Points to Consider When Storing Tap Water

In the event that the water supply becomes unavailable due to natural disasters or power outages, preparing stored tap water can also be a part of disaster preparedness. However, please keep the following points in mind when storing water.

1. How to Store Water
   Fill a clean, lidded container to the brim with water.
2. Storage period for prepared water
   Avoid direct sunlight, approximately 3 days at room temperature and 10 days in the refrigerator.
3. Guideline for the amount of water to store
   Approximately 3 liters per person per day

(For details, please see the 'Points to Note When Storing Water' on the Tokyo Metropolitan Waterworks Bureau website.)

• Tokyo Metropolitan Waterworks Bureau Website(External Link)