Heavy metals	Fe	Cu	Co	Zn	Mn	Pb	Cr	Cd
Sample	Fe	Cu	Co	Zn	Mn	Pb	Cr	Cd
1	0.551	0.021	0.01	0.028	0.047	0.005	0.002	0.003
2	0.55	0.02	0.014	0.035	0.052	absent	0.002	0.004
3	0.595	0.023	0.016	0.071	0.057	absent	0.002	0.009
4	0.569	0.024	0.015	0.05	0.056	absent	0.003	0.006
5	0.582	0.023	0.016	0.059	0.058	0.001	0.004	0.007
Average	0.569 ± 0.020	0.022 ± 0.002	0.014 ± 0.003	0.049 ± 0.017	0.054 ± 0.005	0.003± 0.002	0.003± 0.001	0.006 ± 0.002
WHO standards	0. 5 - 5.0	2	1	0.4	0.05	0.01	0.01	0.003