Within the scope of mining activities, the necessary water requirement is provided from surface waters or production wells to be drilled in suitable places. In the case of the water needs are supplied from wells, the hydrogeological structure of the region is examined and appropriate units are selected. Water supply from the units that can be defined as aquifers in appropriate lithologies is provided after the necessary efficiency tests.

Observation wells are used for various purposes. Objectives vary according to the type of hydrogeological study to be done. Groundwater level measurement, sampling in monitoring studies and observation for the purpose of impact radius calculations during aquifer tests are the main ones.