Figure 3 shows the chart of gross alpha and beta
radioactivity of well water samples for Dutse town. It was
observed that Jigawa sarki, Mopol base, Takur site,
Dasina and Fagoji 2 had values of 0.834, 0.55, 0.884,
0.551 and 1.08 Bq/l respectively exceeding the maximum
contamination level set by WHO of 0.5 Bq/l for alpha
activity in drinking water. The maximum and minimum
values recorded were 1.081 and 0.003 Bq/l respectively.