Municipalities across the U.S. have been safely adding fluoride to their tap water for decades, and reams of data prove the mineral has worked wonders in strengthening enamel and preventing tooth ...

Testing and treating water for PFAS. In 1972, the Environmental Protection Agency found chemical companies were discharging industrial waste into the Mississippi River, which Louisiana residents ...

50 years ago, the Safe Drinking Water Act was signed into law. But from factory farms to microplastics to spending cuts, we still face major threats to this essential resource. 50 years ago, the Safe ...

Fortunately, most drinking water is safe to drink. Here are a few contaminants to look out for, along with tips to test for and treat them. John Carlsen has more than a decade of experience testing ...