China plans to close numerous small-scale enterprises in nearly a dozen industries, including dyeing plants, oil refineries and pesticide producers, in an effort to clean up its water supply. The goal is to significantly improve water quality by 2020, according to a plan released Thursday by the State Council, China’s cabinet. It aims to ensure that at least 70% of the water quality of major river basins reaches Grade 3 on a five-point scale–considered good enough to use as drinking water. The plan also aims to make 93% of water supply for China’s several hundred largest cities reach the same level of quality. From the factory-discharged wastewater that turns China’s rivers into a rainbow […]