Water purification is the process of removing contaminants from water. One reason is to make it safe for humans to consume. Another is industrial use such as cleaning and cooling microchips during manufacturing. Unclean water is not only harmful to your health but equally damaging for the plumbing, home appliances, kitchen, washroom, and everything. According to a 2007 World Health Organization (WHO) report, 1.1 billion people do not have access to clean drinking water.;)