Bulletin of the Faculty of Letters, Hosei University

全国一斉調査

河川

水質特性

Water Environment

National Survey

Rivers

Water Quality Characteristics

In Japan, due to inadequate wastewater treatment, rivers, lakes and marines became severely polluted due to the remarkable economic development during the high-growth period. From the 1980s to the 1990s, the water quality of rivers improved rapidly, and then the water environment of lakes and marines improved. However, from the point of view of the general public, there is still significant water pollution in the immediate area, which is inconsistent with the “water environment survey results for public water bodies” published by the government. Therefore, in 2004, the “national simultaneous survey of the water environment around us” began, centered on the general public such as individuals and NPOs, and participated in Hosei University for many years. He has also been involved in management as an executive committee member. In particular, since 2018, Hosei University has continued to survey 15,000 to 2,000 points, mainly in prefectures with a small number of points, in order to prevent bias in observation points. Around 2020, some of the results were organized and the water quality characteristics of rivers throughout Japan were clarified.

102 文学部・人文科学研究科 ＞ 紀要 ＞ 法政大学文学部紀要 ＞ 84