Measurement of water quality potential of Jajroud river in Pardis city

Jajroud River is located in Pardis city in the east of Tehran. The purpose of this study is to determine the amount of water pollution in this river For this purpose, 15 samples of water were collected in early July 1397. Water samples were then analyzed to determine the concentrations of Fe, Cr, Cd, Zn, Pb, Cu, Co, Hg, As and Mn. The values ​​of cation and anion, TDS, pH, EC, COD, BOD, salinity, DO, NTU, gastrointestinal coliform and total coliform were measured in water samples. The reason for these measurements is to determine the quality of river water in terms of its physical and chemical variables. The average pH in surface water samples is 7.703, which indicates the alkaline nature of water samples. The high electrical conductivity of the Jajroud River is due to agricultural, horticultural and residential activities. High TDS indicates that the nitrate in the water is very high. Decreasing trend is the average concentration of the main cations in the water samples of Jajrud River as magnesium, potassium, sodium, calcium, and the order of the concentration of anions in surface water samples as chlorine, sulfate, phosphate, nitrate, bicarbonate. The result of ion distribution in the piper diagram indicates that the water type of anions is of sulfated type and is located in the chloride facies. And the type of water in sodium-potassium cations is in the magnesic facies.