DISSOLVED OXYGEN CONTENT AND CHLORIDE ION IN SURFACE WATER

Water is a renewable, vulnerable and limited natural source, a life-indispensable substance for society, a raw material for productive activities, a source of energy and a transport path, a determining factor in maintaining an ecological balance. Sweet surface waters are the majority of liquid fresh water. The flowing waters are characterized by a series of physical and chemical indicators, including dissolved oxygen and chloride ion. The annual evolution of these parameters was determined for the Crisul Repede River for over two years.