Tables 3e8 show the results obtained in this study for
Copper, Zinc and Lead respectively. These tables gives the
results of their concentration, absorbance, standard deviation
of absorbance, standard deviation of concentration and relative
standard of concentration of the three heavy metal in
ground water well water and borehole water measured by
calibration plot method was used for the analysis. For the
protection of human health, guide lines for the presence of
heavy metals in water have been set by different. International
organizations such as EPA, WHO and European Union
Commission,11 thus heavy metal have maximum permissible
level in water specified by these organizations. The maximum
contaminant level (MLC) is an enforceable standard set at a
numerical value with adequate margin of safety to ensure no
adverse affect on human health.
The three elements studied in this research were Copper,
Zinc and Lead has the maximum contamination levels of 0.5,
3.0 and 0.01 mg/L respectively.11 From the result obtained, the
minimum concentration of Copper detected in the water
samples for both borehole and well water was 0.00122 mg/L
with maximum concentration being 0.0252 mg/L