It won't make any difference. As an out-and-out rural person, I basically drink well water directly at home. My family has been like this for generations, and I often drink well water and mountain spring water directly, but I haven't found any effect. Another academic basis is that mountain spring water is rich in minerals, which is very beneficial to human body and can supplement various trace elements needed by human body.

Our village is in a deep forest, and the nearest city or industrial park is more than 20 kilometers away, so I can be sure that the water here is not polluted at all. Now many city people drive to our place to drink water.

Well water and mountain spring water mentioned here are absolutely not polluted. If we consider the well water and mountain spring water that may be polluted, it will definitely have an impact on the human body. When you want to drink well water and mountain spring water directly, you must know whether there are any places nearby that produce harmful substances, such as some factories that emit harmful substances, or whether there is a tree called eucalyptus.

Now, with the rapid development of society, many factories have been built in many places, and these factories are likely to emit some harmful substances to pollute well water and mountain spring water. In addition, the water in those places where eucalyptus is planted cannot be directly drunk. Eucalyptus will emit a lot of harmful substances, which will be mixed with rainwater when it rains, polluting water sources.

Now, if you are not sure whether well water and mountain spring water are polluted, you must boil them before drinking. It's best to put some tea, because tea can adsorb many harmful substances, so drinking tea often is also a very healthy habit.