Trace Elements Analysis in Drinking Water of Meghalaya by Using Graphite Furnace-Atomic Absorption Spectroscopy and in relation to Environmental and Health Issues

Table 2

Parameters analyzed in treated and untreated water.

Parameters for water analysis	Sample	East Khasi Hills	West Khasi Hills	Jaintia Hills
pH	Untreated water	6.80 ± 0.018	6.60 ± 0.031	6.10 ± 0.044
	Treated Water	7.50 ± 0.045	7.30 ± 0.028	7.10 ± 0.031
Turbidity NTU	Untreated water	64.24 ± 2.14	44.15 ± 5.18	59.80 ± 4.18
	Treated Water	10.25 ± 0.45	8.40 ± 0.18	12.16 ± 0.26
Conductivityat 25°C with 0.01 M	Untreated water	1.00 ± 0.088	1.20 ± 0.048	0.80 ± 0.018
	Treated Water	1.50 ± 0.020	1.80 ± 0.042	1.50 ± 0.025
NO3^− (mg/L)	Untreated water	0.03 ± 0.001	0.03 ± 0.005	0.04 ± 0.003
	Treated Water	0.01 ± 0.006	0.02 ± 0.005	0.02 ± 0.009
PO4^2− (mg/L)	Untreated water	0.55 ± 0.058	0.52 ± 0.018	0.25 ± 0.078
	Treated Water	0.09 ± 0.003	0.02 ± 0.002	0.01 ± 0.004

Results are mean ± SD of 25 observations each.