Table 6.

The Pearson correlation test for the mean of each heavy metal in the water samples.

Metal	Pb	Ni	Mn	Fe	Co	Cu	Zn	Cd	Cr
Pb	1
Ni	0.8788∗∗	1
Mn	0.8080∗	0.9552∗∗	1
Fe	0.584	0.682	0.7018∗	1
Co	0.5325	0.7683∗	0.8378∗∗	0.4771	1
Cu	0.7522∗	0.4647	0.5184	0.2253	0.2843	1
Zn	0.7949∗	0.7052∗	0.7702∗	0.517	0.4808	0.8658∗∗	1
Cd	0.2976	0.1707	0.1854	-0.4253	0.2625	0.607	0.478	1
Cr	0.7464∗	0.8990∗∗	0.9438∗∗	0.6471	0.6868∗	0.5133	0.8326 ∗	0.2462	1

^∗ indicates a significant correlation at p=0.05, and ^∗∗ indicates a significant correlation at p=0.01.