This Order approves the action programme for the vulnerable zone No. 2 - quaternary groundwater reservoir of Aveiro. The aim of this Programme is to protect of waters against pollution caused by nitrates from agricultural sources and to avoid the freshwater pollution within the aforementioned zone, delimited by the National Highway 109, the railway Aveiro-Pampilhosa, the IP-1 and the railway Sernada do Vouga-Aveiro until the National Highway 109. It establishes maximum quantity of nitrogen or fe