Technical Standards and Guidelines

Last Updated August 20, 2024

"Waterworks Construction Documents Preparation Guidelines" have been revised. (June 2024)

Water supply construction management standards
Name		Revisions	Old standards
Water supply construction management standards (March 2021 version) (PDF: 729KB)		Major revised points (March 2021) (PDF: 181KB)	Please refer to "Past Water Works Construction Guidelines and Revision Points" at the bottom of this page.

Standard for drawing of completed waterworks
Name	Revisions	Old standards
Standard of water supply construction completion figure making (September, 2023 version) (PDF: 1,824KB)	New and old comparison table (PDF: 161KB)	September 2022 version (PDF: 1,934KB)

Water supply works related styles
Contents	Download
Common Specifications (Collection of Styles) ※Construction started in registration form, completed in registration form, etc.	Move to a collection of styles
Construction Monthly Report	Word (word: 27KB)
Stage confirmation	Word (word: 25KB)
Notification of work on holidays, nighttime, etc. of government offices	Word (word: 24KB)
Receipts and Loans	Word (word: 24KB)
Confirmation	Word (word: 23KB)
Payments Clearing Letter	Word (word: 24KB)

Water supply construction documents preparation guidelines
Name				Revisions	Old standards
Water supply construction documents making point (June, 2024 version) (PDF: 918KB)				New and old comparison table (PDF: 103KB)	April 2024 version (PDF: 918KB)

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

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
※Please be careful not to make a mistake.

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