Read about some things to consider when creating a ground water recovery system.
The first criterion for designing a properly run system is to have a good understanding of the hydrogeology of the site and the areal and vertical extent of the contaminants. Usually the contamination originates at one or only a few source areas. After the source area(s) is identified, the shape and direction of the plume can be used as a ground water tracer to design the recovery system, which should incorporate characteristics of the natural flow system to facilitate the cleanup. In other words, the natural flow direction should be used to locate the recovery wells in areas to intercept the flow rather than “pull” the ground water in a direction that it would not normally flow.