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Water softener vs whole-home filtration: which do you need?

Which one does your home need?

If your complaint is scale on fixtures, spotted glassware, dry skin or appliances wearing out early, you need a softener. If it is the smell or taste of chlorine, or you are worried about what else is in the supply, you need filtration. Most Metro Detroit homes on city water end up wanting both, which is why our standard system pairs them.

Last updated 1 October 2026.

Side by side

 Water softenerWhole-home filtration
Primary targetHardness minerals (calcium, magnesium)Chlorine, taste, odour and other chemicals
How it worksIon exchange: hardness swapped for sodium or potassiumMedia filtration: contaminants adsorbed onto carbon
Prevents scale?Yes, that is its jobNo
Removes chlorine?NoYes, carbon is used for exactly this
Reduces PFAS?NoOnly with certified carbon; RO at the tap is the other route
Improves taste?Indirectly at bestYes, this is the usual reason people notice it

How to decide, in four steps

  1. Name the symptom. Scale and soap that will not lather point to hardness. Smell and taste point to chlorine and chemicals.
  2. Check what is published. Your supplier reports what it treats for and what it finds. That tells you what filtration would be doing.
  3. Decide what you drink. If the drinking water is the concern specifically, reverse osmosis at one tap is cheaper than treating the whole house twice.
  4. Size it once. A system sized to your household avoids both the regeneration cost of an oversized unit and the premature exhaustion of an undersized one.
Not sure which symptom you have? That is what the free assessment is for. Request one.

What our standard system does

Our whole-home system is a softener and a carbon filtration tank on the same line, because on Metro Detroit city water the two complaints usually arrive together. Reverse osmosis is an optional upgrade at the kitchen tap for drinking water. See what is included, or see the price.

Common questions

Do I need a softener if I already have a filter?

Usually yes. A carbon filter does not remove hardness minerals, so scale keeps forming on fixtures and inside appliances even when the water tastes better.

Does a water softener remove chlorine?

No. Ion exchange targets calcium and magnesium. Chlorine removal is what carbon filtration is for, which is why the two are usually installed together.

Does a water softener remove PFAS?

No. A water softener does not remove PFAS. PFAS reduction requires specialized certified filtration (e.g., activated carbon or reverse osmosis).

Can I install just one now and add the other later?

Yes. Plumbing the line so a second stage can be added later is straightforward, and we will tell you on the call whether that makes sense for your home.

Will filtration fix my spotted glassware?

No. Spotting is a hardness symptom, so it is the softener that fixes it.

Is a whole-home filter enough for drinking water?

It improves taste and smell throughout the house. For drinking water specifically, reverse osmosis at the tap is the more thorough option and is a common upgrade.

Your water, decoded

See exactly what iscoming through your tap.

We call, learn what you are dealing with, and send a customized assessment. Free, useful, and no one needs to come into your home.

☎ (248) 213-7765 Free Water Assessment