Brita filters use activated carbon and a small amount of ion-exchange resin. This combo is fantastic for removing chlorine, sediment, and that weird metallic taste from tap water. But it’s not a surgical tool—it catches some minerals, too.
Specifically, the ion-exchange resin swaps calcium and magnesium ions (the ones that make water “hard”) for sodium or potassium ions. So yes, it reduces those minerals, but it doesn’t strip your water to sterile nothingness like reverse osmosis does.
Think of it as a gentle “edit” rather than a full rewrite. You’re not drinking distilled water; you’re drinking tap water that’s been polished.
How Much Mineral Loss Are We Talking?
Research and Brita’s own specs show the reduction is modest. In most municipal water, calcium and magnesium levels drop by roughly 10% to 30%. That’s not a game-changer for your daily nutrition.
Consider this: you’d get more calcium from a single bite of cheese than from a week’s worth of filtered water. Unless you’re training for a triathlon and chugging gallons, the mineral loss is negligible for your health.
So, if you’re worried about “demineralized water” making your bones brittle—breathe. Your diet does the heavy lifting.
