Water source of Yokohama is 5 systems of the Doshi River, Sagamiko, Banyu River, company group Sakawa River, company group Sagami River.
After cleaning in method of water purification called rapid filtration method (in Kawai film filtration method) at water purification plant of three city of Kawai, Nishiya, willow tit and four water purification plant of wide area Channel company corps (※) in Kanagawa, and performing water quality test, and having confirmed security, water of these 5 systems is saved in distributing reservoir of 22 city. We send from there to house of everybody with water pipe.
Water source of Yokohama-shi
|The name||Daily water intake quantity||What water is it?||Where do you go?|
|The Doshi River system||172,800 cubic meters||Water of the Doshi River||To Kawai water purification plant|
|Sagamiko system||394,000 cubic meters||Water which we saved in Sagamiko||To Nishiya water purification plant|
|Banyu River system||284,700 cubic meters||Water which had enough being Lake Tsukui mainly||To willow tit water purification plant|
|Company group Sakawa River system||605,200 cubic meters||Water which had enough being Lake Tanzawa mainly||To water purification plant of wide area Channel company group (※) in Kanagawa|
|Company group Sagami River system||499,000 cubic meters||Water which had enough being Lake Miyagase mainly||To water purification plant and willow tit water purification plant of wide area Channel company group in Kanagawa|
(※) Yokohama-shi, Kawasaki-shi, Yokosuka-shi, Kanagawa is public, and wide area Channel company group in Kanagawa invests and it produces tap water and sells to investment 4 group.