Filter directory
180 water filters, and what each is actually certified to do
We are working through this list model by model, checking each one against the NSF and WQA certification databases. 10 are verified and have full reviews. The rest are listed with the facts we hold and marked unverified, because a status we have not checked is not a status we will publish.
How we make money: buying through a link here earns us a commission from the retailer at no extra cost to you, at the same rate whatever a product scores. No manufacturer pays us. Full disclosure.
How to read this list
Lead certified or Lead + PFOA/PFOS certified means we found that exact model in an accredited certifier's database holding that claim.
Aesthetic claims only means it is certified, but under NSF/ANSI 42 for taste, odour and chlorine, with no health-contaminant claim.
Not found in NSF or WQA means exactly that. It is not proof the product is uncertified: IAPMO is a third accredited body we have not yet searched, and at least one product here certifies through them.
Not yet verified means we have the product and the link but have not done the certification lookup. We publish no score and no claim for these.
Price bands. $ is roughly under $50, $$ around $50 to $200, $$$ above that. We show bands rather than figures because retail prices change constantly and a cached number is wrong within weeks. Use the link for the current price.
Pitcher
24 productsBrita Standard pitcherReview
Aesthetic claims only
Brita Elite pitcher filterReview
Lead certified
ZeroWater 5-stage pitcherReview
Not found in NSF or WQA
Clearly Filtered PitcherReview
Aesthetic claims only
Brita Stream pitcher
Not yet verified
PUR Classic pitcher
Not yet verified
PUR PLUS pitcher filter
Not yet verified
ZeroWater Ready-Pour pitcher
Not yet verified
Epic Water Filters Pure pitcher
Not yet verified
Epic Water Filters Nano pitcher
Not yet verified
LifeStraw Home pitcher
Not yet verified
Aquagear Pitcher
Not yet verified
Seychelle pH2O pitcher
Not yet verified
Waterdrop Chubby pitcher
Not yet verified
Waterdrop Lucid pitcher
Not yet verified
Philips Water pitcher
Not yet verified
Amazon Basics Water filter pitcher
Not yet verified
Nakii Water filter pitcher
Not yet verified
Invigorated Water pH Restore pitcher
Not yet verified
Soma Glass pitcher
Not yet verified
Hydros Slim pitcher
Not yet verified
Bobble Filtered pitcher
Not yet verified
Larq Pitcher PureVis
Not yet verified
Santevia Alkaline pitcher
Not yet verified
Under sink
18 productsAquasana AQ-5200 two-stageReview
Lead + PFOA/PFOS certified
Multipure AquaversaReview
Lead certified
Filtrete 3US-PS01 under-sink
Not yet verified
3M Under-sink filtration system
Not yet verified
Express Water Under-sink filtration
Not yet verified
Home Master Jr under-sink
Not yet verified
Clearly Filtered Under-sink system
Not yet verified
Epic Water Filters Smart Shield under-sink
Not yet verified
Aquasana AQ-5300+ three-stage
Not yet verified
Multipure Aquaperform
Not yet verified
Multipure Aqualuxe
Not yet verified
Waterdrop 17UA under-sink
Not yet verified
Waterdrop TSU under-sink
Not yet verified
Frizzlife SP99 under-sink
Not yet verified
Frizzlife MK99 under-sink
Not yet verified
iSpring US31 three-stage
Not yet verified
CuZn UC-200 under-counter
Not yet verified
Brondell Coral three-stage
Not yet verified
Reverse osmosis
19 productsAPEC ROES-50 EssenceReview
Aesthetic claims only
Waterdrop G3P800 tanklessReview
Not found in NSF or WQA
AquaTru Classic countertop ROReview
Not found in NSF or WQA
Home Master TMHP HydroPerfection
Not yet verified
Home Master TMAFC Artesian
Not yet verified
AquaTru Carafe countertop RO
Not yet verified
iSpring RCS5T tankless
Not yet verified
APEC ROES-PH75 alkaline RO
Not yet verified
RKIN AlcaPure countertop RO
Not yet verified
Express Water RO10DA ten-stage
Not yet verified
GE Reverse osmosis system
Not yet verified
APEC Ultimate RO-90
Not yet verified
iSpring RCC7 five-stage
Not yet verified
iSpring RCC7AK alkaline
Not yet verified
Waterdrop G2 tankless
Not yet verified
Frizzlife PD600 tankless RO
Not yet verified
SimPure Y7P countertop RO
Not yet verified
SimPure T1-400 under-sink RO
Not yet verified
Bluevua RO100ROPOT countertop
Not yet verified
Faucet mount
11 productsFrizzlife Faucet mount filter
Not yet verified
InstaPure Faucet filter system
Not yet verified
Brita Basic faucet system
Not yet verified
Brita Complete faucet system
Not yet verified
PUR PLUS faucet mount
Not yet verified
PUR Advanced faucet filter
Not yet verified
Waterdrop Faucet filtration system
Not yet verified
Engdenton Faucet water filter
Not yet verified
Waterdrop Faucet filter replacement cartridges
Not yet verified
Brita Faucet replacement filters
Not yet verified
PUR Faucet replacement filters
Not yet verified
Replacement cartridges
20 productsBrita Standard replacement filters multipackReview
Aesthetic claims only
Clearly Filtered Pitcher replacement filters
Not yet verified
AquaTru Replacement filter set
Not yet verified
ProOne Replacement filter elements
Not yet verified
Multipure CB6 replacement cartridge
Not yet verified
iSpring Whole house replacement cartridges
Not yet verified
Aquasana Rhino replacement filters
Not yet verified
Brita Elite replacement filters multipack
Not yet verified
PUR Pitcher replacement filters multipack
Not yet verified
ZeroWater Replacement filters multipack
Not yet verified
Aquagear Replacement filter
Not yet verified
Epic Water Filters Pure replacement filter
Not yet verified
Aquasana AQ-5200R replacement cartridges
Not yet verified
APEC Replacement filter set
Not yet verified
iSpring Replacement filter pack
Not yet verified
Waterdrop RO replacement filter set
Not yet verified
Express Water Replacement filter set
Not yet verified
Home Master Replacement filter set
Not yet verified
Berkey Black Berkey replacement elements
Not yet verified
Frizzlife Replacement cartridge
Not yet verified
Countertop / gravity
12 productsCleanwater4less Countertop filter
Not yet verified
Alexapure Pro gravity system
Not yet verified
Brita Hub countertop
Not yet verified
ProOne Big+ gravity system
Not yet verified
Berkey Royal Berkey
Not yet verified
Doulton Ceramic countertop
Not yet verified
Nikken PiMag countertop
Not yet verified
Berkey Big Berkey
Not yet verified
Berkey Travel Berkey
Not yet verified
Purewell Gravity water filter
Not yet verified
Waterdrop King Tank gravity
Not yet verified
Apex Countertop filter
Not yet verified
Refrigerator filter
20 productsEverydrop Filter 1 (EDR1RXD1)
Not yet verified
Everydrop Filter 2 (EDR2RXD1)
Not yet verified
Everydrop Filter 3 (EDR3RXD1)
Not yet verified
Everydrop Filter 4 (EDR4RXD1)
Not yet verified
GE MWF refrigerator filter
Not yet verified
GE RPWFE refrigerator filter
Not yet verified
GE XWF refrigerator filter
Not yet verified
Samsung DA29-00020B
Not yet verified
Samsung HAF-QIN
Not yet verified
LG LT1000P refrigerator filter
Not yet verified
LG LT700P refrigerator filter
Not yet verified
Frigidaire PureSource Ultra II
Not yet verified
Frigidaire WF3CB PureSource 3
Not yet verified
Waterdrop Refrigerator replacement filters
Not yet verified
AquaCrest Refrigerator filter replacements
Not yet verified
ICEPURE Refrigerator filter replacements
Not yet verified
Filterlogic Refrigerator filter replacements
Not yet verified
Glacier Fresh Refrigerator filter replacements
Not yet verified
PureLine Refrigerator filter replacements
Not yet verified
Crystala Refrigerator filter replacements
Not yet verified
Whole house
9 productsAquasana Rhino 1,000,000 gal
Not yet verified
3M Aqua-Pure whole house
Not yet verified
Express Water Whole house three-stage
Not yet verified
Home Master Whole house three-stage
Not yet verified
Filtersmart Whole house carbon
Not yet verified
US Water Systems Whole house filtration
Not yet verified
iSpring WGB32B three-stage
Not yet verified
iSpring WGB21B two-stage
Not yet verified
AO Smith Whole house filter
Not yet verified
Filter bottle
11 productsPhilips GoZero bottle
Not yet verified
Sawyer Filter bottle
Not yet verified
Grayl UltraPress purifier
Not yet verified
Clearly Filtered Filtered water bottle
Not yet verified
LifeStraw Go bottle
Not yet verified
LifeStraw Peak Series bottle
Not yet verified
Grayl GeoPress purifier bottle
Not yet verified
Brita Filtering water bottle
Not yet verified
Epic Water Filters Nalgene OG bottle
Not yet verified
Larq Bottle PureVis
Not yet verified
Katadyn BeFree filter bottle
Not yet verified
Camping / emergency
11 productsBackcountry filters target bacteria, protozoa and sediment. Most are not certified to NSF/ANSI drinking-water standards, which test different things.
Katadyn BeFree gravity
Not yet verified
Aquamira Water treatment drops
Not yet verified
Grayl Titanium purifier
Not yet verified
Platypus GravityWorks
Not yet verified
MSR Guardian purifier
Not yet verified
Sawyer Squeeze filter system
Not yet verified
Sawyer Mini filter
Not yet verified
LifeStraw Personal straw
Not yet verified
Katadyn Hiker Pro
Not yet verified
MSR TrailShot
Not yet verified
Potable Aqua Purification tablets
Not yet verified
Shower filter
8 productsShower filters are not certified for drinking water. They address chlorine and hard-water effects on skin and hair. No product here should be read as a drinking-water health claim.
Canopy Filtered showerhead
Not yet verified
Sprite Shower filter
Not yet verified
Hello Klean Shower filter
Not yet verified
T3 Source showerhead
Not yet verified
AquaBliss SF100 shower filter
Not yet verified
AquaBliss SF220 multi-stage
Not yet verified
Jolie Filtered showerhead
Not yet verified
Weddell Duo Shower filter
Not yet verified
Test kit
7 productsTest kits measure your water rather than treat it. Mail-in laboratory panels are substantially more accurate than strip kits, particularly for lead and PFAS.
SimpleLab Tap Score water test
Not yet verified
SimpleWater Advanced city water test
Not yet verified
Safe Home Ultimate water test kit
Not yet verified
Tap Score PFAS and GenX test
Not yet verified
Varify Water test strips
Not yet verified
Watersafe City water test kit
Not yet verified
JNW Direct Water test strips
Not yet verified
Softener / specialty
10 productsSofteners and descalers treat hardness and scale, not health contaminants. Our certification score does not apply to this category.
Fleck 5600SXT softener
Not yet verified
Tier1 Water softener
Not yet verified
AFWFilters Softener system
Not yet verified
Viqua UV system
Not yet verified
GE Water softener
Not yet verified
SoftPro Elite softener
Not yet verified
Aquasure Harmony softener
Not yet verified
iSpring ED2000 descaler
Not yet verified
Yarna Capacitive descaler
Not yet verified
HQUA UV water sterilizer
Not yet verified
Start with your water, not with a filter
A filter certified for the wrong contaminant is money spent on the wrong problem. Look up what your utility actually reported first.