Corrosion and scaling potential of the potable water in villages based on langelier saturation index, ryznar stability index, larson ratio, and saturation level

Corrosion and scaling are of the most important properties of potable water and can affect the public health and the economy of water industry. This study was conducted to evaluate the corrosion and scaling potential of potable water of villages covered by in Saqqez, city, Kurdistan province, Iran. In this descriptive study, 142 samples of water were collected from different parts of the distribution network of the village. The samples were analyzed in terms of certain physical and chemical parameters. The results were compared with the qualitative standards of potable water, and corrosion and scaling indices, including langelier saturation index (LSI), ryznar stability index (RSI), larson ratio (LR), and saturation level (SL) were calculated. All the measured parameters were in the range of national and international standards. Biennial mean of LSI, RSI, LR, and SL comprised 0.73, 6.51, .074, and 1.96, respectively. According to the results, the studied potable water was at the status of scaling in terms of LSI and SL, at the status of balanced in terms of RSI, and at the status of corrosion in terms of LR. Frequency distribution of these indices in the studied duration was also performed. In general, it could be argued that the village’s potable water was at an acceptable level of corrosion and scaling. However, considering the significant annual changes in the indices, it is recommended to monitor the water every year in terms of corrosion and scaling.