Domestic Water Supply

Understand the water supply system in Japan and the different providers involved...

The water supply in Japan is overseen by the Japan Water Works Association. Tap water is generally clean and safe for drinking. However, the Japanese government has advised caution, especially for babies and small children, in drinking the water in certain regions after the Fukushima nuclear plant disaster.

  • For information from the Ministry of Health, Labour and Welfare about the effect of the 2011 earthquake on the Japanese water supply: Click here (PDF)

There are several water providers depending on the region and they are responsible for water supply and sewerage.

  • For an overview of the water supply system from the Ministry of Health, Labour and Welfare: Click here
  • For a list of water providers: Click here (in Japanese)

To get connected to the local water supply contact the provider by phone or internet. Connection usually takes a few days.

Paying bills

A water bill is issued every two months and is based on a meter reading. Customers are notified of the amount of water used and the payment required.

Payment can be made in the following ways:

  • Bank or post office account transfer
  • By credit card
  • Using the payment slip - this is part of the bill sent by the water company and can be used to pay at a branch of the water company, a bank, post office or convenience store