Leaves and their ashes of Cassia auriculata, Celastrus paniculata and Carmona retusa are identified to have tendency of sorption towards Ammonia. Physico-chemical parameters such as pH, time of equilibration and sorbent concentration have been optimized for the maximum removal of Ammonia from polluted waters. More than 86.0% of Ammonia extraction is noted from simulated waters in all these sorbents at optimum conditions of extraction. Anions like Chlorides, Fluorides, Sulphate, Phosphate and Carbonates have marginal effect on the extraction while Cations like Ca2+, Mg2+, Cu2+, Zn2+and Ni2+ have interfered to some extent. The methodologies developed are successfully applied to samples collected from industrial effluents and naturally polluted lakes.