W.W.T.P. MUNICIPALITY OF KASSANDRA
W.W.T.P. CITY OF KILKIS
W.W.T.P. MUNICIPALITY OF CHALASTRA
W.W.T.P. COMMUNITY POLICHRONO
W.W.T.P. COMMUNITY NEA FOKAIA
W.W.T.P. COMMUNITY KALIFEA
W.W.T.P. MUNICIPALITY OF MIGDONIA
W.W.T.P. MUNICIPALITY OF IRAKLEIA - SIDIROKASTRO - N. SKOTOUSA
W.W.T.P. TERTIARY TREATMENT OF CITY KAVALAS