Home / Water Softeners
Water softener systems for Phoenix-area homes.
A water softener removes the calcium and magnesium behind white spots, crusty faucets and water-heater scale. Happy Tap installs whole-home softener and carbon filtration systems across the Phoenix Valley, starting with a free in-home water test and clear written pricing.
Water softener questions, answered
What does a water softener remove?
A water softener removes calcium and magnesium, the minerals that make water hard and cause white spots and scale.
It does this through ion exchange: resin beads hold onto hardness minerals and release sodium (or potassium) in their place. A softener does not purify water or remove most chemicals; that’s the job of reverse osmosis or carbon filtration.
Does Phoenix have hard water?
Yes. The City of Phoenix’s 2025 report lists hardness of 10 to 17.6 grains per gallon, which is very hard.
Scottsdale reports 13–17 gpg, Chandler 10.1–16.8 gpg and Mesa averages of about 12–16 gpg. See the 2026 Phoenix Metro Water Quality Report for every city and source.
What size water softener do I need?
Sizing depends on your hardness, household size and daily water use, so we measure your water before recommending a system.
A softener’s capacity (in grains) determines how long it can run between regenerations. The system Phoenix homeowners choose most often from Happy Tap is rated at 48,000 grains by the manufacturer.
Salt-based or salt-free?
Only a salt-based softener actually removes hardness minerals; salt-free conditioners change how minerals behave but leave them in the water.
If you want spot-free glass and better soap lather, a salt-based softener is the standard choice. Read salt vs. salt-free softeners.
Do I still need reverse osmosis with a softener?
Usually, if you want purified drinking water. A softener treats hardness at every tap; reverse osmosis purifies drinking water at one faucet.
Phoenix water has high total dissolved solids (464–716 ppm in Phoenix’s report), and a softener adds a small amount of sodium. Reverse osmosis reduces both in the water you drink. That’s why most Happy Tap customers pair the two.
The system Phoenix homeowners choose most
Our most popular package pairs a whole-home softener and carbon filtration system with a tankless reverse osmosis system at the kitchen sink. Here are the whole-home system’s specifications from the manufacturer.
| Softening capacity | 48,000 grains |
|---|---|
| Softening resin | 75 lbs high-capacity resin, 10% crosslinked, made in the USA |
| Carbon | 15 lbs granular activated coconut shell carbon |
| Control valve | ProValve with ceramic discs and 72-hour memory backup |
| Service flow rate | 28 gallons per minute |
| Bypass size | 1 inch |
| Media tank | 12″ x 52″ |
| Brine (salt) tank | 15″ x 35″ square |
Specifications from the manufacturer’s product sheet. Your system is sized after your water test.
Component certifications
The softener’s control valve and media tank are certified to NSF/ANSI 44, the standard for residential water softeners, and the carbon comes from a manufacturer with NSF/ANSI/CAN 61 listings.
| Component | Manufacturer | Certification |
|---|---|---|
| Control valve | Hankscraft (Rev series) | NSF/ANSI 44: material and structural requirements |
| Media tank | Enpress (EFG series) | NSF/ANSI 44: material and structural requirements; conforms to NSF/ANSI/CAN 61 health effects |
| Activated carbon | Jacobi Carbons | NSF/ANSI/CAN 61 listings (drinking water system components) |
What these mean: NSF/ANSI 44 and 61 confirm that components are made of materials safe for drinking water contact and are structurally sound. They are component certifications, not a certification of contaminant reduction by the complete system. Listings verified on NSF’s public database, September 30, 2026; follow the links for current status.
How a water softener works
- Filter. In our combination systems, water first passes through activated carbon to reduce chlorine taste and odor.
- Soften. Resin beads exchange hardness minerals for sodium as water flows through the tank.
- Regenerate. On a schedule set to your usage, salt water from the brine tank rinses the resin and recharges it. Your household water doesn’t flow through the brine tank.
Limitations to know
- A softener doesn’t purify water or remove most contaminants.
- It adds a small amount of sodium; potassium chloride can be used instead of salt.
- It needs salt refills. Happy Tap offers salt delivery.
Maintenance
Keep salt in the brine tank and check settings periodically. Manufacturer Watts suggests adding salt when the water level rises above the salt, which is generally about every eight weeks. Installation is available through licensed Arizona plumbing professionals, and equipment comes with a lifetime warranty.
See how hard your water is.
Free in-home water test and clear written pricing.