Heavy metals	Fe	Cu	Co	Zn	Mn	Pb	Cr	Cd
Sample	Fe	Cu	Co	Zn	Mn	Pb	Cr	Cd
1	0.13	0.006	0.002	0.058	0.006	0.007	0.006	0.006
2	0.018	0.007	-	0.086	0.002	0.002	0.001	0.004
3	0.127	0.001	-	0.039	0.003	0.003	0.005	0.003
4	0.142	-	0.002	0.008	0.005	0.003	0.007	0.004
5	0.115	-	0.004	0.01	0.007	-	0.01	0.006
Average	0.114 ± 0.051	0.005 ± 0.003	0.003 ± 0.001	0.039 ± 0.033	0.005 ± 0.002	0.004 ± 0.002	0.006 ± 0.003	0.005 ± 0.001
±standard deviation	0.114 ± 0.051	0.005 ± 0.003	0.003 ± 0.001	0.039 ± 0.033	0.005 ± 0.002	0.004 ± 0.002	0.006 ± 0.003	0.005 ± 0.001
WHO standards	0.5 - 5.0	2	1	0.4	0.05	0.01	0.01	0.003