Does ZeroWater make hard water soft?Updated 3 months ago

Yes — because ZeroWater removes the calcium and magnesium responsible for water hardness, filtering hard tap water through ZeroWater effectively gives you soft, mineral-free water.

Keep in mind that the harder your tap water, the higher its starting TDS (total dissolved solids) — and the more dissolved solids your filter has to remove, the faster it will use up its capacity. So if you have hard water, expect your filter to need replacing sooner than it would with softer tap water.

For the full explanation of what's removed and why, see "Do ZeroWater filters remove minerals from water?".