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Water quality test annual report

Last update date April 24, 2020

City of Yokohama, Water Works Bureau performed water quality test, inspection in water source, water purification plant, feed cock based on "City of Yokohama, Water Works Bureau 2018 examination of water plan" that we devised based on opinions from customer.
"Water quality test annual report" gathered various examinations, test results that we carried out based on examination of water plan. Examination of water result of tap water adapts to water supply standard of water and proves that you can use by security in peace.

Water quality test annual report (the latest edition)

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Past water quality test annual report

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Water Works Bureau customer Service Center

Telephone: 045-847-6262 fax: 045-848-4281
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The Water Works Bureau clean water part quality of the water section

Telephone: 045-371-5656

Telephone: 045-371-5656

Fax: 045-371-6942

E-Mail address [email protected]

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