Does a water filter remove the sulfur smell from well water?
Some do, and none of them fix the cause. Activated carbon handles light hydrogen sulfide and exhausts quickly on heavy smell; oxidizing filters and aeration systems handle more. If the smell is produced by sulfur bacteria in your well, heater, or pipes, which is the usual case, a filter treats the symptom while the colony keeps making gas, and the fix is at the source.
Run the two-faucet test before buying anything: a smell only on the hot side is the water heater, a smell only at the first draw of the morning is stagnation in the system, and a constant smell on the cold side is the well. Two of those three are cleaning problems, not filter problems.
A filter earns its place when the sulfide is truly in the groundwater and keeps coming after the system is clean. Clean first, retest, then size the filter for what remains.
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