(Fig. 2). No study site was classified as low risk or safe. However, according
to the observed maximum levels, 15 sites (55.5%) were classified as
high risk, while 12 sampling sites were classified as intermediate risk
(45.5%) (Fig. 2). According to mean and maximum levels the direct consumption
of water from the rivers and streams without any treatment
(basic purification treatments) is not recommended as all sites exceed
the WHO guidelines.