Environmental standard achievement rate, 87% by river 1999.08.15

The Ministry of Construction announced the results of the 1998 national first-class river water quality survey. We met the environmental standard of the highest 87% (up 7 points yoy) of all 1094 points. The most beautiful river in the Kurobe River (Toyama Prefecture) and Ababe (Shizuoka Prefecture) is a BOD average of 0.3 milligrams per liter because there is a lot of rain nationwide and the flow rate was abundant. On the other hand, the worst one is 5.8 milligrams in the Yamato River which flows through Nara Prefecture.