Along with sleep, diet and exercise, proper hydration is the foundation of a healthy lifestyle. And while they say you need ...

Reverse osmosis countertop systems remove bacteria, heavy metals, pesticides, chlorine byproducts, microplastics, lead, arsenic and fluoride from tap water.

Reverse osmosis systems are the most effective at eliminating contaminants, including PFAS. (Jennifer Lynn/WHYY) An under-the-sink reverse osmosis system costs about $200 to $300 up front, plus ...