• Japan: drinking water penetration rate 2018

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Around 98 percent of the population in Japan had access to drinkable tap water from water services in fiscal year 2018, following a slow but steady increase in the 2010s. Tap water in Japan is supplied using three systems: waterworks, a small-scale water-supply system, and a private water supply system. The Japanese government strictly regulates tap water under the Water Supply Act enacted in 1957 to supply safe and drinkable water to the citizens.

Share of population with access to drinkable tap water from water services in Japan from fiscal year 1950 to 2018

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Release date

July 2020

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Region

Japan

Survey time period

fiscal year 1950 to 2018; the Japanese fiscal year starts on April 1 of the stated year and ends on March 31 of the following year

Supplementary notes

Tap water penetration rate= total number of population with access to tap water (supplied with waterworks + supplied with a small-scale water-supply system + supplied with a private water supply system) / total number of population

Due to the Great East Japan Earthquake (Tohoku earthquake) that occurred in 2011, figures from following areas in Fukushima Prefecture were not included: Futaba, Okuma, Tomioka, Katsurao, Iitate, Hirono, and Naraha.

The source does not provide an exact publication date. The release date given here is the day of data access.