Does this system remove calcium from water? Watts Pure H2O 2-stage Water Filtration System Under Counter

Question

Does this system remove calcium from water? Watts Pure H2O 2-stage Water Filtration System Under Counter

Our water has a ton of calcium that results in the white calcium deposits all over the faucet. Wondering if this system will help with that or if there is a better option.

Status: Open Sep 18, 2026 - 12:33 PM

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Staff Answer

Sep 18, 2026 - 12:33 PM

No. Both filters in the Watts Pure H2O 2-stage Water Filtration System are 5 microns, which is not small enough to remove dissolved solids like calcium. This system will not soften your water. For calcium and other dissolved solids, consider a reverse osmosis system for point-of-use, or a water softener for point-of-entry.