Table 4.

Pearson correlation coefficients calculated for the elements determined in the tap water sample from the Akaki-Kality Sub-City of Addis Ababa.

Element	Fe	Zn	Cu	Mn	Ni	Cr	Pb	As
Fe	1
Zn	0.176	1
Cu	-0.046	0.202	1
Mn	0.636∗	0.064	-0.058	1
Ni	-0.122	0.055	0.128	-0.160	1
Cr	-0.206	-0.071	-0.073	-0.271	0.682∗	1
Pb	-0.225	-0.039	-0.003	-0.321	0.610∗	0.722	1
As	-0.071	-0.022	0.023	-0.102	-0.216	-0.395	-0.090	1

^∗Correlation is significant at the 0.05 level.