Ministry of Health, Labour and Welfare Ministry of Land, Infrastructure, Transport, and Tourism Ministry of the Environment Ministry of Internal Affairs and Communications improved water source
Responsibility for the water and sanitation sector is shared between the Ministry of Health, Labour and Welfare, in charge of water supply for domestic use; the Ministry of Land, Infrastructure, Transport, and Tourism, in charge of water resources development as well as sanitation; the Ministry of the Environment, in charge of ambient water quality and environmental preservation; and the Ministry of Internal Affairs and Communications, in charge of performance benchmarking of utilities. Access to an improved water source is universal in Japan. About 98% of the population receives piped water supply from public utilities.
