India is a developing country and it faces many types of problem in which main problem is water resources. This topic has been carried for improve the quality of water that we use for drinking. To pure the water we use some natural resources like plant extracts of Moringa oleifera, Arachis hypogaea [peanuts] Vigna unguiculata [cowpeas], Vigna mungo [ured] and Zea mays [corn]. When all of these plants are examined on water, result showed the significant decreased in the reduction of micro counts up to 90%. Coagulation of the heavy metal like lead, copper, nickel etc. is also done by treatment of water with these natural extracts. Everything is useful in these plants because it has been examined that seeds and leaves were also more effective in clearing and in sedimentation of suspected organic and inorganic matter present in water samples. In treated water samples, total bacteria count was found 10 cfu / ml but in control water sample was found more then1000 cfu / ml. 90% of heavy metals were also removed in treated samples. This work evaluates the use of plants, which an economical and eco-friendly.