In the link below you can download the article entitled:
THE HISTORY OF DEROGATIONS FROM CONCENTRATION LIMITS OF POLLUTANTS IN DRINKING WATER IN ITALY AND PIEDMONT (Article 9, Directive 98/83/EC)
LA STORIA DELLE DEROGHE ALLE CONCENTRAZIONI DI INQUINANTI NELLE ACQUE POTABILI IN ITALIA ED IN PIEMONTE (art. 9, Direttiva 98/83/CE)