Be careful about removing groundwater, it may be the only thing holding up your house.
From Weird Asia News
China’s rapid development has emphasized both the need for and problems associated with the extraction of groundwater for human consumption.
In coastal cities such as Tianjin, Hebei, Shandong and Shanghai, where the groundwater accounts for 70% of the total water supply, saltwater intrusion has led to the contamination of fresh groundwater and in some instances the inability to irrigate important crops.
In those areas of the most rapid urbanization–namely the Yangtze River Delta–the plains of Northern China and the Fen-Wei River region, there is an even greater problem associated with groundwater extraction, and that concerns the solidity of the ground itself.
