Protection of transboundary aquifers of Međimurje County (Croatia): status and prospects

Abstract

Međimurje County abounds in both potable and geothermal water aquifers. Owing to its position in the northernmost part of Croatia, it borders Slovenia and Hungary and shares these resources with them. Transboundary character of shallow alluvial aquifer has been demonstrated, while for deeper geothermal aquifers it can be supposed on the basis of hydrochemical and geological setting, but should be verified by more thorough research. In order to protect the transboundary aquifers, it is necessary to establish a wide cooperation of the three states. Pollution is the greatest threat to the potable water aquifer. Deep geothermal aquifers could be depleted through overpumping in the lack of trilateral consensus. Potable water aquifer receives multiple protective measures, but the geothermal aquifers are not investigated enough and receive no formal protection.