Analysis of seven inorganic anions including Fluoride, Chloride, Nitrite, Bromide, Nitrate, phosphate and Sulfate were done in two sets of 10 brands of mineral bottled waters available in Iran using ion chromatography (IC). Two samples of each mark selected from different times of production, one in autumn and another in winter 2010. The obtained concentrations compared with the values on the labels by T-test. The means of difference between seasons and marks investigated using two-way analysis of variance (ANOVA). The mean Fluoride, Chloride, Nitrite, Bromide, Nitrate, phosphate and Sulfate content of the samples were 0.16, 20.63, ND, ND, 3.05, ND, and 24.43 (mg/L), respectively. Results of these determinations generally show a low content of anions in samples. All water samples were within the acceptable levels of the World Health Organization (WHO) guidelines and were lower than maximum contaminant levels (MCL) established by the United States Environmental Protection Agency (USEPA). Comparison of label values with our experiments showed that 11 label values had meaningful difference with ours. ANOVA of experimental results of different season samples shows no difference in ion content while the different brand analysis led to meaningful difference in the ion content of samples.

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