During 2003-2008 and in 2014 the monitoring of the Ciobănuş, Uz and Slănic rivers, important tributaries of the Trotuş River, was carried out. Variations in water physico-chemical indicators (thermal regime and pH oxygen regime, nutrients, salinity, toxic pollutants and other relevant chemical indicators) have been taken into account in the study sections at the time of collection, according to ORDIN No. 161 of 16.02.2006 and some assessments have been made on the ecological state of the rivers. Water quality in all collection sections was kept clean (Class II quality) as a result of the legislative measures that have been taken on the restoration and protection of aquatic ecosystems.
