Think of TDS as the invisible stuff your water is secretly carrying. It’s a mix of minerals, salts, and tiny bits of organic matter that dissolved into the water as it traveled through rocks and pipes. It’s like your water went to a party and came home with a bunch of invisible glitter.
Some of those solids are totally fine—hello, calcium and magnesium! But too many can make your water taste like a dusty penny or leave white spots on your glasses. So, measuring TDS is basically checking your water’s “baggage claim.”
