The healthiest water filtration system is the one that removes the most harmful contaminants and leaves in the healthiest minerals. Some water filtration systems remove beneficial minerals along with harmful contaminants, so it's important to research which system will be best for your specific needs. Reverse osmosis is a good option for people who are looking to remove harmful contaminants from their water, but it's important to supplement with minerals afterward because all of the beneficial minerals will be removed by the filter. Distillation is another option that removes all impurities from water, but it can be harsh on the body and may not be suitable for everyone.

There is no one healthiest water filtration system. Different people will have different preferences and needs. Some people may prefer a system that simply filters out chlorine and other chemicals, while others may prefer a system that also removes heavy metals and other toxins. It's important to consult with a qualified professional to determine which water filtration system would be best for you. Every home is unique, and the right filter for one person's home may not be the right filter for another person's home.