Cadmium and its compounds may travel through soil, but its mobility depends on several factors such as pH and amount of organic matter which will vary depending on the local environment. Generally cadmium binds strongly to organic matter where it will be immobile in soil and be taken up by plant life, eventually entering the food supply. Leafy vegetables like cauliflower, cabbage, spinach, etc., grow quite well in the presence of sewage water [12] whereas vegetables such as radish are sensi- tive to sewage water [13]. Vegetables grown by the use of sewage water contain many heavy metals, which cause serious health hazards to the community and animals as well [14,15]. This concern is of special importance, where un-treated sewage is applied for longer periods to grow vegetables in urban lands. Heavy metal bioaccu- mulation in the food chain can be especially highly dan- gerous to human health. These metals enter the human body mainly through two routes namely: inhalation and ingestion, and with ingestion being the main route of exposure to these elements in human population.