Chinese ecology and environment authorities announced punishments last Monday against 158 companies across the country that seriously exceeded pollution standards in the first quarter of this year.
Of the listed companies, half were sewage treatment plants. The others include 26 heat-supply companies, 7 non-ferrous metal metallurgy companies, and 14 coal and chemical companies, the Xinhua News Agency reported, citing the Ministry of Ecology and Environment (MEE).
Most of the listed companies have been fined. The highest fine, 18.8 million yuan ($2.8 million), went to a heat-supply company in Northwest China's Gansu Province.
That company updated its equipment to meet environmental protection standards starting April 2018, and is expected to complete the rectification before this winter, according to the MEE announcement.
Two sewage treatment plants on the list in North China's Inner Mongolia Autonomous Region have been fined 5.7 million yuan and 5.2 million yuan. The two companies completed reforms and met standards in early June 2018.
Authorities also announced four cases of false rectification.
Two of the cases were in Huludao, Northeast China's Liaoning Province, and the others were in Suzhou, East China's Anhui Province, and Qiandongnan autonomous prefecture, Southwest China's Guizhou Province.