西大洋水库作为保定市城市供水水源地已于2002年6月开始向保定市供水。为了进一步加强对水源地水质的监测工作，保证用水群体的饮、用水安全，对水源地保护区地质环境进行调查是必要的。%Xidayang reservoir, as Baoding urban water supply source, has began to supply water to Baoding in June 2002. In order to further strengthen the monitoring of water quality and ensure drinking water safety, it is necessary to investigate the geological environment of water source protection area.
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