WASH

WASH (or WatSan, WaSH; stemming from the first letters of "water, sanitation and hygiene") is a sector in development cooperation, or within local governments, that provides water, sanitation, and hygiene services to communities. The main purposes of providing access to WASH services are to achieve public health gains, implement the human right to water and sanitation, reduce the burden of collecting drinking water for women, and improve education and health outcomes at schools and healthcare facilities. Access to WASH services is an important component of water security. Universal, affordable, and sustainable access to WASH is a key issue within international development, and is the focus of the first two targets of Sustainable Development Goal 6 (SDG 6). Targets 6.1 and 6.2 aim for equitable and accessible water and sanitation for all. In 2017, it was estimated that 2.3 billion people live without basic sanitation facilities, and 844 million people live without access to safe and clean drinking water. The acronym WASH is used widely by non-governmental organizations and aid agencies in developing countries.

The WASH-attributable burden of disease and injuries has been studied in depth. Typical diseases and conditions associated with a lack of WASH include diarrhea, malnutrition, and stunting, in addition to neglected tropical diseases. There are additional health risks for women, for example, during pregnancy and birth, or in connection with menstrual hygiene management. Chronic diarrhea can have long-term negative effects on children in terms of both physical and cognitive development. Still, collecting precise scientific evidence regarding health outcomes that result from improved access to WASH is difficult due to a range of complicating factors. Scholars suggest a need for longer-term studies of technological efficiency, greater analysis of sanitation interventions, and studies of the combined effects of multiple interventions to better analyze WASH health outcomes.