Table 1: Heterotrophic bacterial count (CFU/ml) of bottled water of different brands.

Brand Code	No. of Samples	Mean±SD	Minimum	Maximum
1	40	14483.0±36237.3	62.0	1.70×105
2	40	9489.4±12667.2	130.0	5.80×104
3	40	4730±8911.0	134.0	5.60×104
4	40	5233.8±13372.0	100.0	8.20×104
5	40	10752.7±29486.2	337.0	1.80×105
6	40	10443.2±17442.0	< 1.0	9.50×104
7	40	2568.2±3414.6	<1.0	1.70×104
8	40	18860.8±42351.9	153.0	2.00×105
9	40	11397.9±24324.7	95.0	1.50×105
10	40	11825.5±19704.6	424.0	1.00×105
Total	400	9974.43±23855.24	<1.0	2.00×105