water quality and corrosion potential in water distribution system of shadegan city, khuzestan, iran

based on langelier, corrosion index of water in the distribution system was balanced. shadegan is a city and the capital of shadegan county in khuzestan province, iran. it has an area of 3197 m2 and located 84 km south of ahvaz. water distribution system serves 70,000 people in the city and the total consumed drinking water is 28525 m3per day (3,4).this descriptive, cross sectional study examined water quality of shadegan distribution system and its corrosion potential. in this study, eight water distribution stations were selected and samples were taken and examined in a five-year period from 2007 to 2011. standard methods were performed to examine all the parameters. sculler classification method was used to classify chemical water quality. all the water quality parameters were compared with the iranian national standards for drinking water. the results indicated that the highest level of pollution occurred in autumn. residual in 97% of samples were 0.2 to 0.8 mg/l. wilcox water quality classification was c2s4. electrical conductivity (ec) was 3019 µs/cm, and 2.9% of all the samples for fecal coliforms were positive.