Note: WHO defines reasonable access to safe drinking water in an urban area as access to piped water or a public standpipe within 200 meters of a dwelling or housing unit. Safe drinking water includes treated surface water and untreated water from protected springs, boreholes, and sanitary wells. Urban areas with access to sanitation services are defined as urban populations served by connections to public sewers or household systems such as latrines, pour-flush latrines, septic tanks, communal toilets, and other such facilities. Definitions of safe water and appropriate access to sanitation and health services vary depending upon location and condition of local resources. Application of these definitions may vary, and comparisons can therefore be misleading.