Hydrogeological or groundwater investigation is carried out to determine:

• the prospective water-bearing horizon and its suitability for the intended use of the water;
• the characteristics of the selected horizon (groundwater level fluctuations, flow direction and gradient, the degree of protection of the horizon, etc.);
• the quality status of the groundwater (physicochemical parameters, microbiological and other indicators);
• the technical condition of existing water abstraction boreholes, their operational yield, and usage.