The total water demand in the Penghu area is about 30,000 tons per day ,The Magong Distribution System(water supply Including Peinan and Huxi area) Mainly raw water applied by the Chenggong Water Purification Station、Magong deep well、Chenggong Salt plant and Wukan Haichang factory，and the water distribution system of the independent islands as Baisha、Xiyuping、 Wang‘an、 Qimei are provided by the Xi'an、Xiaochi、Qimei 、 Wugong Reservoir and local Regional /Haichang factory/groundwater .