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Ironwood ValleyPlumbing · Surprise, AZ
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Questions · Water treatment

Softener, filter or reverse osmosis?

They answer different questions. A softener protects the plumbing, the heater and the fixtures from hardness. A whole house filter deals with what is in the water everywhere, such as sediment or chlorine taste. Reverse osmosis makes drinking water at one faucet. Many Valley houses end up with a softener plus a small drinking system.

Last updated September 2026Ironwood Valley Plumbing
Water softener and filter installed in a garage
Softener and filterSurprise 85387

What each one is for

  • Softener: removes the hardness mineral, so scale stops forming in the heater and on fixtures
  • Whole house filter: treats sediment, taste or odor for every faucet in the house
  • Reverse osmosis: a small system at one sink that produces drinking and cooking water
  • Softener loop: not equipment at all, just the plumbing a builder left in the garage so a softener can be installed later

How Valley houses usually end up

The common pairing here is a softener for the plumbing and a reverse osmosis unit under the kitchen sink for drinking water. The softener saves the heater and the fixtures; the under sink system handles the glass of water.

A whole house filter joins them when there is a specific complaint about what is coming out of every faucet, rather than a general wish for better water.

Which one answers your complaint

What you are noticingWhat usually answers it
Scale on glass, fixtures and inside the heaterA softener
Drinking water that you would rather not drinkReverse osmosis at the sink
Taste or smell at every faucet in the houseA whole house filter
Grit or sediment showing up in aeratorsA whole house sediment filter
A heater that failed early, in a house with no treatmentA softener, before the next heater

From the job log

Work we’ve done

Water softener and filter installed in a garage
Surprise 85387
Reverse osmosis system and disposal under a kitchen sink
Copper filter loop with a bypass valve
Avondale 85392

Answers

More on this

Do I need both a softener and reverse osmosis?

Only if you want both jobs done. The softener is about protecting the house. Reverse osmosis is about what you drink. Plenty of people want one and not the other.

Will a whole house filter soften the water?

Not unless it is specifically a softening system. A sediment or carbon filter leaves hardness exactly where it was.

Can these be installed together?

Yes, and the order matters. We look at the loop, the drain and the space available at the house before saying how it should be laid out.

If you need this done

In-home estimate

Rather have someone look at it? Tell us what's going on

We come out, look at the problem and explain what it needs before any work starts. For something urgent, calling is fastest.

Rather talk? Call or text (602) 833-4133.