However, it is inevitable to decrease the groundwater level around the mining area and even to influence the water supply safety of the constructed groundwater source fields.
为保证矿区安全开采，采矿本身要求排出大量的矿井水，这不可避免地使附近的地下水水位下降，并可能影响到已有地下水水源地的供水安全，产生供、排水矛盾。
A lot of fertilizer applications have become an important source of non-point source pollution in rural area, which affects the safety of surface water for drinking.
化肥的大量施用已成为农村面源污染的一个重要来源，直接影响到农村村镇地表饮用水安全。
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