The results of the sea water analysis, made in the criteria prescribed by the European Union, show that the Adriatic Sea is of the highest quality, the only exception being several major seaports. Along Dubrovnik Region visitors will enjoy in the crystal clear sea and clean environment. The only exemption where swimming is not recommended are the port of Gruz and the Old Town harbor. Due to many ships and sewage water the sea quality in those areas must be improved before swimming can be recommended. The control measurements of the sea water quality around Dubrovnik is done yearly, before the tourist season. Unfortunately, there are no beaches around Dubrovnik that have yet received the Blue Flag award, an European award that recognizes beaches with high standards regarding both sea water quality and supporting facilities. The only received Blue Flags in Dubrovnik Region are held by the ACI marina Miho Pracat in Komolac, 6 km from Dubrovnik and the ACI marina on Korčula.