Environmental Systems Research

Table 3 Descriptive statistics of heavy metals concentrations in groundwater obtained from Ejisu-Juaben Municipality (n = 19)

From: Pollution evaluation, sources and risk assessment of heavy metals in hand-dug wells from Ejisu-Juaben Municipality, Ghana

	Min.	Max.	Mean	SD	Variance	WHO (2011)
Mn	0.005	0.020	0.012	0.006	0.000	0.5
Fe	0.002	0.568	0.166	0.149	0.022	0.3
Cu	0.003	0.019	0.010	0.005	0.000	2.0
Pb	0.000	0.040	0.010	0.011	0.000	0.01
Zn	0.000	0.047	0.014	0.012	0.000	3.0
Cd	0.000	0.002	0.000	0.001	0.000	0.003

All results are in mg/L
SD standard deviation

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