21.15109/ARP/PZINV9Erőss, AnitaAnitaErőss0000-0002-2395-3934ELTE Eötvös Loránd University, Institute of Geography and Earth Sciences, Department of Geology, József and Erzsébet Tóth Endowed Hydrogeology ChairCsondor, KatalinKatalinCsondor0000-0002-3368-9620Eötvös Loránd University, Department of GeologyBaják, PetraPetraBaják0000-0002-0301-4438Eötvös Loránd University, Department of GeologyARP2025Earth and Environmental Sciencesgroundwatersurface waterstable isotopic composition of watermajor ions, trace elementsuranium, radium, radongroundwater qualityhydrogeochemistryErőss, AnitaAnitaErőssELTE Eötvös Loránd University, Institute of Geography and Earth Sciences, Department of Geology, József and Erzsébet Tóth Endowed Hydrogeology ChairErőss, AnitaAnitaErőssELTE Eötvös Loránd University, Institute of Geography and Earth Sciences, Department of Geology, József and Erzsébet Tóth Endowed Hydrogeology Chair2024-07-042025-01-21water quality measurement data123456710.1016/j.jenvrad.2018.10.00210.3390/w1406095110.1016/j.apgeochem.2022.105201253765application/vnd.openxmlformats-officedocument.spreadsheetml.sheet1.0CC BY-NC-ND 4.0Summary of groundwater and surface water geochemical data from field sampling campaigns from between 2018 and 2023.The dataset provides a snapshot of the groundwater-quality and hydrogeochemical composition of the waters in the Velence Lake regions. Important to note, this is an ongoing campaign and further versions of the dataset may expand the number of sites and most probably the set of measurements. However, the set of variables are unlikely to change.46.939947.370818.420718.89