Hydrogeology is the vicinity of geology that offers the distribution and motion of groundwater in the soil and rocks of the Earth's crust (typically in aquifers). The phrases groundwater hydrology, geohydrology, and hydrogeology are regularly used interchangeably.Groundwater engineering, any other name for hydrogeology, is a branch of engineering that's worried with groundwater motion and design of wells, pumps, and drains. The primary concerns in groundwater engineering consist of groundwater infection, conservation of elements, and water exceptional. Wells are built to be used in developing countries, in addition to for use in developed international locations in locations which aren't linked to a city water device. Wells need to be designed and maintained to uphold the integrity of the aquifer, and to prevent contaminants from accomplishing the groundwater. Controversy arises inside the use of groundwater while its utilization impacts floor water structures, or while human activity threatens the integrity of the local aquifer system.