The springs in Xi Du are very good. According to relevant information, the natural drinking water production base of Enshi Xi Du Shanquan Beverage Co., Ltd. is located in Bijiashan Water Source Protection Area, Ba Village, Gao Qiao, Enshi City, the world's selenium capital, and it is 2 km away from Enshi Prefecture/KLOC-0. The water source system is the spring water gushing from the deep layer of accumulated rocks. The surrounding peaks are winding, the mountains are beautiful and the trees are lush. Beautiful environment, no pollution. The water temperature is kept at around 8℃ all the year round, which is not affected by any climate change. The water quality is clear and transparent, cool and refreshing. It is rich in selenium and strontium, and contains many trace elements such as calcium, magnesium, iron and copper. The pH value is natural.