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Preparation of drinking water at home and at work

Last Updated January 16, 2024

"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 water cut-offs reached about 2.57 million. Was revealed again.
In preparation for the occurrence of a disaster, Water Works Bureau regularly asks homes and businesses to store and store 9 liters of drinking water for 3 days and 3 days per person.
※In high-rise houses that are pressurized with a water supply pump or through a water receiving tank, water may not come out if the building has a power outage.

    Wisely stockpiling (rolling stock method)

    The rolling stock method is a method of keeping a certain amount by buying a little more drinking water on a regular basis and buying a new one as much as you use.

    Image of rolling stock method

    Image 2 of rolling stock method


    You can stock up with just a little effort! Introduction of Rolling Stock Method

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

    Please pay attention to the following points when storing water.

    <Methods and precautions for water storage>

    • Pour water to the mouth in a clean and lidable plastic container, etc., and make it full.
    • By boiling or passing through a water purifier, etc., the effect of chlorine may be lost, so please save the same tap water in a container.
    • Store in a cool place without direct sunlight, such as a refrigerator. (It can be stored for one week in winter and about 3 days in summer.) ※Please replace the water during this period as a guide.
    • The guideline for stockpiling is 3 liters per person per day for drinking water and 9 liters for 3 days.

    Storage drinking water "Yokohama Water Cans"

    Orders for stockpiling drinking water "Yokohama Water Cans" has been closed on Sunday, February 28, 2021.

    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.

    For inquiries to this page

    Water Works Bureau General Affairs Department General Affairs Division

    Phone: 045-671-3105

    Phone: 045-671-3105

    Fax: 045-212-1155

    Email address: su-somu@city.yokohama.jp

    Return to the previous page

    Page ID: 767-268-592

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