Either send your water in to a certified lab or purchase a water test kit and do it in your home. We live in a toxic environment. Many people have health challenges such as allergies. It is wise to use an air purifier as a tool to enhance your life and help you feel better. Remember there are really two categories of air cleaners.
Examples are carbon, hepa.
It all depends again on your situation. We carry different kinds of air purifiers and we are in the process of adding more. Take a look at our listings and decide. E lectro M agnetic F requencies - these vibrations or waves have been proven to cause disruptions in ones health. There is much controversy in this subject.