...is also a key factor. The projectâs test sites were located in two main areas: two in the high Friuli Plain (north-eastern Italy) and one in the Po Valley. In the first area, one site was in the industrial zone of Ponte Rosso (Pordenone province), where a wetland receives treated industrial wastewater, and the other was in Mereto di Tomba (Udine province) and involved an innovative experimental ...