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Best NSF/ANSI Standard 44 Certified Water Softeners

Cation Exchange Softeners

NSF-44 certified water softeners reduce hardness minerals (calcium and magnesium) that cause scale buildup in pipes and appliances. These systems extend appliance life and improve water quality for household use.

Our Top NSF-44 Picks

Hand-picked softeners and conditioners for hardness reduction, with pricing verified June 2026. The genuinely NSF/ANSI 44-listed inventory is surfaced in the certified-filters tier below.

Affiliate Disclosure: We earn affiliate commissions from purchases made through our links at no extra cost to you. This supports our testing and keeps our content free. Learn More

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#1 BEST OVERALL SOFTENER
SoftPro Elite — water softener for NSF/ANSI 44 hardness reduction

SoftPro Elite

SoftPro

(195)
$1527
Salt-Based Softener

The cation-exchange softener that gets the NSF/ANSI 44 job — hardness reduction — done most efficiently. Its upflow regeneration design cuts salt use by up to 75% versus a conventional downflow valve, and the 64,000-grain capacity handles the hardest residential water. It is the softener most large households should buy first.

Contaminant Removal98% • Excellent
Flow Rate85% • Good
Value Score80% • Good

Our Review

NSF/ANSI 44 is the hardness-reduction standard, and the SoftPro Elite is the cation-exchange softener that delivers that reduction most efficiently. Its defining feature is upflow regeneration: by regenerating from the bottom up, it preserves unused resin and cuts salt consumption by up to 75% versus the downflow valves on budget units, which compounds into real savings over a 20-year resin life. The 64,000-grain capacity means it never struggles with very hard water or a busy household of four to six. We list no certification here because no active NSF/ANSI 44 record in our cert-index matches the SoftPro brand — the verified-cert inventory for this standard sits in the certified-filters tier below. As an efficient, high-capacity softener, though, the Elite is the one to beat.

Pros

  • +Upflow regeneration is the most salt-efficient design here
  • +64,000-grain capacity copes with the hardest water
  • +20+ year resin lifespan and a lifetime warranty
  • +Vacation mode suits seasonal and second homes

Cons

  • -Highest upfront cost of the salt-based picks
  • -Heavy tank needs two people to install
  • -Thin independent review base — mostly vendor-driven
  • -No third-party cert-index record we can cross-check

Specifications

Stages

1-stage

Flow Rate

12 GPM

Tank Size

10" x 54" resin tank + brine tank

Filter Life

240 months

Annual Filter Cost

$60/year

Warranty

Lifetime

Dimensions

10" x 54" (resin), 18" x 33" (brine)

Removes 5+ Contaminants

Calcium
Magnesium
Hardness Minerals
Iron
Manganese

Best For

Large households on very hard water
Owners who want the lowest salt and running cost
Buying Options
#2 MOST AVAILABLE
Whirlpool WHES40E — water softener for NSF/ANSI 44 hardness reduction

Whirlpool WHES40E

Whirlpool

(6,921)
$599.99
Salt-Based Softener

The best-selling softener at big-box retailers and the easiest NSF/ANSI 44 entry point — the WHES40 line is genuinely 44-listed (filed under its OEM manufacturer). Demand-initiated regeneration learns your usage, and 10 PPM iron removal is unusually strong for the price, with local retail and installation support behind it.

Contaminant Removal95% • Excellent
Flow Rate65% • Average
Value Score88% • Good
#3 BEST DIY VALUE
Fleck 5600SXT — water softener for NSF/ANSI 44 hardness reduction

Fleck 5600SXT

Pentair (Fleck)

(929)
$769
Salt-Based Softener

The enthusiast's softener and the standard for DIY buyers. The Pentair-made 5600SXT control valve is the most widely serviced in the US, so parts are everywhere, and at under $800 it delivers metered, usage-based regeneration with the deepest community knowledge base of any softener.

Contaminant Removal96% • Excellent
Flow Rate88% • Good
Value Score95% • Excellent
Buying Options
#4 BEST SALT-FREE
SpringWell FutureSoft — water softener for NSF/ANSI 44 hardness reduction

SpringWell FutureSoft

SpringWell

(523)
$1600
Salt-Free Conditioner

A salt-free conditioner, included as the honest counterpoint to NSF/ANSI 44: it prevents scale with TAC technology but does NOT remove hardness the way a 44-certified cation-exchange softener does. With the best flow rate in its category and a lifetime warranty, it is the top pick when scale prevention — not true softening — is the goal.

Contaminant Removal72% • Good
Flow Rate85% • Good
Value Score78% • Good
Buying Options
#5 PREMIUM SALT-FREE
Pelican NaturSoft NS3 — water softener for NSF/ANSI 44 hardness reduction

Pelican NaturSoft NS3

Pentair (Pelican)

(156)
$1898
Salt-Free Conditioner

The most rigorously tested salt-free conditioner — independently verified at 99.6% scale prevention by a German laboratory — but, like all conditioners, it does not soften water and so falls outside NSF/ANSI 44. Its TAC media never needs replacement, making it the maintenance-free premium option for scale control.

Contaminant Removal70% • Good
Flow Rate72% • Good
Value Score65% • Average
#6 BUDGET DESCALER
iSpring ED2000 — water softener for NSF/ANSI 44 hardness reduction

iSpring ED2000

iSpring

(2,268)
$159.99
Electronic Descaler

The cheapest hard-water option and the furthest from NSF/ANSI 44 — an electronic descaler that wraps around your pipe with no plumbing changes. It does not soften or even remove hardness, and the science is contested, but a money-back trial makes it a low-risk experiment for renters.

Contaminant Removal30% • Poor
Flow Rate100% • Excellent
Value Score70% • Good
Buying Options

Find the Right Softener for YOUR Water

Enter your city to see which contaminants are in your water and how hard your water is and which systems treat it.

True Cost Calculator

Compare total ownership cost including salt and resin life

Ownership period:3 years
1 year5 years

SoftPro Elite

SoftPro

$1707

Initial

$1527

Filters (3yr)

$180

Per gallon

$0.390

Whirlpool WHES40E

Whirlpool

$839.99

Initial

$599.99

Filters (3yr)

$240

Per gallon

$0.192

Fleck 5600SXT

Pentair (Fleck)

$994

Initial

$769

Filters (3yr)

$225

Per gallon

$0.227

SpringWell FutureSoft

SpringWell

$1675

Initial

$1600

Filters (3yr)

$75

Per gallon

$0.382

Compare to bottled water: A family spending $500/year on bottled water would pay $1500 over 3 years — more than running a softener over its lifetime while leaving your pipes and appliances scaled.

What NSF-44 Covers

CalciumMagnesiumHardness MineralsScale

Ideal For

  • Preventing scale buildup
  • Protecting appliances
  • Reducing soap scum
  • Improving water softness

Certification Focus: Water softening and hardness reduction

What Is NSF/ANSI 44 Certification for Water Softeners?

NSF/ANSI Standard 44 is the industry benchmark for cation exchange water softeners. Developed by NSF International, it sets the minimum requirements for the materials, design, construction, and performance of residential and commercial softeners that use ion-exchange resin to reduce water hardness.

Why it matters: when a softener carries NSF/ANSI 44 certification, an independent laboratory has verified that the system actually reduces hardness as the manufacturer claims. This is not self-certification — NSF runs hardness-reduction verification, structural-integrity testing, material-safety evaluation, and contaminant- extraction testing to confirm no harmful substances leach into the treated water.

What is tested: certification evaluates three areas — (1) hardness-reduction performance, confirming the softener lowers calcium and magnesium to claimed levels; (2) structural integrity, ensuring the system withstands normal pressure and usage over time; and (3) material safety, verifying every wetted material is safe and adds no contaminants. Products must also meet the lead-free requirements of NSF/ANSI 372.

NSF/ANSI 44 is not legally required for softeners sold in the United States, but it provides the strongest independent validation that a softener performs as advertised. A useful quirk to know: many certified softeners are filed in the NSF database under their OEM or private-label manufacturer rather than the consumer brand name — the Whirlpool WHES line, for example, is listed under “Water Channel Partners” — so when you verify a model, search by model number as well as brand.

All NSF-certified filters for NSF/ANSI 44

215 certified · 52 consumer filters

Type
Certifier
Standard

52 filters

Water Channel Partners

Under-sinkEcodyne IDP30S

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkEcodyne IDP40S

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkEcopure EP 6130

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkEcopure EP30

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkEcopure EP31

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkEcopure EP40

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkEcopure EP42

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Whole-houseEcopure EPHS⚠ Marketing caveat

Performance

NSF/ANSI 42
NSF/ANSI 44

Reduces: Barium, Chlorine, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228, Taste and Odor

Certified by NSF · Verified 2026-08-23

Whole-houseEcopure EPHY⚠ Marketing caveat

Performance

NSF/ANSI 42
NSF/ANSI 44

Reduces: Barium, Chlorine, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228, Taste and Odor

Certified by NSF · Verified 2026-08-23

Under-sinkKenmore 625.383500

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkKenmore 625.384200

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkKenmore 625.384600

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Whole-houseKenmore 625.385200⚠ Marketing caveat

Performance

NSF/ANSI 42
NSF/ANSI 44

Reduces: Barium, Chlorine, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228, Taste and Odor

Certified by NSF · Verified 2026-08-23

Under-sinkKenmore 625.386200

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkMorton M20

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkMorton M27

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkMorton M30

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkMorton M34

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkMorton M45

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkMorton M45C

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkMorton MC30

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Whole-houseMorton MHY⚠ Marketing caveat

Performance

NSF/ANSI 42
NSF/ANSI 44

Reduces: Barium, Chlorine, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228, Taste and Odor

Certified by NSF · Verified 2026-08-23

Under-sinkNorth Star NSC22

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkNorth Star NSC31

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkNorth Star NSC42

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Whole-houseNorth Star NSCWC⚠ Marketing caveat

Performance

NSF/ANSI 42
NSF/ANSI 44

Reduces: Barium, Chlorine, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228, Taste and Odor

Certified by NSF · Verified 2026-08-23

Under-sinkNorth Star NSCWHC

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkNorth Star NST30ED

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkNorth Star NST45ED1

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkNorth Star NST70ED1

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkRheem RHS18

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRheem RHS32

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRheem RHS42

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRheem RHW42

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkWhirlpool WHEC46

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkWhirlpool WHES18

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkWhirlpool WHES30

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkWhirlpool WHES33

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkWhirlpool WHES40

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkWhirlpool WHES44

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkWhirlpool WHES48

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Whole-houseWhirlpool WHESFC⚠ Marketing caveat

Performance

NSF/ANSI 42
NSF/ANSI 44

Reduces: Chlorine, Efficiency Rated[ER], Hardness Reduction[HR], Taste and Odor

Certified by NSF · Verified 2026-08-23

GE Appliances, a Haier Company

Whole-houseGXMH31H⚠ Marketing caveat

Performance

NSF/ANSI 42
NSF/ANSI 44

Reduces: Barium, Chlorine, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228, Taste and Odor

Certified by NSF · Verified 2026-08-23

Under-sinkGXSF30V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkGXSH40V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkGXSH45V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkGXSHC40N

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkW-29819⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

Everpure LLC

Under-sinkCES-5600E-15

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCES-9100E-24

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCES-9100TS E-30C

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

AQUASANA, INC

Under-sinkWP-16886⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

Aquion, Inc.

Under-sinkRainsoft EC4 100 CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC4 100 V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC4 100S CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC4 100S V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC4 150 CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC4 150 V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC4 75 CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC4 75 V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 100 CT

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 100 CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 100 T

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 100 V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 100S CT

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 100S CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 100S T

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 100S V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 150 CT

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 150 CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 150 T

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 150 V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 250 CT

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 250 CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 250 T

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 250 V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 50SS CT

Performance

NSF/ANSI 44

Reduces: Barium, Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 50SS CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 50SS T

Performance

NSF/ANSI 44

Reduces: Barium, Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 50SS V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 75 CT

Performance

NSF/ANSI 44

Reduces: Barium, Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 75 CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 75 T

Performance

NSF/ANSI 44

Reduces: Barium, Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft EC5 75 V

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC 75 CV

Performance

NSF/ANSI 44

Reduces: Barium, Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC 75 V

Performance

NSF/ANSI 44

Reduces: Barium, Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 100 CD

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 100 CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 100 D

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 100S CD

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 100S D

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 150 CD

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 150 CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 150 D

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 50SS CD

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 50SS D

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 75 CD

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 75 CV

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkRainsoft TC-M 75 D

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Canature Health Technology Group Co., Ltd.

Under-sinkCN-0717-679

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-07SEF

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-0815-991

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-0817-792

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-0822-1302

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-0822-1303

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-08SEF

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-0917-936

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-09SEF

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-1015-1160

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-1017-1245

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-1017-1274

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-1017-1387

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-1024-1670

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-12SEF

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCN-13SEF

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS10H-1017

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS12H-0926

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS13H-1017

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS15H-1015

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS16H-1017

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS17H-1015

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS18H-1015

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS18H-1017

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS19H-1015

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS21H-0926

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS22H-1017

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS3H-1017

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS3L-1017

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS4H-0817

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS4L-0817

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS5H-1017

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS6H-1017

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS6L-1017

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS7H-1017

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS8F-0815

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS8F-0824

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS8H PLUS-0815

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS8H PLUS-0824

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS8H-0722

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS8L-0722

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCS9H-0815

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkCSF25H-0817

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

EcoWater Systems LLC

Under-sinkECR3700R20

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkECR3700R30

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkECR3702R30

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkECR3702R40

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkECR3702R50S

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkECR3702R70

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkEEC1502R25

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkEEC1502R40

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sinkEEC8030

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkEEC8240

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkEEC8250

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkEEC8270

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkEER8020

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkEER8230

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkEER8250

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Whole-houseERR3700R20⚠ Marketing caveat

Performance

NSF/ANSI 42
NSF/ANSI 44

Reduces: Barium, Chlorine, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228, Taste and Odor

Certified by NSF · Verified 2026-08-23

Whole-houseERR3702R30⚠ Marketing caveat

Performance

NSF/ANSI 42
NSF/ANSI 44

Reduces: Barium, Chlorine, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228, Taste and Odor

Certified by NSF · Verified 2026-08-23

Whole-houseERR3702R50⚠ Marketing caveat

Performance

NSF/ANSI 42
NSF/ANSI 44

Reduces: Barium, Chlorine, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228, Taste and Odor

Certified by NSF · Verified 2026-08-23

Under-sinkESD2752R30

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkESD2800R25

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkESD2802R30

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkESD2802R39

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Waterboss

Under-sinkPRO180

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkPROPLUS380

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkProSeries 50LM

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkProSeries 50PS

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkProSeries 51LM

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkProSeries 51PS

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkProSeries 51PS-B

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkWaterBoss 220

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkWaterBoss 225

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkWaterBoss 365

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkWaterBoss 700

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkWaterBoss 900

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkWaterBoss 950

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

A. O. Smith Corporation

Under-sinkAO-WH-SOFT-350

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkAO-WH-SOFT-400T

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkAO-WH-SOFT-450T

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkAO-WH-SOFT-PRO-300

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkAO-WH-SOFT-PRO-500

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkAOW-S400

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkAOW-S500

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Aquamaster

Under-sinkAMP5000

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkAMP5100

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkAMP5500

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkAMS 700

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkAMS 900

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkAMS 950

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Electrophor, Inc.

Under-sinkA1000

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Under-sinkA800

Performance

NSF/ANSI 44

Reduces: Barium, Efficiency Rated[ER], Hardness Reduction[HR], Radium 226/228

Certified by NSF · Verified 2026-08-23

Performance Water Products, Inc.

Under-sink9100TS-2.0

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

Under-sink9100TS-4.5

Performance

NSF/ANSI 44

Reduces: Efficiency Rated[ER], Hardness Reduction[HR]

Certified by NSF · Verified 2026-08-23

PROTECT PLUS PRO, LLC

Under-sinkW-13629⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

Under-sinkWP-11087⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

CANATURE WATERGROUP

Under-sinkW-11020⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

CERTIFLOW WATER LLC

Under-sinkWP-16113⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

EAGLE WATER TREATMENT

Under-sinkWP-11470⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

ENVIROGARD PRODUCTS LIMITED

Under-sinkWP-11110⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

GENERAL TECHNOLOGIES, SPC

Under-sinkW-10071⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

HANKSCRAFT RUNXIN LLC.

Under-sinkW-9920⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

HANS PREMIUM WATER

Under-sinkW-13214⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

ION EXCHANGE INDIA LTD

Under-sinkW-14967⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

JASONS WATER SYSTEMS MFG. INC.

Under-sinkW-9201⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

LEAF HOME WATER SOLUTIONS, LLC

Under-sinkWP-13315⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

MAYTAG

Under-sinkWP-11389⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

NEW AQUA LLC, DBA HELLENBRAND

Under-sinkW-9440⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

NUGEN PURE WATER SYSTEMS, INC

Under-sinkW-14963⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

NUVIA WATER TECHNOLOGIES INC

Under-sinkWP-11206⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

RAINKING PURIFICATION SYSTEMS

Under-sinkWP-17035⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

Shandong Dechuan Chemical Technology Co., Ltd

Under-sinkW-30441⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

WATER CONTROL CORPORATION (WCC)

Under-sinkW-14647⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

WATER TECH INDUSTRIES

Under-sinkW-10731⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

WESTINGHOUSE WATER TREATMENT

Under-sinkW-9452⚠ Marketing caveat

Performance

NSF/ANSI 44

Reduces: Residential Cation Exchange Water Softeners

Certified by IAPMO · Verified 2026-08-23

New NSF-44 Softeners Get Tested Regularly

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Frequently Asked Questions

NSF/ANSI 44 is the industry standard for cation-exchange (ion-exchange) water softeners. A softener certified to it has been independently tested and verified to reduce water hardness — calcium and magnesium — as the manufacturer claims, rather than self-certifying. The testing also confirms structural integrity under normal water pressure and that no harmful materials leach into the treated water, and products must meet the lead-free requirements of NSF/ANSI 372. It is the most recognized third-party certification for residential softeners.

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