely managed sanitation service.
31% of the global population (2.4 billion people) used private sanitation facilities connected to sewers from which wastewater was treated.
14% of the global population (1.0 billion people) used toilets or latrines where excreta were disposed of in situ.
74% of the world’s population (5.5 billion people) used at least a basic sanitation service.
2.0 billion people still do not have basic sanitation facilities such as toilets or latrines.
Of these, 673 million still defecate in the open, for example in street gutters, behind bushes or into open bodies of water.
At least 10% of the world’s population is thought to consume food irrigated by wastewater.
Cropland in peri-urban areas irrigated by mostly untreated urban wastewater is estimated to be approximately 36 million hectares (equivalent to the size of Germany)
Poor sanitation is linked to transmission of diseases such as cholera, diarrhoea, dysentery, hepatitis A, typhoid and polio and exacerbates stunting.
Poor sanitation reduces human well-being, social and economic development due to impacts such as anxiety, risk of sexual assault, and lost educational opportunities.
Inadequate sanitation is estimated to cause 432 000 diarrhoeal deaths annually and is a major factor in several neglected tropical diseases, including intestinal worms, schistosomiasis, and trachoma. Poor sanitation also contributes to malnutrition.
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