The first round of RBMP preparation, in particular, was carried out without any additional resources from the Italian central government. Its main river channel is Italy’s longest (650 km) and its level of pollution discharge is the highest. The river basin district includes seven regions and one autonomous province (Aosta Valley, Piedmont, Lombardia, Liguria, Emilia-Romagna, Veneto, Toscana and Trento), with a total population of about 17 million.