Evaluation of Chemical and Microbiological Quality in 21 Brands of Iranian Bottled Drinking Waters in 2012: A Comparison Study on Label and Real Contents

Table 2

Ranges, mean, and standard deviations of results compared to water quality guidelines *.

Parameter	Ranges	Mean ± SD	Bottled mineral water quality guidelines [21]
K^+	(−0.1)–(4.7)	1.13 ± 1.06 mg/L	0.7 mg/L
Cl^−	(140.15)–(0)	16.39 ± 31.97 mg/L	400 mg/L
F^−	(5)–(0)	—	1–1.5
pH	(7.3)–(5.1)	6.60 ± 0.66 mg/L	7.75
Ca^2+	(49.70)–(11.22)	28.35 ± 10.34	250 mg/L
Mg^2+	(189.58)–(38.40)	86.58 ± 33.21 mg/L	50 mg/L
SO4^2−	(61.7)–(0.2)	24.17 ± 17.30 mg/L	400 mg/L
HPC	(79667)–(0) cfu/mL	16855.24 ± 25603.213 cfu/mL	500** cfu/mL [22]

 *All units are mg/L except HPC that is as cfu/mL.
**Due to lack of bottled mineral water quality guidelines, the drinking water quality guideline was used.