fa بررسی پتانسیل خورندگی و رسوب گذاری آب شرب روستاهای تحت پوشش شرکت آبفار شهرستان سقز براساس شاخص های لانژلیه، رایزنر، نسبت لارسون و سطح اشباع ● Psychosocial Health مقاله اصيل پژوهشي Orginal Article <p>Abstract Background: corrosion and scaling are of the most important characteristics of drinking water, affecting public health and water industry economy. The aim of the present study was to evaluate the corrosion and scaling potential of potable water supplied by Saqqez Rural Water and Wastewater Company. Materials and Methods: this was a descriptive study conducted on 142 samples taken from different parts of the distribution network during 2011-2012. All samples were analyzed for required physical and chemical parameters. The obtained results were compared with water quality standards and then, corrosion and scaling indices including Langelier Saturation Index (LSI), Ryznar Stability Index (RSI), Larson Ratio (LR), and Saturation Level (SL) were calculated. Results: all parameters were below the allowable limits determined by national and international qualitative drinking water standards. Biennial average of 0.73, 6.51, 0.74, and 1.96 were calculated for LSI, RSI, LR, and SL, respectively. Accordingly, potable water of the surveyed region was evaluated to be scaling based on LSI and SL, stable based on RSI, and corrosive based on LR. Finally, frequency distribution of indices during the surveyed period was reported. Conclusion: potable water of the region was in an acceptable level in terms of corrosion and scaling potential. However, considering significant differences between values of indices in a year to another year, annual survey of corrosion and scaling potential of regional potable water is strongly recommended Keywords: corrosion, scaling, water industry, public health</p> <p>Abstract Background: corrosion and scaling are of the most important characteristics of drinking water, affecting public health and water industry economy. The aim of the present study was to evaluate the corrosion and scaling potential of potable water supplied by Saqqez Rural Water and Wastewater Company. Materials and Methods: this was a descriptive study conducted on 142 samples taken from different parts of the distribution network during 2011-2012. All samples were analyzed for required physical and chemical parameters. The obtained results were compared with water quality standards and then, corrosion and scaling indices including Langelier Saturation Index (LSI), Ryznar Stability Index (RSI), Larson Ratio (LR), and Saturation Level (SL) were calculated. Results: all parameters were below the allowable limits determined by national and international qualitative drinking water standards. Biennial average of 0.73, 6.51, 0.74, and 1.96 were calculated for LSI, RSI, LR, and SL, respectively. Accordingly, potable water of the surveyed region was evaluated to be scaling based on LSI and SL, stable based on RSI, and corrosive based on LR. Finally, frequency distribution of indices during the surveyed period was reported. Conclusion: potable water of the region was in an acceptable level in terms of corrosion and scaling potential. However, considering significant differences between values of indices in a year to another year, annual survey of corrosion and scaling potential of regional potable water is strongly recommended.</p> خورندگی, رسوب گذاری, صنعت آب, سلامت جامعه Keywords: corrosion, scaling, water industry, public health 45 52 http://jrh.gmu.ac.ir/browse.php?a_code=A-10-548-1&slc_lang=fa&sid=1 Mohammad Hashemifar محمد هاشمی فر mamad1104@yahoo.com 100319475328460012101 100319475328460012101 No Lorestan University of Medical Sciences, Lorestan, Mojtaba Davoudi مجتبی داودی davoudi85@gmail.com 100319475328460012102 100319475328460012102 Yes Torbat Heydariyeh University of Medical Sciences Sedigh Mohammadzadeh صدیق محمدزاده mamad1104@yahoo.com 100319475328460012103 100319475328460012103 No Islamic Azad University, Mahabad branch, Lorestan Nazila Nilufari نازیلا نیلوفری 100319475328460012104 100319475328460012104 No University of Medical Sciences, Urmia Mohammad Khoshgoftar محمد خوشگفتار mohammadkhoshgoftar@yahoo.com 100319475328460012105 100319475328460012105 No Lorestan University of Medical Sciences, Lorestan,