Assessment of water Quality parameters and trace metal content of drinking water sources in Minna metropolis, Niger State

Abstract

This study assessed the physico-chemical parameters and heavy metal concentration of tap and borehole waters in Minna metropolis. The experiment lasted over a period of three months, from May to July 2012. Six (6) locations were identified within Minna metropolis: Bosso, Kpakungu, Chanchaga, Mobil, Maitumbi, and Tunga where samples were randomly taken once every month. Hydrogen irons concentration, chloride, Sodium and potassium were determined by the method of American Public Health Association (1995), while temperature was measured with thermometer. Air and water temperatures were determined in situ, while Hydrogen iron concentration (pH), Ionic conductivity, Alkalinity, Hardness, Chloride, Sodium, Potassium and heavy metal concentration, Copper, Zinc, Iron and Lead were determined in the laboratory. The parameters measured showed marked variation across months and locations. Mean values of physico-chemical and concentration of heavy metals in tap and borehole water variables studied showed that parameters measured fell within the recommended ranges for aquaculture and drinking water. Water temperature showed no significant difference (p<0.05) amongst the months. The physico-chemical parameters assessed, indicated that most of the parameters fell within standard set by the Federal Ministry of environment. Comparison between tap and borehole waters of each location in Minna metropolis did not show significant difference in the temperatures of the locations (p>0.05). However, significant difference was observed in conductivity of the various locations (p<0.05)