Temporal Patterns of Quality Surface Water Changes

Abstract

The dynamics of hydrochemical parameters of surface waters of the upper, middle and lower reaches of the river is analyzed. Based on the analysis of temporal and spatial monitoring data, a comprehensive assessment of the environmental status of the waters of the Inhulets river (Ukraine) by hydrochemical indicators was carried out. The study performed a comparative analysis of river water quality assessment by different methods: an integrated assessment based on the calculation of water pollution indexes, pollution rate. A result of the evaluation of water quality in certain classes: in terms of ammonium ions and BOD5 ˗ III quality class, the water is slightly polluted; phosphate content ˗ V quality class, water is very low in the bottom; according to the content of suspended solids, in phosphates and BOD5 ˗ III class of water quality, water is polluted; by a concentration of chlorides ˗ V class of quality, degree of purity ÷ very dirty; the value of suspended solids and chlorides ˗ III class; in terms of sulfate content ˗ IV class. In general, the very excessive concentration of substances in the middle course remains stable, the environmental state is poor (quality class IV).

Keywords

• surface water quality
• water security
• level of pollution
• hydrochemical indicators
• resistance degree of pollution
• inhulets river