Corncobs are agricultural wastes obtain in maize cultivation. It is less utilized part of the maize plant. Due to rigidity and their porous structure they can be used as an absorbent. Corncobs are available in large quantity, it may be burnt or given as food for animals. But if corncobs are burnt it causes air pollution which we already saw what happen in Delhi (Capital of India) and if corncobs are given as food to animals, they also not take it as it contains hemicellulose content in it and acts as an obstructing agent in the elementary canal of the animals. So, it is a good idea to use corncobs agricultural waste to treat wastewater. Sometimes they are thrown away but naturally, they take too much time to biodegrade. In this treatment no need of chemicals and electricity. The wastewater can be treated naturally using corn cobs as an absorbent. As corn cobs are cheap, this is more economical treatment. It is also easy and simple to operate. So, it can be adopted in villages also.