Why is tap water the best water?

There is no scientific evidence to support the claim that tap water is the best water. The quality of tap water can vary depending on the location and source of the water, as well as the treatment processes that are used. Some tap water may contain contaminants such as lead, bacteria, or other chemicals, which can make it unsafe to drink. It is always important to test your tap water to make sure that it is safe to drink before consuming it.