THESSALONIKI WATER AND SEWAGE COMPANY SA

Announcement

The Water Supply and Sewerage Company of Thessaloniki S.A announces that, with the application of article 279 of the Athens Stock Market Regulation, according to the decision of the Annual Stock Holders Regular Meeting of the 29th of June 2007, the dividend for the fiscal year 2006 amounts to 0,18 Euros per stock. Beneficiaries for the above mentioned dividend are the Company stock holders on the end of the Athens Stock Market meeting of the 16th of August 2007. Friday the 17th of August 2007 has been set as the day for the dividend cut. Consequently, from that day the Company stocks will be dealt in the Athens Stock market without the right to collect on the dividend for the fiscal year 2006. Payment of the dividend will take place on the 27th of August 2007 from the paying bank EFG EUROBANK Ergasias as follows:
1. Through their handlers in the Dematerialized Securities System (D.S.S), according to articles 329 of the Athens Stock Market Regulation and 39 of the Company Regulations of "Greek Stock Markets S.A." former Central Securities Depository (CSD).
2. Through the EFG EUROBANK Ergasias bank network, for those stock holders who have requested to be exempt from their handler in the D.S.S.
3. Stock holders for which credit through their handlers will not be possible, for various reasons, will be able to receive the dividend in person or through their legal representatives in the EFG EUROBANK Ergasias bank?s entire network, presenting their Identity Card or the relevant beneficiary power of attorney letter, certified as to the authenticity of signature by a Public Authority, respectively, and in any case presenting the print out of the details of the Investors Share Code Number in the D.S.S .
Dividends which will not be collected in five (5) years are passed in favor of the Greek State. For more information stockholders can address the Stockholders Service and Company Announcements Office of the Company (2310 286613).