Table 3.

Comparison of average of heavy metals concentration in upstream and downstream of Tembi River with guideline for water (mg/L) [10–13].

Heavy metals	Cd		Cr		Cu		Fe		Mn		Ni		Pb		Zn
sampling point	1	2	1	2	1	2	1	2	1	2	1	2	1	2	1	2
Average	0.17	0.25	0.19	0.29	0.47	0.57	0.56	0.96	0.45	0.94	0.48	0.68	1.13	1.4	0.2	0.35
Drinking water standards	0.005		0.1		1.3		0.3		0.05		—		0.00		5.00
Irrigation water standards	0.01		0.1		0.2		—		2.00		0.2		5.00		2.00
Aquatic life standards	0.01		0.05		0.05		—		0.1		—		0.05		<0.1
Surface water standards	0.01		0.16		—		—		0.1		0.144		0.005		—

1: upstream; 2: downstream.