Background and rationale
Background Water is an essential substance for the life of human beings on earth; however lack of clean and fresh water for use because of poor sanitation and lack of water purification systems causes the significant number of deaths. More than 800 million people do not have access to fresh drinking water as per the report by the Millennium Development Goals in 2012. The world’s population is growing at a faster rate. Statistics shows that by mid-century, nearly 2 billion people will not have access to safe drinking water (Schilling 2013). The growing population, changing industrial and agricultural ...