All activated carbon s contain micropores, mesopores and macropores within their structure but the relative proportions vary considerably according to the raw material. Most of the developed nations have facilities to activate coconut shell, wood and coal. Third world countries have recently entered the industry and concentrate on readily available local raw materials such as wood and coconut shell. The significant feature of activated carbon is that it makes a unique and a particularly economic adsorbent is that it can be produced from waste materials such as coconut shell. Hence, the objective of the investigation is to prepare the activated carbon using coconut shell and to treat the polluted water and domestic waste water using activated carbon