Reliable sources of clean water and sanitation facilities are necessary for sustainable development, but more than 2 billion people worldwide lack access to safe drinking water, sanitation, and hygiene. Polluted water and sanitation are associated with the spread of illnesses including diarrhea, typhoid fever, and cholera. Inadequate access to clean water and sanitation facilities also hinders efforts to eradicate preventable diseases worldwide.
While much of the world has gained access to improved sanitation and drinking water sources, worldwide accomplishments are said to have concealed regional inequalities. The WHO/UNICEF Joint Monitoring Program for Water Supply and Sanitation (JMP) estimates that 884 million people lack access to improved drinking water sources, most of them located in sub-Saharan Africa and Oceania.
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