THESSALONIKI WATER AND SEWAGE COMPANY SA

Announcement of stockholders percentage alteration.

The Water Supply and Sewerage Systems Company of Thessaloniki S.A would like to announce the following:
According to the written announcement of today to the Capital Market Committee and to our Company as well, "SUEZ ENVIRONMENT COMPANY" based on L.3556/2007, announces that the following companies: a) SUEZ ENVIRONMENT and b) CALIGE which hold a voting rights percentage of 1.282.853, that is 3,534% (as of the 8th of December 2008) and 536.646, that is 1,4784% respectively in the capital stock of the "WATER SUPPLY AND SEWERAGE SYSTEMS COMPANY OF THESSALONIKI S.A.' belong entirely to "SUEZ ENVIRONMENT COMPANY", which therefore holds a voting rights percentage of 1.819.499, that is a 5,0124% percentage in EYATH S.A, as of the 8th of December 2008.