Summary: How does my water filter work? What can I do to purify water in an emergency? Learn about physical filtration, chemical filtration, and more. Read the transcript at http://www.quickanddirtytips.com/education/science/how-do-water-purifiers-work Check out all the Quick and Dirty Tips shows: www.quickanddirtytips.com/podcasts FOLLOW EVERYDAY EINSTEIN Facebook: https://www.facebook.com/qdteinstein Twitter: https://twitter.com/qdteinstein