For example, in Yunlin County it has long been illegal to dig wells for agricultural irrigation. But just in the townships of Tuku, Yuanchang, and Peikang, through which the high-speed rail line passes, nearly 2500 illegal wells have been dug, causing land subsidence of 5-7 centimeters a year. This seriously endangers the safety of the high-speed rail service.
例如雲林地區，長年以來違法打井抽用地下水灌溉農地，單單是土庫、元長、北港三個高鐵行經的鄉鎮，就有近兩千五百座的違法水井，每年沈陷達五到七公分，嚴重影響高鐵行車安全。