Thirty-five metals pose a threat to human health, 23 of which are heavy metals [1]. Studies report various effects of heavy metals in drinking water [2,3]. According to the International Agency for Research on Cancer (IARC), inorganic As and Cd are classified as human carcinogens [4]. Heavy metal toxicity is an important consideration in medical workups, at very high levels, most heavy metals can cause health problems for which no cause or solution has been found. Heavy metals are continuously released into the terrestrial environment by natural sources and human activities, accumulate in the environment and subsequently contaminate the food chain.