Municipal Water Supply and Sewerage Company of Larissa
Ministry of Environment and Energy
Municipal Water Supply and Sewerage Company of Kozani
Special Account for Research Funds, Department of Civil Engineering, Univ. Thessaly
Korytsa Water Supply and Sewerage Company
Nicosia Water Supply Council
Water Supply Association of Bulgaria
Public Sewerage Company Prilep
European Association of National Water Companies
Water Supply Association of Albania