Japan’s first modern water supply system was introduced in Yokohama and began its operation in 1887. At the time, the modern water supply system, which provides purified water with pressure through mains, was needed to prevent the infection of water-borne diseases.

Japan's Experiences on Water Supply Development T2-4 1. Introduction Q1. How did Japanese water utilities choose water sources and maintain facilities for stable and economical safe water supply? Q2. How did they develop water sources to meet increasing demand? How did they manage the conflicts with other water use? How do they share the cost with

Japan's Experiences on Water Supply Development C4-13 ⚫ (Block Distribution System) The system is used by most Japanese water utilities. It is very effective in reducing leakage and maintaining stable supply by: (1) optimizing water pressure in distribution pipelines, (2) measuring flows in small areas to allow early detection of abnormal

Universal and equitable access: Japan expanded water supply networks nationwide, including to rural areas, thus achieving 97.8% water supply coverage as of 2014. This was made

Access to an improved water source is universal in Japan. 97% of the population receives piped water supply from public utilities and 3% receive water from their own wells or unregulated small systems, mainly in rural areas.

Japan Water Works Association (JWWA), a Public Interest Incorporated Association, was established on May 12th, 1932 with the aim of spreading water supply in Japan and sound development of water supply technologies. Water supply is an essential lifeline for people’s daily life as well as social and economic activities.

Japan’s !rst modern water supply system was introduced in Yokohama and began its operation in 1887. Following the operation in Yokohama, the water supply system spread in municipalities all over Japan. The waterworks act, in which the chlorination was imposed, was implemented in 1957. Development modern waterworks in Japan ©Japan Water Works ...

Fig. 1 shows the main structure of water supply network in Tokyo. The network consists of the set of nodes corresponding to water intake points, intermediate points and demand points, and the...

Sep 21, 2018 · [4-1] Japan’s First Large Scale Efforts on the Model Project of Smart Water Meter [4-2] Investigation of applicability of Smart Meter (multifunctional meter for water supply) to the city of Tokyo [4-3] Ensuring Stable Water Supply by Centralized Administrative Control over a Large-Scale Water Supply Network

Japan has achieved 98% of water supply coverage and almost all residents in Japan can enjoy a high level of public health with safe drinking water.