\r\nIn Target 10 of Goal 7 of Millennium Development Goal, "access" to an improved water source mean?
Availability of at least 20L water / person/ day from a source within 1 km of dwelling Availability of at least 20L water / person/ day from a source within 1.5 km of dwelling Availability of at least 15L water / person/ day from a source within 1 km of dwelling Availability of at least 15L water / person/ day from a source within 1.5 km of dwelling