In general, monitoring of groundwaters is less advanced in terms of quantity, and especially in terms of quality. For many countries (particularly for non-EU countries), either quality or quantity monitoring has to be improved or still needs to be established. Some countries have jointly carried out a groundwater body characterization according to the requirements of the WFD, e.g., Austria and Slovenia characterized the Karstwasser-Vorkommen Karawanken/Karavanke aquifer.