DETERMINANTS OF WATER USE AND PERSPECTIVES OF A DEMAND-ORIENTED WATER MANAGEMENT IN HOTELS IN THE CITY OF THESSALONIKI, GREECE Dimitra G. Vagiona and Yannis A. Mylopoulos Department of Civil Engineering – Faculty of Engineering Aristotle University of Thessaloniki Thessaloniki 54124, Greece E-mail: dimvag@civil.auth.gr , mylop@civil.auth.gr ABSTRACT The main objective of this study is to investigate the influencing factors of water use, in the commercial sector, concerning hotels in the city of Thessaloniki, Greece. An overview of water use in these hotels is first presented. Variables that seem to effect water consumption, such as the price of water, the number of rooms, the classification code of the hotel, the existence of swimming pool, laundry facilities and gardens are examined and a model, which includes all these variables is created. In this paper, public information concerning water and environmental issues, public reactions in price changes and public willingness to pay are also briefly discussed. ΠǹΡǹΜǼΣΡΟΙ ΠΟΤ ǼΠǾΡǼǹǽΟΤΝ ΣǾ ǽǾΣǾ΢Ǿ ΣΟΤ ΝǼΡΟΤ ΢ΣΙ΢ ΞǼΝΟ∆ΟΥǼΙǹΚǼ΢ ΜΟΝǹ∆Ǽ΢. Ǿ ΠǼΡΙΠΣ΢Ǿ ΣǾ΢ ΘǼ΢΢ǹΛΟΝΙΚǾ΢. Ǻαδ ∆µβIJλα εαδ Μζσζμ Γδβμ ȉµȒµα ȆȠȜȚIJȚțȫȞ ΜȘχαȞȚțȫȞ ΑȡȚıIJȠIJȑȜİȚȠ ȆαȞİπȚıIJȒµȚȠ ΘİııαȜȠȞȓțȘȢ ΘİııαȜȠȞȓțȘ 54124, ΕȜȜȐįα ǾζİεIJλδε įδİτγıβ: dimvag@civil.auth.gr , mylop@civil.auth.gr ΠǼΡΙΛǾΦǾ ȅ țȪȡȚȠȢ ıțȠπȩȢ IJȘȢ İȡȖαıȓαȢ İȓȞαȚ Ș įȚİȡİȪȞȘıȘ IJωȞ παȡαȖȩȞIJωȞ πȠυ İπȘȡİȐȗȠυȞ IJȘȞ țαIJαȞȐȜωıȘ IJȠυ ȞİȡȠȪ ıIJα ȟİȞȠįȠχİȓα, IJωȞ ȠπȠȓωȞ Ș χȡȒıȘ IJȠυ ȞİȡȠȪ țαIJαIJȐııİIJαȚ ıIJȠȞ ݵπȠȡȚțȩ IJȠµȑα. ȅȚ µİIJαȕȜȘIJȑȢ πȠυ φαȓȞİIJαȚ Ȟα įȚαµȠȡφȫȞȠυȞ IJȠ İπȓπİįȠ țαIJαȞȐȜωıȘȢ IJȠυ ȞİȡȠȪ, ȩπωȢ İȓȞαȚ Ș IJȚµȒ IJȠυ ȞİȡȠȪ, Ƞ αȡȚșµȩȢ IJωȞ įωµαIJȓωȞ, Ș țαIJȘȖȠȡȓα ıIJȘȞ ȠπȠȓα αȞȒțİȚ IJȠ ȟİȞȠįȠχİȓȠ, Ș ȪπαȡȟȘ πȚıȓȞαȢ, țȒπωȞ țαȚ πȜυȞIJȘȡȓωȞ, İȟİIJȐȗȠȞIJαȚ țαȚ αȞαπIJȪııİIJαȚ ȑȞα µȠȞIJȑȜȠ πȠυ πİȡȚȑχİȚ ȩȜİȢ IJȚȢ παȡαπȐȞω µİIJαȕȜȘIJȑȢ. ΕȟİIJȐȗİIJαȚ İπȓıȘȢ țαȚ IJȠ İπȓπİįȠ İȞȘµȑȡωıȘȢ țαȚ İπȚµȩȡφωıȘȢ IJωȞ țαIJαȞαȜωIJȫȞ ıİ șȑµαIJα ȞİȡȠȪ țαȚ πİȡȚȕαȜȜȠȞIJȚțȐ ȗȘIJȒµαIJα, ȠȚ αȞIJȚįȡȐıİȚȢ ıİ αȜȜαȖȑȢ IJȘȢ IJȚµȒȢ IJȠυ ȞİȡȠȪ țαȚ Ș πȡȠșυµȓα IJωȞ țαIJαȞαȜωIJȫȞ Ȟα ıυµȕȐȜȜȠυȞ ȠȚțȠȞȠµȚțȐ ıIJȘ ȕİȜIJȓωıȘ IJωȞ υπȘȡİıȚȫȞ IJȘȢ ΕȊΑΘ. PROTECTION AND RESTORATION OF THE ENVIRONMENT VII – MYKONOS2004 PROTECTION AND RESTORATION OF THE ENVIRONMENT VII – MYKONOS2004 PROTECTION AND RESTORATION OF THE ENVIRONMENT VII WATER RESOURCES MANAGEMENT – ENVIRONMENTAL FLUID MECHANICS I