عنوان مقاله [English]
In order to studing the water quality of Pireghar river, Chaharmahal & Bakhtiari Province, that plays an important role in the main water supply for urban, rural, agriculture and aquaculture, water samples were collected from 5 stations along the river in February 2016 to measure physical and chemical parameters (pH, temperature, turbidity, oxygen biochemical demand, chemical oxygen demand, dissolved oxygen, conductivity, nitrate and phosphate, total suspended solids, total solids) and microbial parameters (total coliform, fecal and heterotrophic bacteria). Sampling methods and analysing was performed according to Standard Methods for the Examination of Water and Wastewater, American Public Health Association. According to the first European standard of the World Health Organization, the degree of bacterial contamination of the river, in comparison with the amount of total coliform was in the third group (ie pollution that be eliminated by costly methods) and in comparison with the amount of fecal coliform was in the first group. The results showed that water quality parameters of river according to the Aquatic standards, Environmental Protection Agency standard, the World Health Organization Institute of Standards and Industrial Research of Iran were in optimum state.