Scaling and Corrosion Potential in Drinking Water Distribution Systems of Meshginshahr City, Iran Using Langelier Saturation Index and Ryznar Stability Index

Background: corrosion and scaling are major problems in the drinking water facilities causingproblems such as water loss, recued life of facilities, pipe punctures, clogging of pipes, andpressure loss in drinking water distribution system. this study aims to determine the corrosionand scaling potential in drinking water distribution system of meshginshahr, ardebil, iran.methods: this descriptive cross-sectional study was conducted during the two seasons (summerand 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 indexand ryznar stability index.results: 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.conclusion: therefore, it is necessary to constantly evaluate the drinking water supply resourcesof this city and try to adjust the ph of water and control other factors affecting corrosion, includingconcentrations of chloride, dissolved oxygen, and sulfate.