Assessment of the ecological condition of the Ural river within the city of Orenburg

Abstract

The Ural river is one of the major rivers of Europe. The quality of surface waters of the Ural river basin was estimated within the city of Orenburg in three sections on a number of indicators: pH value, suspended solids, BOD5, petroleum, copper, total iron, sulfate ions, nitrite nitrogen, ammonium nitrogen, calcium, magnesium. To assess the level of contamination of water used a comprehensive performance – specific combinatorial index of water pollution, the ratio of the complexity of water pollution, class of water quality. It is shown that the water in the studied sections is characterized as "polluted" and "dirty". Microbiological analysis for E. coli showed the absence of this type of pollution.