The study is focused on the dolomite-limestone drinking water aquifers in the Boč massif, as well as on the andesite-aquifer containing mineral water in the vicinity of Rogaška Slatina. The catchment area is limited and both drinking and mineral waters are discharged from the same source. The increasing use of deeper aquifers means that natural springs and shallow wells have become sporadic. Consequently new techniques of investigating recharge and aquifer capacity are required which can augment classical hydrogeological methods.