The influence of changes in season on heavy metal concentrations in rural groundwater of Benue State is
investigated in this study. Water samples were collected from 26 rural community boreholes and analyzed for
heavy metal concentrations as they affect the quality of drinking water based on the WHO standard and their
variability for both wet and dry seasons. The analyses were carried out as prescribed in the standard methods for
examination of water. The results of analyses show the mean values and CV% as follows: pH 7.55; 6.21% for
wet season and 8.89; 4.24% for dry season. 414 µS/cm; 137.58% for wet season and 272.13 µS/cm; 94.92% for
dry season; Fe 0.82 mg/L; 81.71% for wet season and 0.03 mg/L; 324% for dry season; Mn 0.73 mg/L; 52.05%
for wet season and 0.14 mg/L; 92% for dry season; Zn 0.10 mg/L; 140% for wet season and 0.13 mg/L; 130.76%
for dry season; Pb 0.74 mg/L; 75.68% for wet season and 0.04 mg/L; 170% for dry season; Cu 0.88 mg/L; 64.77%
for wet season and 0.00 mg/L; 60% for dry season. Apart from pH and Zn whose values were higher in the dry
season, other metals investigated had higher concentrations in the wet season. This implies that as climate
becomes either wetter or drier due to phenomenal changes concentrations of heavy metals are likely to respond
appropriately