GEOHG provides geological, hydrogeological and engineering-geological services throughout the Czech Republic. Led by Mgr. František Vlach, the business supports clients with site investigations and professional assessments, which can be arranged individually or as a broader package, ideally before design work begins.

Its services include radon surveys and field investigations using drilled or excavated probes, with sampling and documentation. GEOHG prepares hydrogeological assessments concerning the disposal of rainwater and treated wastewater from small domestic treatment plants or septic tanks, as well as the potential extraction of groundwater from a well. Engineering-geological assessments help evaluate ground conditions for foundations for houses, halls and roads. The company also offers geotechnical information needed to prepare these reports.

For water and renewable-energy projects, GEOHG prepares documentation for dug and drilled wells, including records of existing wells for administrative legalization, and for geothermal boreholes serving heat pumps. The scope of work can be tailored to a project.