Abstract

Chemical parameters of water determine if it is suitable for drinking. Drinking water that does not meet the standards from physical and chemical parameters viewpoint can cause irrevocable damages to the public health. The present study is an attempt to analyze chemical parameters of drinking water of water system of Kermanshah city. The study was carried out as a descriptive cross-sectional study in 2013. Nine physical and chemical parameters were examined in 80 specimens randomly collected from 16 water facilities in Kermanshah City-Iran. The samples were analyzed through descriptive method and the obtained results were compared with Iran and WHO water standards using Schoeller Diagram. The results showed that the samples met the standards with regard to pH, nitrate, nitrite, fluoride, total hardiness, calcium, and magnesium. As to the rest of the parameters, TDS and residual chlorine were 6.3 and 62.5 higher than the standards respectively. In addition, according to the categories of the diagram, qualitative parameters of the samples was at good condition. As shown by the findings, most of the chemical parameters under consideration were at standard range (IRIRAN water standard 1053). The results also indicated necessity of extending a routine water quality survey system to ensure quality of drinking water. © 2017 Bulgarian Academy of Sciences, Union of Chemists in Bulgaria.