backup water source region 备用水源地
drinking water source region 饮用水源区
The results show that the water quality in the water-source region is far worse than that in Yangtze River. It can be seen that the water quality in the water-source region is severely polluted.
结果表明水源地长江水域水质背景值远较长江本底值为差，由此可见水源地水质受岸源污染较为严重。
参考来源 - 水源地安全可靠性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
GAPs investigations show that every single water source in the region was intensively and relentlessly exploited.
GAP项目调查显示，这块区域里每一个单独的水资源已经被无情地过度开发了。
89% of the population in that region now have access to an improved water source, up from just 69% in 1990.
该地区能够获得安全水源的人口从1990年的只有69%增长到现在的89%。
It was, however, the sole source of potable under water in the region.
但是，它是这一地区唯一的饮用水源。
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