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Final update date March 22, 2019

History-The History of Yokohama City and Modern Waterworks-

History-The History of Yokohama City and Modern Waterworks-
1859 (Ansei 6)Opening of Yokohama
1887 (Meiji 20)Japan's first modern water supply was completed in Yokohama (Mitsui Intake Station, Nogeyama Water Purification Plant)
Water supply started on October 17
1889 (Meiji 22)Born in Yokohama (April 1)
1890 (Meiji 23)

Water ordinance enacted
Transfer of water supply to Yokohama

1897 (Meiji 30)Water intake started from Doshikawa
1901 (Meiji 34)~
1915 (Taisho 4)
1st to 2nd expansion work completed
(Nogeyama water purification plant expansion, Kawai / Nishitani water purification plant, Abalone child water intake, Aoyama sinking pond)
1916(Taisho No.5Purchased approximately 2,780ha of forest in Doshimura from Yamanashi Prefecture and started management of water source forest.
1923 (Taisho 12)Great Kanto Earthquake
1937 (Showa 12)~
1941 (Showa 16)
Completion of the first and second phases of expansion
(Nishiya water purification plant, Aoyama sinking pond, abalone child intake remodeling)
1942 (Showa 17)population exceeds 1 million
1945 (Showa 20)The end of the Pacific War
1947 (Showa 22)Completion of Lake Sagami
1954 (Showa 29)~
1965 (Showa 40)
The 4th to 6th expansion work (Nishiya water purification plant expansion, Sagamihara sinking pond, Tsurugamine / Kojaku water purification plant, Samukawa water intake facility maintenance)
1959 (Showa 34)100 Years of Yokohama Opening
1965 (Showa 40)Completion of Lake Tsukui
1968 (Showa 43)Over 2 million people
1971 (Showa 46)~
1980 (Showa 55)
The 7th to 8th expansion work completed (Kojaku / Nishiya water purification plant and water pipe enhancement, Konandai and other distribution reservoirs)
1978 (Showa 53)Lake Tanzawa completed
1986 (Showa 61)population exceeds 3 million
1987 (Showa 62)100th Anniversary of Modern Water Supply
2001 (Heisei 13)Lake Miyagase completed
2003 (Heisei 15)Launched "Hamako Doshi"
2004 (Heisei 16)Concluded an agreement on friendship and exchange with Doshimura, Yamanashi Prefecture
2009 (Heisei 21)Established the Nonprofit Organization Doshi Water Source Forest Volunteer Association
2009 (Heisei 21)150th anniversary of the opening of Yokohama
2014 (Heisei 26)abolition of Tsurugamine water purification plant
Completed Kawai Water Purification Plant (Seralocca)
Great Loop Line Maintenance Completed
2015 (Heisei 27)The 100th anniversary of Nishitani Water Purification Plant
2015 (Heisei 27)The 50th anniversary of the establishment of the Kojaku Water Purification Plant
2016 (Heisei 28)Doshi Water Source Forest 100 Years
2017 (Heisei 29)130 years of modern water supply

For inquiries about water supply, please contact Water Works Bureau Customer Service Center.

Water Works Bureau Customer Service Center

Telephone: 045-847-6262 Fax: 045-848-4281
※Please be careful not to make a mistake.

Inquiries to this page

Water Works Bureau General Affairs Division, General Affairs Department

Telephone: 045-671-3105

Telephone: 045-671-3105

Fax: 045-212-1155

Email address: [email protected]

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Page ID: 925-590-3633

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