For inquiries regarding water supply, please contact the Water Works Bureau Customer Service Center.
Water Works Bureau Customer Service Center
Phone: 045-847-6262 Fax: 045-848-4281
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Water Distribution System
Last update date April 1, 2024
Yokohama City is a hilly area with a lot of undulations, 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 uses a water distribution block system divided into 25 water supply areas (water distribution blocks) in the city.
Water distribution block system
Each distribution block has one distribution reservoir and pumping station. In addition, in order to use energy efficiently, the water supply area is divided into a natural flow area (low ward) and a pump-based area (high ward). As a result, even in the event of an accident such as a power outage or a water pipe rupture occurs, the range of effects such as water cutoff can be minimized and restored as soon as possible.
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 cutoff.
Water distribution block system
| Administrative district | Major water purification plants |
|---|---|
| Tsurumi | Nishiya, Kojaku, Corporate Sagamihara, Corporate Corporation Nishi Nagasawa |
| Kanagawa | Nishiya, Kawai, Corporate Sagamihara, Corporate Corporation Nishi-Nagasawa |
| West | Nishiya, Corporate Corporation Sagamihara |
| Medium | Nishiya, Corporate Corporation Sagamihara |
| South | Nishiya, Corporate Corporation Sagamihara |
| Konan | Nishiya, Kojaku, Corporate Corporation Sagamihara, Corporate Corporation Ayase |
| Hodogaya | Nishiya, Kawai, Corporate Corporation Sagamihara |
| Asahi | Kawai, Nishiya, Kojaku, Corporate Corporation Sagamihara |
| Isogo | Nishiya, Kojaku, Corporate Corporation Sagamihara, Corporate Corporation Ayase |
| Kanazawa | Kojaku Corporation Ayase |
| Kohoku | Kawai, Kojaku, Corporate Corporation Nishi-Nagasawa |
| Green | Kawai, Corporate Sagamihara, Corporate Corporation Nishi-Nagasawa |
| Green leaves | Kawai, Corporate Sagamihara, Corporate Corporation Nishi-Nagasawa |
| Tsuzuki | Kawai, Kojaku, Sagamihara, Corporate Corporation, Nishi-Nagasawa |
| Tozuka | Kojaku, Corporate Corporation Sagamihara, Kawai |
| Sakae | Kojaku Corporation Ayase |
| Spring | Kawai, Kojaku, Corporate Corporation Sagamihara |
| Seya | Kawai, Kojaku, Corporate Corporation Sagamihara |
Remarks 1: Corporate Association…Wide Area Water Supply Corporation in Kanagawa Prefecture
For inquiries to this page
Water Works Bureau Water Distribution Division
Phone: 045-671-3064
Phone: 045-671-3064
Fax: 045-212-1167
Email address: su-haisui@city.yokohama.jp
Page ID: 208-796-015
