Field testing of the various modules of the previously developed tool-box has stared this autumn on 3 cross-border pilot areas (SRB-RO-HU, SRB-BH and SLO-HU-HR). An important work is a massive data collection from operating thermal water wells and the calculation of various indicators that make a transparent comparsion possible among users, sites, or even countries in fields of utilization and thermal efficiency, monitoring practice, operational issues, over-expolitation, public awareness, etc. This is compelmented by field interviews with the thermal water well operators, as well as water sampling of some interesting sites.