With graphene based coatings provide highly efficient solutions to a variety of filtration needs. A single atomic layer of carbon, a clean water solution has emerged. Cutting edge water filtration systems are developed using graphene to remove highly hazardous contaminants that are otherwise not efficiently removed by previous technologies. The properties that make graphene unique to water treatments are large surface area, little or no cytotoxicity, large delocalized ∏ electrons and tunable chemical properties. Importantly, graphene can be easily reused for the purpose with minimal chemical alterations.