Abstract :
Water for many uses such as drinking, recreation, sanitation, hygiene, and industry, is a critical element for humanity to be able to survive on earth. Freshwater resources are limited and their quality is under the many threats caused by human being. More than 750 million of people all around the world is having problem to access the safe water. Diarrhea caused by drinking unsafe water kills approximately 840.000 people ever year and most of the cases are from rural areas. Water is also main source for many pathogenic organisms in developing regions. Even though many of the pathogens are easily control by standard chlorination, recontamination of water and resistance to chlorination are still a serious problems. While adequate water supplies from rich and clean resources for all humanity is the main objective, nowadays preventing water born diseases through better water sanitation and hygiene, increasing domestic water quality and service level, drinking commercially-bottled water filtered with certain type of systems are crucial
