Technical standards and guidelines

Last update date April 1, 2024

"Standards for Creating Water Works Completion" has been revised. (September 2023)

Water supply construction management standards
Name		Revisions	Old Criteria
Water Works Construction Management Standards (March 2021 Edition) (PDF: 729KB)		Major Revisions (March 2021) (PDF: 181KB)	Refer to “Past Water Works Construction Guidelines and Revision Points” at the bottom of this page.

Standard for drawing completion of water supply work
Name	Revisions	Old Criteria
Standard (September 2023 version) of water supply construction completion map (PDF: 2,051KB)	New and old comparison table (PDF: 161KB)	September 2022 edition (PDF: 1,934KB)

Water Works and other related styles
Contents	Download
Yokohama City Civil Engineering Common Specifications (Collection of Styles) ※registration form and construction completed registration form	Move to the collection of styles
Construction monthly report	word (word: 27KB)
Stage Confirmation Form	word (word: 25KB)
Notification of work on holidays, nighttime, etc.	word (word: 24KB)
Receipts and Borrowed	word (word: 24KB)
Letters	word (word: 23KB)
Payments Clearing Statement	word (word: 24KB)

Water Works document preparation guidelines
Name				Revisions	Old Criteria
Water supply construction documents preparation guidelines (April 2024 version) (PDF: 918KB)				New and old comparison table (PDF: 2,583KB)	March 2023 edition (PDF: 977KB)

Past water supply construction procedures and revised points
Annual version	Download (water supply construction guidelines)	Downloads (Main Revisions, etc.)
May 2018 version	Water supply construction guidelines (May 2018 version) (PDF: 9,734KB)	List of Major Revisions (May 2018 Version) (PDF: 412KB)
October 2018 version	Water supply construction guidelines (October 2018 version) (PDF: 12,710KB)	List of Major Revisions (October 2018 Version) (PDF: 1,612KB)
January 2019 version	Water supply construction guidelines (January 2019 version) (PDF: 12,525KB)	List of Major Revisions (January 2019 Edition) (PDF: 4,991KB)
May 2019 version	Water supply construction guidelines (May 2019 version) (PDF: 162KB)	List of Major Revisions (May 2019 Edition) (PDF: 46KB)
October 2019 version	Water supply construction guidelines (October 2019 version) (PDF: 9,930KB)	List of Major Revisions (October 2019 edition) (PDF: 346KB)
January 2020 edition	Water Works Construction Guidelines (January 2020 Version) (PDF: 10,124KB)	List of Major Revisions (January 2020 Edition) (PDF: 2,647KB)
July 2020 version	Water Works Construction Guidelines (July 2020 Version) (PDF: 6,921KB)	List of Major Revisions (July 2020 Edition) (PDF: 14,902KB)
October 2020 edition	Water Works Construction Guidelines (October 2020 version) (PDF: 2,621KB)	List of Major Revisions (October 2020 Edition) (PDF: 772KB)

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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