Presence of heavy metals in drinking water has lead to studies for developing methods to make water safe. Among other methods, biosorption of heavy metals by agricultural waste has gained popularity. Our study is inspired by the work of Gustavo Castro and colleagues who have successfully established the use of banana peel for removal of lead from waste water. In our finding at neutral pH also lead was biosorbed by fresh banana peel and water could be purified upto 83 % without any chemical treatment. 

 

This method may be applied household drinking water especially supplied to rural household where use of modern water purifying systems is yet not common. The method may be explored to develop more sensitive techniques.