Yes — but only for what they are designed to remove. A quality shower filter with KDF-55 and activated carbon media will reduce free chlorine, some heavy metals, and odor-causing compounds. NSF/ANSI 177 is the specific standard for shower filtration performance. No shower filter softens water (that requires an ion-exchange softener), and no filter removes dissolved minerals like calcium and magnesium.
Do shower filters really work?
Yes — but only for wha…
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