Abstract: The purpose of this study was to investigate whether the level of inorganic chemical cadmium (Cd) in wells and boreholes water in Zaria is sufficient to affect the health of the inhabitants of the area under study. Sixty open wells and 5 boreholes were randomly selected from Zaria and environs. Water samples were collected from the open wells and boreholes using standard techniques. In the study, Cd concentrations of the samples was determined using standard procedures. WHO acceptable limit for drinking water was used in the evaluation. Result obtained shows that Cd concentrations ranged from <0.001 to 0.28 mg L-1 with 68% of the samples above the WHO water guideline. Most of the open wells and boreholes water studied were contaminated with abnormal concentration of cadmium sufficient enough to affect the health of the inhabitants of the area.