How far are we from health?

If it only refers to water, it is completely achievable at the current level, such as distilled water; But when it comes to healthy water, natural mineral water rich in minerals is still highly respected. However, with the process of urbanization, backward and heavily polluted people have moved to suburbs or villages, and these places are often the source of our domestic water, and there must be pollution! At present, the tap water in the city is treated by water plants, which is not healthy, but the harm should be negligible, so it is no problem to ensure our normal life!