IWA Publishing

Table 5

Heavy metal concentration in groundwater (all units are in mg/L)

Heavy metals	Minimum	Maximum	Mean	WHO (2008)
Cr⁶⁺	0.01	40.52	4.173	0.05
Fe	0.013	0.57	0.19	0.3
Cd	0.0001	0.004	0.001	0.01
Pb	0.0001	0.053	0.006	0.1

Heavy metals	Minimum	Maximum	Mean	WHO (2008)
Cr⁶⁺	0.01	40.52	4.173	0.05
Fe	0.013	0.57	0.19	0.3
Cd	0.0001	0.004	0.001	0.01
Pb	0.0001	0.053	0.006	0.1