“…The water quality of these tributaries is influenced by the mining wastewaters originated from the Borşa mining perimeter (Cornu Nedeii, Dealul Negru, Burloaia, Gura Băii, Toroiaga mining exploitations), as well as from wastewaters unpurified with sediments and heavy metals from mining waste dumps and Colbu, D1, D2, D3 tailing ponds, and Baia Borșa ore Processing Plants, respectively (NCPBM Remin SA, 2014). Moreover, in March 2000, the failure of Novăț Roșu tailling pond generated about 100000 m 3 of contaminated water with cyanide and heavy metals and about 20000 tonnes of mineral-rich solid waste which flowed into the Novăt Roșu River and farther (Bird, et al, 2008;Macklin, et al, 2003).…”