COD volume in Japanese lake water 2006-2015

The statistic displays the overall average amount of chemical oxygen demand (COD) in lakes in Japan from fiscal year 2006 to 2015. In fiscal 2015, the COD volume in all designated lakes in Japan amounted to approximately 5.9 milligrams per liter, representing an increase from around 5.5 milligrams per liter in the previous fiscal year.

Overall average amount of chemical oxygen demand (COD) in lakes in Japan from fiscal year 2006 to 2015

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Source

Release date

September 2017

Region

Japan

Survey time period

fiscal year 2006 to 2015; the Japanese fiscal year starts on April 1 of the stated year and ends on March 31 of the following year

Supplementary notes

According to the source, the values are calculated from the mean value of each lake by averaging them. (Hachirogata regulating pond was excluded until FY2007. It was included in FY 2008.)

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Statistics on "Environmental management in Japan"

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