A whole-home filter treats water where it enters the house. Every tap gets it — showers, laundry, kitchen — not just a pitcher on the counter.
It’s for taste, odor, and sediment at every faucet. In Louisville that often means a pool-like chlorine smell in a hot shower, or city water that tastes “off” even though it’s treated and safe. Some older homes also see grit at faucet screens.
Not a softener. Spots on glasses and scale in the kettle are hardness — that’s a water softener.
Not reverse osmosis. RO is for the kitchen drinking tap. If the shower is the problem, RO won’t fix it (reverse osmosis in Louisville).
City water is treated and regulated. People still want the whole house to smell and taste like water — not the plant.
Water treatment in Louisville · Whole-home filter overview.
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