Order No. 50/2005 instituting several programmes for improving water quality standards.
This Order, composed of 4 articles and 17 Annexes, approves 15 programmes aimed at reducing and controlling some dangerous substances present in water resources listed in the Annexes. For the substances not listed in the afore said Annexes, the Order recalls to the provisions set under Decree-Law No. 236/98 establishing water quality standards.