Toxicity of Flouride and Chromate ions is well known,causing Fluorosis and Cancer respectively. Arsenic , mercury, lead and cadmium are highly toxic even at low levels. Zn( ll) is substituted in metallo enzymes by cadmium. Toxic As ( lll) inhibits enzyme action. Mercury is responsible for Minimata disease while lead poisoning occurs due to its presence at high levels in food and water.Developing country like. India needs cheap water treatment methods which are sludge free and adsorption has an edge over all other techniques Like .Biosorption and Low cost adsorbents prepared from waste organic matter , Tree leaves, Bark, Sawdust ,Rice husk , coal ,Flyash have been tested for removal of these toxic anions and cations from water It has long been known that many biological materials will accumulate metals This phenomenon tends to exacerberate the environmental impact of various metals that are released in the environment because they become concentrated in the flora and \or fauna and ultimately get into the food chain . How ever , the same phenomena potentially can be used in a controlled environment to remove dissolved metal from processing streams either for recovery of valuable resources or to remove pollutants .This paper explores Toxic metal removal by Biosorption