Inicio A History of Drinking Water A History of Drinking Water Posted: Wednesday, January 2, 2019 More than 1,000 years ago Egyptians were among the first people to document the methods for drinking water. Back then, the most common way to clean water was to boil it over a fire, or use the heat of the sun. Today, water treatment is far more advanced, regulated and transparent. Mesa Water completes over 30,000 water quality tests a year. Mesa Water has been committed to producing safe, reliable drinking water for its customers for more than 55 years. Our customers enjoy high quality water that meets or surpasses all state and federal drinking water standards.