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美国是地表水和地下水比较丰富的国家。但据资料介绍其淡水水源90%以上赋存于地下含水层。美国前两年年开采地下水数量已超过1100亿立方米,有人估计按此消耗量美国地下水可供全国继续使用近8000年。美国是水井工业发达的国家。全国有七、八千家水井承包商,有若干百家闻名的生产水井系统设备和配套器具的公司,其中
The United States is a country rich in surface water and groundwater. However, according to the information, more than 90% of its freshwater sources are present in underground aquifers. The amount of groundwater extracted by the United States in the previous two years has exceeded 110 billion cubic meters. Some estimate that groundwater consumption in the United States will last for nearly 8,000 years for the entire country. The United States is a well-developed water well country. There are seven or eight thousand water well contractors in the country and there are several hundred well-known companies that produce well system equipment and ancillary equipment, among which