Medical geology is an emerging interdisciplinary scientific field studying the relationship between natural geological factors and their effects on human and animal health. Whereas Hydro Geologist deals with distribution and movement of ground water in the soil and rocks of the earth crust. In addition to this quality of water and their chemical compositions.
I confirm Mr Virendra Kumar Saxena 's answer. The quality and chemical composition of such waters will change. And parameters like water hardness, anions and cations concentration and heavy metals concentration must be controlled.