Assessment of Some Physicochemical Parameters and Heavy Metals in Hand-Dug Well Water Samples of Kafta Humera Woreda, Tigray, Ethiopia

Table 2

The heavy metal concentrations (mean ± SD, N = 3, mg/L) of hand-dug well water sources of Kafta Humera Woreda.

Heavy metals (mean ± SD)	Water sources				WHO [14]	ESA [15]
	Kunama Adigoshu	Hagere Selam	May Woyni	Habesha Adigoshu
Iron	0.97 ± 0.06	1.86 ± 0.24	0.33 ± 0.02	0.69 ± 0.08	0.3	0.3
Copper	BDL	BDL	BDL	BDL	0.5	2
Zinc	BDL	BDL	BDL	BDL	0.2	5
Manganese	BDL	BDL	BDL	BDL	0.5	0.5
Cadmium	BDL	BDL	BDL	BDL	0.01	0.01
Lead	BDL	BDL	BDL	BDL	0.01	0.01
Chromium	BDL	BDL	BDL	BDL	0.05	0.05

BDL: below detection limit; WHO: World Health Organization; ESA: Ethiopian Standard Agency.