Aim of this Decree is the implementation of paragraphs 1 and 2 of article 4 to Ministerial Decree No. 16190/1335/1997, in compliance with the provisions of paragraphs 1 and 2 respectively of article 3 to Council Directive 91/676/EEC. It also aims at amending the above-mentioned Decree in such a way that the protection of waters can be effectively achieved: a) by identifying those water basins that are susceptible to nitrate pollution of agricultural origin and classify them as “vulnerable”, and b) by simplifying the procedures pursuant to article 5 of Decree No. 16190/1335/1997.