The mineral processing plant of the Mining Company used about 500 tons of pyrite raw ore, ethyl sodium xanthate, and No.2 oil for illegal production, and the wastewater and tailings untreated were discharged into the nearby nature hollow where karst funnel was developing. This affected the water quality of the drinking water intake of Qianzhangyan Reservoir.
The plaintiff, Chongqing Volunteer Federation, filed an environmental civil public interest lawsuit against the Mining Company, requesting that the defendant cease the infringement and assume the responsibility for ecology and environment restoration. The Second Branch of the People's Procuratorate of Chongqing Municipality supported the prosecution.
The Primary People's Court of Wanzhou District of Chongqing Municipality ordered that the Mining Company immediately ceases infringement on the drinking water source; formulates a restoration plan and carries out restoration (or pays compensation); apologizes to the national media; pays the plaintiff’s costs. The Second Intermediate People's Court of Chongqing Municipality upheld the judgment on appeal.