Groundwater Pumping Regulations

To prevent land subsidence, when installing groundwater pumping facilities (wells), regulations such as structural standards and limits on pumping volume are enforced under the Tokyo Metropolitan Environmental Protection Ordinance, which ensures the health and safety of residents.
In addition, it is mandatory to report the amount of pumped groundwater once a year, including the already installed groundwater pumping facilities.

Installation of Groundwater Pumping Facilities (Wells)

Target Facility

All Pumping Facilities
Note: Only pumping facilities with a pump output exceeding 300 watts are eligible for single-family homes used solely for household purposes.

• Tokyo Metropolitan Bureau of Environment Website(External Link)

Structural Standards and Pumping Regulations

Exit opening cross-sectional area	Location of the Strainer	Pump Output	Upper limit of pumping volume
6 square centimeters or less	No restrictions	2.2 kilowatts or less	Average of 10 cubic meters per day and Up to 20 cubic meters per day
Exceeding 6 square centimeters 21 square centimeters or less	400 meters or deeper	No restrictions	No restrictions
Over 21 square centimeters	Installation not possible

Time of Notification

Please submit the installation notification at least 30 days before the start of construction.

• Note: Please contact the Living Environment Division, Environmental Conservation Section in advance when you come to submit your notification.
• Note: A copy of the notification form will generally be returned at a later date. If it is difficult for you to come to the office for the return, it will be sent by mail, so if you wish to have it mailed back, please attach a self-addressed envelope with the necessary postage when submitting the notification.
• Note: Regarding various notification documents, due to the abolition of seals, please make corrections with double lines, etc., in case of any errors in the content.

Documents Required for Notification

• Form No. 36 Notification of Installation (Change) of Groundwater Pumping Facility
• Local Guide Map
• Layout Map
• Well Structure Diagram
• Water Supply System Diagram
• Catalog of Pumping Machines, Flow Meters, and Water Level Gauges
• Geological Column Diagram (Post-Drilling Submission)
• Pumping Test Report (Submitted After Well Drilling)

Number of Copies Submitted

One original and one copy (including attached documents)

Change or Abolition of Groundwater Pumping Facilities (Wells)

Please notify us when changing or abolishing the pumping facility, or when there are changes to the owner's name, address, etc.

• Change of Pumping Facility: Please submit the application for the installation or modification of groundwater pumping facilities (Form No. 36) in accordance with the installation of pumping facilities.
• Abolition of Pumping Facilities: Well Abandonment Report
• Change of Well Owner's Name, etc.: Name Change Report

Groundwater Pumping Volume Report

Pump facility operators should understand the groundwater pumping volume from the previous year and report it once a year.

Target Facility

All Pumping Facilities
Note: For pumping facilities installed after July 2016, only those used for household purposes in single-family homes with a pump output exceeding 300 watts are eligible.

Reporting Period

From January 1 to December 31 of the previous year

Report Details

Monthly groundwater extraction volume, breakdown by usage, etc.

Submitted Documents

Groundwater Pumping Volume Report (Form No. 18)

Submission Period

By the end of January every year

Number of Copies Submitted

Part 2

Form

• Form No. 36 Notification of Installation (Change) of Groundwater Pumping Facility (Word 32.5KB)
• Attachment (Word 45.0KB)
• Well Abandonment Report (Word 31.0KB)
• Name Change Report (Word 31.5KB)
• Form No. 18 Groundwater Pumping Volume Report (Word 38.0KB)
• Groundwater Pumping Record (Word 90.5KB)

Example

• Example of Description (Notification of Installation of Groundwater Pumping Facility) (Word 62.5KB)