Do you really know what's in your tap water?
Find out by entering your zip code into EWG's Tap Water Database
As many as 63 million people — nearly a fifth of the United States — from rural central California to the boroughs of New York City, were exposed to potentially unsafe water more than once during the past decade (USAToday).
These water contaminants can lead to cancer, gastrointestinal diseases and developmental delays in children. Filtering tap water is becoming increasingly important for your health.