Kamal Hasani - Students Research Committee, Ardabil University of Medical Sciences, Ardabil, Iran.
Hadi Sadeghi - Department of Environmental Health Engineering, School of Public Health, Ardabil University of Medical Sciences, Ardabil, Iran.
Abdollah Dargahi - Social Determinants of Health Research Center, Ardabil University of Medical Sciences, Ardabil, Iran.
Mehdi Vosoughi - Department of Environmental Health Engineering, School of Public Health, Ardabil University of Medical Sciences, Ardabil, Iran.
Ahmad Mokhtari - Department of Environmental Health Engineering, School of Public Health, Ardabil University of Medical Sciences, Ardabil, Iran.
Maryam Pirasteh - Students Research Committee, Ardabil University of Medical Sciences, Ardabil, Iran.

Background: Corrosion and scaling are major problems in the drinking water facilities causing problems such as water loss, recued life of facilities, pipe punctures, clogging of pipes, and pressure loss in drinking water distribution system. This study aims to determine the corrosion and scaling potential in drinking water distribution system of Meshginshahr, Ardebil, Iran.Methods: This descriptive cross-sectional study was conducted during the two seasons (summer and winter) in ۲۰۱۹. A total of ۲۰ water samples, which were obtained by averaging ۱۰۰ samples, were analyzed to determine the corrosion and scaling potential using Langelier Saturation Index and Ryznar Stability Index.Results: The results showed that the annual average of LSI and RSI were -۱.۳۴ and ۱۰.۰۳, respectively, indicating that the drinking water of Meshginshahr was corrosive and scale-forming.Conclusion: Therefore, it is necessary to constantly evaluate the drinking water supply resources of this city and try to adjust the pH of water and control other factors affecting corrosion, including concentrations of chloride, dissolved oxygen, and sulfate.

corrosion, scaling, Drinking Water, Langelier saturation Index, Ryznar Stability Index, Meshginshahr