Studies have linked abandoned wells to groundwater pollution in the United States.

各项研究已经把废井和美国地下水污染联系起来了。

It said work should be done to strengthen the control of activities polluting groundwater and the rules that prevent groundwater pollution caused by soil pollution, production and construction activities should be refined.

强化对污染地下水行为的管控，细化防止生产建设活动污染地下水的制度。细化防止土壤污染导致地下水污染的制度。