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Chronological table

Last update date March 22, 2019

Step ... of history - Yokohama-shi and modern water supply

Step ... of history - Yokohama-shi and modern water supply
1859 (Ansei 6)The Yokohama opening of a port
1887 (Meiji 20)Modern water supply completion (Mitsui water intake place, Mt. Noge water purification plant) first Japanese in Yokohama
October 17 water supply start
1889 (Meiji 22)Yokohama-shi birth (April 1)
1890 (Meiji 23)

Water supply regulations establishment
We transfer water supply in Yokohama-shi

1897 (Meiji 30)We draw water from the Doshi River and start
1901 (Meiji 34) ...
1915 (Taisho 4)
The first - second extension works completion
(the Mt. Noge water purification plant reinforcement, Kawai, Nishiya water purification plant, abalone child water intake place, Aoyama deposition pond)
1916 (Taisho 5)We purchase forest about 2,780ha in Doshi-mura from Yamanashi and start management of forest at the head of a river
1923 (Taisho 12)The Great Kanto Earthquake
1937 (Showa 12) ...
1941 (Showa 16)
The third expansion first, the second construction completion
(the Nishiya water purification plant reinforcement, the Aoyama deposition Pond reinforcement, abalone child intake remodeling)
1942 (Showa 17)We surpass a population of 1 million people
1945 (Showa 20)The Pacific War end of the war
1947 (Showa 22)Sagamiko completion
1954 (Showa 29) ...
1965 (Showa 40)
The fourth - sixth extension works (the Nishiya water purification plant reinforcement, Sagamihara deposition pond, Tsurugamine, willow tit water purification plant, maintenance of Samukawa water intake facility)
1959 (Showa 34)Yokohama opening of a port 100 years
1965 (Showa 40)Lake Tsukui completion
1968 (Showa 43)We surpass a population of 2 million people
1971 (Showa 46) ...
1980 (Showa 55)
The seventh - eighth extension works completion (willow tit, Nishiya water purification plant and the aqueduct reinforcement, each Konandai et al. distributing reservoir construction)
1978 (Showa 53)Lake Tanzawa completion
1986 (Showa 61)We surpass a population of 3 million people
1987 (Showa 62)The modern Channel foundation 100th anniversary
2001 (Heisei 13)Lake Miyagase completion
2003 (Heisei 15)"Oh, it is started the true children" release
2004 (Heisei 16)We conclude Doshi-mura, Yamanashi and agreement about friendship, interchange
2009 (Heisei 21)"Meeting of non profit organization way will forest at the head of a river volunteer" establishment
2009 (Heisei 21)The Yokohama opening of a port 150th anniversary
2014 (Heisei 26)The Tsurugamine water purification plant abolition
The Kawai water purification plant (ceraRocca) completion
Great belt line maintenance completion
2015 (Heisei 27)The Nishiya water purification plant foundation 100th anniversary
2015 (Heisei 27)The willow tit water purification plant foundation 50th anniversary
2016 (Heisei 28)Way will forest at the head of a river 100 years
2017 (Heisei 29)Modern water supply foundation 130 years

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Water Works Bureau General Affairs Department General Affairs Division

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Telephone: 045-671-3105

Fax: 045-212-1155

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