All sorts of nasties—lead, mercury, radium, nitrates, norovirus, agricultural runoff, PFAS, and more—can lurk in your water. No surprise, then, that about 40% of U.S. homes filter theirs. But the ...

Ever had that sip of water at 3 a.m.? Tastes good, feels good, right? What about taking a sip of water from a bottle, a fountain at a park, or a friend’s place? Have you ever noticed a different taste ...