Water treatment for CA, AZ and NV
Whole house filtration, water softeners and reverse osmosis for homes in 33 communities across Southern California, the Phoenix metro and Nevada. It starts with a free in-home water test, so you know what you are fixing before anyone recommends a system.
- Family owned and operated
- Licensed and insured
- No obligation
Hardness reading
gpg, WQA scale
10 to 17.6 gpg
Hard to very hard
- Supply
- City of Phoenix Water Services report
- Watch
- calcium scale, chlorine taste, high total dissolved solids
Ranges come from each utility's annual water quality report. Your home can differ, which is what the free test is for.
The water we work with
In 32 of the 33 communities we serve, the local utility's own report reaches the hard or very hard range. Every bar below is that report's number, and every city opens its own page.
- Soft
- Slightly hard
- Moderately hard
- Hard
- Very hard
- Anaheim CAAbout 18 gpg
- Las Vegas NV16 to 18 gpg
- Henderson NV16 to 18 gpg
- Riverside CA14 to 18 gpg
- Phoenix AZ10 to 17.6 gpg
- Anaheim Hills CAAbout 17 gpg
- Corona CA14 to 17 gpg
- Temecula CA13 to 17 gpg
- Murrieta CA13 to 17 gpg
- San Bernardino CA13 to 17 gpg
- Fontana CA13 to 17 gpg
- Chandler AZ10 to 17 gpg
- Scottsdale AZ13 to 16 gpg
- Glendale AZ13 to 16 gpg
- Peoria AZ13 to 16 gpg
- Mesa AZAbout 12 to 16 gpg
- Santa Ana CA12 to 16 gpg
- Rancho Cucamonga CA12 to 16 gpg
- Ontario CA12 to 16 gpg
- Tempe AZ12 to 15 gpg
- Huntington Beach CA11 to 15 gpg
- Irvine CA10 to 15 gpg
- Pomona CA10 to 14 gpg
- Newport Beach CA10 to 14 gpg
- Pasadena CA9 to 14 gpg
- Gilbert AZAbout 13 gpg
- Long Beach CA8 to 13 gpg
- Burbank CA8 to 13 gpg
- Torrance CA8 to 12 gpg
- Los Angeles CA7 to 12 gpg
- Reno NV6 to 8 gpg
- Palm Springs CA5 to 8 gpg
- Costa Mesa CAAbout 6.6 gpg
Source: each city's utility water quality report, linked on that city's page. Scale: Water Quality Association, grains per gallon.
The Purest lineup
Softeners, whole house filtration, combination systems, reverse osmosis and leak protection. Your test results decide which of them belong in your home.
- 01
Water softener
PurestShield
Metered softener. Resin captures the calcium and magnesium, and it regenerates only when it needs to.
See where it fits - 02
Whole house filtration
Purest Flow X1
One tank treats every drop entering the home. Scheduled backwash, no salt and no brine tank.
See where it fits - 03
Filter and softener, one tank
Purest Flow X4
KDF55, catalytic carbon and softening resin layered in one tank, with a brine tank and metered regeneration.
See where it fits - 04
Dual tank combo
Purest HydroFlo
One tank filters, the other softens, and a single control head runs both.
See where it fits - 05
Reverse osmosis
Purest RO System
Under-sink reverse osmosis with a storage tank and its own faucet for drinking and cooking.
See where it fits - 06
Tankless reverse osmosis
Purest Tankless RO
No storage tank, so it saves space under the sink. Filter life shows on the unit.
See where it fits - 07
Add-on
Purest UV
A stainless UV chamber on the main line, after filtration, for bacteria and viruses.
See where it fits - 08
Leak protection
Purest Leak Detection
Sensors, a Wi-Fi hub and an automatic shut-off valve on the main line, with alerts on your phone.
See where it fits - 09
Add-on
Purest Purifier
A portable room air purifier with touch controls and a built-in carry handle.
See where it fits
How it works
01
We test at your tap
A technician tests for hardness, chlorine, iron, total dissolved solids and pH in your kitchen. It is free and there is no obligation to buy.
02
We read the results with you
You see the numbers before you see a recommendation, and the system we suggest is matched to what the test found.
03
You decide, no pressure
There is no obligation to buy. Keep your results, and call or text (949) 873-1129 with any question.
What we offer
- 01Whole House FiltrationFiltered water from every tap, shower and appliance.
- 02Water SoftenersStop scale, spots and dry skin at the source.
- 03Reverse OsmosisPurified drinking water from its own faucet.
- 04Combo 2-in-1 SystemsFiltration and softening, handled together.
- 05Leak DetectionSensors, phone alerts and an automatic shut-off.
- 06Water HeatersTank and tankless water heaters, repair and replacement.
- 07Free Water TestingHardness, chlorine, iron, TDS and pH, tested in your home.
Where we work
Pick your city to book a free water test there. Each city page has the local utility, its reported hardness and the systems that fit that supply.
Southern California
CA / 22
Yes. Purest Water Solutions provides free in-home water testing for homeowners in California, Phoenix, and Nevada. A technician tests for hardness, chlorine, iron, total dissolved solids, and pH at your tap. There is no obligation to purchase, and results are explained clearly before any system is recommended.
Every home is different. Contact us for a free in-home water test and quote tailored to your home.
Phoenix tap water from the Salt River Project and Central Arizona Project typically contains chlorine (disinfectant), total dissolved solids of 464 to 716 mg/L (City of Phoenix 2025 Water Quality Report), and hardness of 172 to 302 mg/L (10 to 17.6 grains per gallon) in the same report. Free water testing from Purest Water Solutions identifies your exact contaminant levels and recommends the right filtration or softener system for your home.
Yes. Las Vegas water from Lake Mead is among the hardest in the United States, averaging 278 to 415 mg/L total hardness. Hard water accelerates water heater corrosion, leaves scale on fixtures, and shortens appliance life. A whole-home water softener typically pays for itself within 2 to 3 years through reduced energy costs and appliance replacement savings.
Book your free water test
- Hardness, chlorine, iron, total dissolved solids and pH
- Results explained before any system is recommended
- No obligation to buy anything
- Or call (949) 873-1129, 24 hours a day, 7 days a week