Chemical Evaluation of Trace Elements in Bottled Water

Table 2

Association between physical parameters (as per IBWA guideline), volume of bottled water, and season.

Sn	Volume (L)	Physical parameter	Monsoon season		Postmonsoon season		Permissible value as per IBWA guideline
			M ± SD	A	M ± SD	A
1	1	pH	5.94 ± 0.56		6.01 ± 0.65		6.5–8.5
	20		5.96 ± 0.54		5.88 ± 0.4
2	1	Electrical conductivity	56.24 ± 58.93	NA	61.44 ± 52.57	NA	NA
	20		69.48 ± 67.58		61.10 ± 62.34
3	1	Total dissolved solids	4.12 ± 3.48	NA	3.84 ± 3.42	NA	500
	20		5.28 ± 3.88		4.44 ± 4.01
4	1	Turbidity	0.38 ± 0.096	25	0.399 ± 0.121	25	0.5
	20		0.414 ± 0.257	25	0.42 ± 0.255	25

NA: value not available in guideline; M: mean; SD: standard deviation; A: acceptability. indicates guideline not enforceable by IBWA.