Water (H2O) is essential to life and is ubiquitous; found even on planets, asteroids, and comets. It is a deceptively simple but very complex entity with many facets. Many people in developed countries consider access to quantities of drinkable (potable) and other water to be a given and at a low cost. The United Nations says that access to sufficient, safe water is a human right, but you get what you pay for. Access to universal assured safe drinking water has existed for only about 120 years with the development of microbiology to test for pathogens and engineering for filtration and disinfection water treatment.
Water (H2O) is essential to life and is ubiquitous; found even on planets, asteroids, and comets. It is a deceptively simple but very complex entity with many facets. Many people in developed countries consider access to quantities of drinkable (potable) and other water to be a given and at a low cost. The United Nations says that access to sufficient, safe water is a human right, but you get what you pay for. Access to universal assured safe drinking water has existed for only about 120 years with the development of microbiology to test for pathogens and engineering for filtration and disinfection water treatment.