Due to rising energy demand, awareness of environmental problems caused by fossil fuels, and the aim of reducing greenhouse gas emissions, interest in shallow geothermal use has increased. Ground source heat pump technologies are a popular choice due to their high efficiency and relatively low operating costs. The ELI-NP research infrastructure was outfitted with the largest shallow ground source heat pump (GSHP) system in Europe to provide the energy needed for air conditioning, heating, ventilation, hot water, and technological cooling. Due to its very complexity, the HVAC geothermal system with heat pump units (GSHP) that equips the ELI-NP research infrastructure could be a suitable tool for determining the long-term impact of shallow geothermal systems on the environment. The purpose of this paper is to present research that investigates the impact of the GSHP system with heat pump units installed in the ELI-NP infrastructure on ground and groundwater. Measurements of the hydrostatic level and temperature have been performed. The real-time data available provide a timeline for the evolution of measured parameters and enable comparison of parameter values upstream and downstream of the geothermal system. The results of this study could contribute to improve quality and safety controls of GSHP systems, and it is also important for sustainable use of shallow geo-thermal energy.