For inquiries regarding water supply, please contact the Water Works Bureau Customer Service Center.
Water Works Bureau Customer Service Center
Telephone: 045-847-6262 Fax: 045-848-4281
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Mechanism of water distribution
Last update date April 1, 2024
In Yokohama City, the entire city area is a hilly area with a lot of undulating, and at the same time there are many low altitude areas such as landfills, so it is difficult to send water to the entire city at a certain pressure.
For this reason, City of Yokohama, Water Works Bureau supplies water through a distribution block system divided into 25 water supply areas (water distribution blocks) in the city.
Distribution block system
Each distribution block has a distribution reservoir and a pumping station. In addition, in order to use energy efficiently, the water supply area is divided into a natural flow system area (low ward) and a pump system area (high ward) to supply water. . As a result, even in the event of an accident such as a power outage or water pipe rupture, the range of effects such as water outage can be minimized and restored early.
Furthermore, by connecting the water distribution blocks with a large diameter water pipe, we are strengthening our support system so that tap water can be sent from the adjacent water distribution block in the event of an accident such as water outage.
Distribution block system
| Administrative Districts | Main water treatment plants |
|---|---|
| Tsurumi | Nishiya, Kojaku, Corporate Company Sagamihara, Corporate Company Nishi Nagasawa |
| Kanagawa | Nishiya, Kawai, corporate group Sagamihara, corporate group Nishi-Nagasawa |
| West | Nishiya Corporation Sagamihara |
| Medium | Nishiya Corporation Sagamihara |
| South | Nishiya Corporation Sagamihara |
| Konan | Nishiya, Kojaku, Corporate Company Sagamihara, Corporate Company Ayase |
| Hodogaya | Nishiya, Kawai, Corporate Corporation Sagamihara |
| Asahi | Kawai, Nishiya, Kojaku, Corporation Sagamihara |
| Isogo | Nishiya, Kojaku, Corporate Company Sagamihara, Corporate Company Ayase |
| Kanazawa | Ayase, Kojaku Corporation |
| Kohoku | Kawai, Kojaku, and Nishi-Nagasawa |
| Green | Kawai Corporation Sagamihara Corporation Nishi-Nagasawa |
| Green leaves | Kawai Corporation Sagamihara Corporation Nishi-Nagasawa |
| Tsuzuki | Kawai, Kojaku, Corporate Company Sagamihara, Corporate Company Nishi Nagasawa |
| Tozuka | Kojaku Corporation Sagamihara / Kawai |
| Sakae | Ayase, Kojaku Corporation |
| Spring | Kawai, Kojaku, Corporation Sagamihara |
| Seya | Kawai, Kojaku, Corporation Sagamihara |
Remarks 1:…Kanagawa Prefecture Wide Area Water Supply Corporation
Inquiries to this page
Distribution Division, Water Works Bureau Distribution Department
Telephone: 045-671-3064
Telephone: 045-671-3064
Fax: 045-212-1167
Email address: su-haisui@city.yokohama.lg.jp
Page ID: 208-796-015
