Kurdistan University of Medical Sciences Journal of Advances in Environmental Health Research 2676-3478 9 3 2021 07 01 Scaling and Corrosion Potential in Drinking Water Distribution Systems of Meshginshahr City, Iran Using Langelier Saturation Index and Ryznar Stability Index 201 208 133304 10.32598/JAEHR.9.3.1210 EN Kamal Hasani Students Research Committee, Ardabil University of Medical Sciences, Ardabil, Iran. Department of Environmental Health Engineering, School of Public Health, Ardabil University of Medical Sciences, Ardabil, Iran. 0000-0002-4110-7563 Hadi Sadeghi Department of Environmental Health Engineering, School of Public Health, Ardabil University of Medical Sciences, Ardabil, Iran. 0000-0001-7975-411X Abdollah Dargahi Social Determinants of Health Research Center, Ardabil University of Medical Sciences, Ardabil, Iran. 0000-0003-2929-2556 Mehdi Vosoughi Department of Environmental Health Engineering, School of Public Health, Ardabil University of Medical Sciences, Ardabil, Iran. Social Determinants of Health Research Center, Ardabil University of Medical Sciences, Ardabil, Iran. 0000-0001-7294-4877 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. Department of Environmental Health Engineering, School of Public Health, Ardabil University of Medical Sciences, Ardabil, Iran. Journal Article 2021 02 07 <strong>Background:</strong> 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.<br /><strong>Methods: </strong>This descriptive cross-sectional study was conducted during the two seasons (summer and winter) in 2019. A total of 20 water samples, which were obtained by averaging 100 samples, were analyzed to determine the corrosion and scaling potential using Langelier Saturation Index and Ryznar Stability Index.<br /><strong>Results:</strong> The results showed that the annual average of LSI and RSI were -1.34 and 10.03, respectively, indicating that the drinking water of Meshginshahr was corrosive and scale-forming.<br /><strong>Conclusion:</strong> 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. https://jaehr.muk.ac.ir/article_133304_2593aa4358c7ae7464a79af460d4b6f0.pdf