en تخصصي Special Original article Original article <p align="justify"><span style="font-family:times new roman;"><strong>Introduction: </strong>The increasing of population and limited drinking water resources has enhanced the necessity of using bottled water. Many people are now using bottled water because they believe it is a healthful alternative beverage to soft drinks or other bottled beverages. Therefore, the bottled water industry has grown immensely during the past decades. This descriptive cross-sectional study has investigated the quality of bottled water in market and factories of Hamadan province, Iran. </span></p> <p align="justify"><span style="font-family:times new roman;"><strong>Materials and methods: </strong>In total, 33 bottled water samples produced in the Hamadan province of Iran, were randomly collected in 2012. The evaluated parameters were nitrate, nitrite, turbidity, Na⁺, K⁺, pH, total coliforms and fecal coliforms. The data were analyzed by SPSS software. </span></p> <p align="justify"><span style="font-family:times new roman;"><strong>Results: </strong>All the samples meet standard regulations of national standards of Iran and the WHO guidelines. None of the samples, had coliforms or fecal coliforms. The mean values of nitrate, nitrite, turbidity, Na⁺, K⁺and pH parameters were 8.34 mg/l, 0.024 mg/l, 0.38 NTU, 9.36 mg/l, 0.36 mg/l and 8.34, respectively. </span></p> <p align="justify"><span style="font-family:times new roman;"><strong>Conclusion:</strong> We found that all measured parameters of bottled water in Hamadan province were within acceptable rang of the national and international standards, and consuming this kind of drinking water would not present any risk to the consumers&#39; health. </span></p> Drinking water, Quality control, Safety, Iran 21 24 http://jfqhc.ssu.ac.ir/browse.php?a_code=A-10-1-15&slc_lang=en&sid=1 I. Salehi No School of Allied Medical Sciences, Hamadan University of Medical Sciences, Hamadan, Iran M. Ghiasi No Deputy of Food and Drug, Hamadan University of Medical Sciences, Hamadan, Iran A.R Rahmani No Department of Environmental Health, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran M. Nouri Sepehr No Department of Environmental Health, School of Public Health, Alborz University of Medical Sciences, Karaj, Iran M. Kiamanesh No Deputy of Health, Hamadan University of Medical Sciences, Hamadan, Iran L. Rafati l.rafati@yahoo.com Yes Deputy of Health, Hamadan University of Medical Sciences, Hamadan, Iran