Water purification is the process of extracting undesirable chemicals, biological impurities, suspended solids and gases from water. Most water is disinfected for human use but water is not only used for human consumption its utility is further distributed into medical, pharmacological, chemical and industrial applications. Hazardous materials released of improper disposal of heavy industrial wastage are benefitting the growth of water purifier market. The methods adopted to comprise the process such as filtration, sedimentation and distillation. Biological processes such as slow sand filtration are also used to provide pure water to people.