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2015年,北京市水资源总量为26.76亿立方米按照年末常住人口2170.5万人计算,北京市人均水资源占有量仅为123立方米,不足全国人均水资源占有量二十分之一,地表及地下水系污染问题也日趋严重。且近年来整个京津冀地区降水不断减少,地下水回补严重不足,水位持续下降,已造成明显的地面沉降,继续大量开采地下水必将带来严重的后果。当前北京市保障性水源有限,主要是南水北调工程一旦北京市及南水北调水源地出现气候异常或水体严重污染,不仅无法满足北京城市用水需求,且会对社
In 2015, the total amount of water resources in Beijing is 2.676 billion cubic meters. According to the figure of 21,705,000 people living at the end of the year, Beijing’s per capita water resources occupy only 123 cubic meters, less than one-twentieth of the national average. And groundwater pollution is also worsening. In recent years, the precipitation in the entire Beijing-Tianjin-Hebei region has been declining. There has been a serious shortage of groundwater recharge and the water level has been continuously declining. As a result, significant land subsidence has been caused. Continued extensive exploitation of groundwater will inevitably bring serious consequences. At present, there are limited water resources in Beijing, mainly due to the water diversion project in Beijing and the South-North Water Diversion Project. When climate anomalies or serious pollution of water bodies occur, not only can Beijing’s urban water demand be not met,