Water is one of those everyday things you don’t think much about — until suddenly, you do. Maybe it’s a strange metallic taste one morning, or the way your skin feels a little too tight after a shower, or...

There’s something oddly comforting about turning on the tap and knowing water will flow. It’s automatic. Expected. Trusted. But lately, maybe you’ve started noticing things—spots on dishes, itchy skin after showers, a metallic tang to your tea, or that...