城市水源 meaning in Chinese

urban water resource

In chinese north cities , more than 70 % of drinking water resource is surface water which has been seriously polluted by organic matters and algae
我国北方城市水源70以上为地表水，有机物污染严重，藻类大量繁殖，各种浮游动物孳生，常规处理工艺无法满足安全饮用水供应的需要。
It shows the short supplement of water , the contradiction of water supplement and demand is becoming conspicious . now china lacks 60 billion cubic meters in urban and 300 billion cubic meters in agriculture ; in the second place , water pollution and water waste are side by side . 80 percentage sewage has drained into the waters without handling , leading to one third rivers have been polluted , 90 percentage or more the source of urban water has been seriously polluted , 50 percentage or more the location of key urban water source has n ' t been accorded with the standard of drinking
主要表现在水资源供需形势日趋紧张，需求量与可利用水量之间矛盾尖锐，目前我国城市缺水60亿m ~ 3 ，农业缺水300亿m ~ 3 ；其次水污染与水浪费现象并重，目前在我国80左右的污水未经处理直接排入水域，造成全国1 3以上的江河段受到污染， 90以上的城市水源严重污染， 50以上的重点城市水源地不符合饮水标准。