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
※Please be careful not to make a mistake.
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Last Updated March 29, 2024
Established in January 2005 by the Japan Water Works Association (Public Corporation), which is made up of water supply business related organizations nationwide, with the aim of improving management efficiency, ensuring transparency in business management, and improving the service level of the Japanese water supply business. It is a standard applied to water utilities nationwide. It was revised in March 2016.
Business indicators based on water supply business guidelines (FY2022 version) (PDF: 974KB)
Water Works Bureau Customer Service Center
Phone: 045-847-6262 Fax: 045-848-4281
※Please be careful not to make a mistake.
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Water Works Bureau, Corporate Planning Division
Phone: 045-671-3127
Phone: 045-671-3127
Fax: 045-212-1157
Email address: su-keieikikaku@city.yokohama.jp
Page ID: 465-441-122