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Preparing for drinking water at home and at work

Final update date March 1, 2021

"Water" is the most important thing to maintain human life. The Great East Japan Earthquake that occurred on March 11, 2011 caused enormous damage to various places, mainly in the Tohoku region, and the number of cut-off units reached about 2.57 million. It became clear again.
In Water Works Bureau City regularly asks homes and companies to store and store 3 liters of drinking water per person and 9 liters of drinking water for 3 days in preparation for a disaster.
When storing, pay attention to the following points.
(* In high-rise houses that are pressurized by a water supply pump or through a receiving tank, water may not come out if the building is out of power.)
<How to store water and notes>

  • Put water into the mouth in a clean and lid-shaped plastic container and keep it full.
  • Boiling or passing through a water purifier may cause the effect of chlorine, so store the tap water as it is in a container.
  • Store in a cool place like a refrigerator that is not exposed to direct sunlight. (It can be stored for about one week in winter and about three days in summer.) ※Please change the water around this period.
  • The standard of stockpiling is 3 liters per person for drinking water and 9 liters for 3 days.

Stockpiling wisely (rolling stock method)

The rolling stock method is a method of always stocking a certain amount by buying a little more drinking water and buying a new amount of water used.

Rolling Stock Image

Image 2 of the Rolling Stock Method


※This video was produced in cooperation with Iwasaki Gakuen Yokohama Digital Arts College.

Stockpiled drinking water "Yokohama Water Can"

Orders for the stockpiled drinking water "Yokohama Water Can" have been closed on Sunday, February 28, 2021.

For inquiries about water supply, please contact 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.

Inquiries to this page

Water Works Bureau General Affairs Division, General Affairs Department

Telephone: 045-671-3105

Telephone: 045-671-3105

Fax: 045-212-1155

Email address: [email protected]

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Page ID: 767-268-5922

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