One of the
more commonly known heavy metals is lead. It is an element that is present
in many commonly used products like gasoline, insecticides, and car batteries.
Human activity introduces lead into the environment where it resists
environmental degradation. This element is toxic to most organisms. Once introduced
to the body, lead stays and accumulates causing serious system malfunctions
and occasionally death. The highest lead levels were recorded at site 1, possibly because it is close to vehicular traffic on the main road.