Quick answer
- Softener → protects pipes, heater, appliances from scale
- Filtration/RO → cleaner, better-tasting drinking water
- They address different issues, not the same one
- A combined system covers whole-home + drinking water
When this applies
Use this when planning water treatment
Decide based on your goal: appliance/plumbing protection (softener), drinking-water quality (filtration), or both.
Your options
Water softener
Whole-home protection from hard-water scale. Best for extending appliance life and improving how water feels — but it doesn't purify drinking water.
Filtration / reverse osmosis
Removes contaminants for clean drinking and cooking water, usually at the kitchen tap. Doesn't address whole-home scale on its own.
What to watch out for
Buying one when you needed both
A softener won't fix taste/contaminant concerns, and a drinking-water filter won't stop scale. Matching the system to the goal avoids disappointment.
Schedule service
Frequently asked questions
Do I need both a softener and a filter?
Many local homes do: a softener to protect plumbing and appliances, plus reverse osmosis at the kitchen tap for drinking water. We'll test your water and advise.
Keep exploring
Reviewed by John Stevenson Plumbing, Heating & Air. Based on the distinct roles of softening vs. filtration and local water conditions. Last updated 2026-06-18.