New water distribution pipes are typically made from ductile iron and service pipes from stainless steel and the change in pipe materials is credited as a major factor in reducing water losses to one of the world's lowest levels.
Water supply and sanitation in Japan is characterized by numerous achievements and some challenges. New water distribution pipes are typically made from ductile iron and service pipes from stainless steel. The change in pipe materials is credited as a major factor in reducing water losses to one of the world's lowest levels. 
