In the last few decades more and more people have moved into cities. The result is that this creates pressure on the water resources of the city and makes it ever more difficult to provide safe and clean drinking water for the population. In older cities, old piping systems can contain contaminants such as lead or arsenic which are very bad for you. It is difficult for water departments to replace a lot of these older pipes or even to identify where they are, so there is always a risk of contamination. Ro Water systems installed in the home or workplace ensure that safe drinking water is always available without the need for boiling it first.