Representatives of the International Commission for the Protection of the Rhine , the International Meuse Commission , the International Sava River Basin Commission as well as the Scientific Information Center of the Interstate Coordination Water Commission ( SIC-ICWC ) , the UNESCO Centre for Water Law , Policy and Science , and the WHO Collaborating Centre Institute for Hygiene and Public Health were present . The following regional environmental centres were represented : the Regional Environmental Center for Central and Eastern Europe ( REC-CEE ) , the Regional Environmental Center for Central Asia ( CAREC ) , the Regional Environmental Center for Moldova and the Regional Environmental Center for the Caucasus .