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Acid rain information

Last Updated November 6, 2024

The Institute for Environmental Science conducts long-term monitoring of acid rain.
On this page, we will inform you of the monitoring results.

For an overview of the survey, see the survey page on air and water environment.

Acid rain information (Kanagawa Ward)

pH and electrical conductivity measurement results of collected rainfall (we collect about one month of precipitation and measure pH and electrical conductivity) 
Collection period pH

Electric conductivity
(μS/cm)

Precipitation
(mm)

From March 25 to May 7, 2024 5.11 21.10 231.7
May 7-June 3, 2024 5.27 11.12 186.0
June 3-July 1, 2024 5.14 10.39 347.2
From July 1 to July 29, 2024 4.82 12.19 97.0
July 29-August 26, 2024 5.22 16.62 69.0
From August 26 to September 24, 2024 5.43 9.31 237.7 or higher ※1
From September 24 to November 5, 2024 5.25 8.66 205.7

※1 During heavy rain, some of the rainfall could not be collected due to overflow from the water sampling container.

Acid rain information up to FY2023

※Kanagawa Ward from FY2015 onwards and Isogo Ward before FY2014

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Inquiries to this page

Environmental Science Research Institute, Environmental Conservation Department, Green Environment Bureau

Telephone: 045-453-2550

Telephone: 045-453-2550

Fax: 045-453-2560

Email address: mk-kanken@city.yokohama.lg.jp

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Page ID: 858-142-306

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