ABSTRACT: Groundwater has an impact on formation and spread of saline soils, mainly through dissolved solids and the groundwater level regime. This paper evaluates characteristics of groundwater mineralization in the Medzibodrožie area, and determines the risk that this groundwater poses in salinization and alkalization of this soil. The 1986 − 2008 indices of the following environmental components in the Medzibodrožie area were evaluated; the concentrations of dissolved solids (HCO3-, SO42-, Cl-, Ca2+, Mg2+, Na+ and K+), pH, electrical conductivity, the sodium adsorption ratio values of water and also trends in the average annual levels of the groundwater tables. The electrical conductivity values ranged from 15 mS/m to 120 mS/m, and they showed an increasing tendency in most monitored groundwaters between 1986 and 2008. This groundwater is classified as medium to highly mineralized, with a medium to high degree of danger of soil salinization. The sodium adsorption ratio values - 10 indicated a low risk of soil alkalization due to this groundwater, and showed decreasing tendency in most monitored groundwaters during the evaluated period. Trends for the annual average levels of groundwater tables increased in all areas, except for Somotor, in the 1986 - 2008 hydrological years.