Beneath air, water is the most important substance for the life of all organisms including human beings. Water has unique chemical properties due to its polarity and hydrogen bonds which means it is able to dissolve, absorb, adsorb or suspend many different compounds. Thus in nature water is not pure as it acquires contaminants from its surrounding and those arising from humans and animals as well as other biological activities. Groundwater is a significant water resource in India for domestic, irrigation and industrial needs. More than 85 % of rural and 50 % of urban domestic water...