The best reverse osmosis systems
Updated · Scores from third-party lab reports · How we score
The best reverse osmosis system is Culligan Aquasential Smart RO Drinking Water Filtration System (98/100), followed by Aquasana SmartFlow Reverse Osmosis (97/100), Kohler Aquifer RO Water Filtration System (97/100) and AO Smith High-Efficiency Reverse Osmosis (97/100). We ranked 115 RO filters.
Reverse osmosis pushes water through a membrane fine enough to block PFAS, fluoride, nitrates, arsenic and most dissolved solids. It also strips minerals, so systems with a remineralization stage are a nice bonus.
Top 25 ranked
- #1
98Culligan Aquasential Smart RO Drinking Water Filtration System
Culligan
Water filter · Reverse Osmosis, Sediment, Activated Carbon · Certified: NSF · Lab tested
Strong: verified contaminant removal, lab data indexed, certified by a recognized body.
- #2
97Aquasana SmartFlow Reverse Osmosis
Aquasana
Sink filter · Activated Carbon, Reverse Osmosis, Remineralization · Certified: NSF · Lab tested
Strong: verified contaminant removal, lab data indexed, certified by a recognized body.
- #3
97Kohler Aquifer RO Water Filtration System
Kohler
Water filter · VOC Carbon Filter, Sediment, Reverse Osmosis · Certified: NSF · Lab tested
Strong: verified contaminant removal, lab data indexed, certified by a recognized body.
- #4
97AO Smith High-Efficiency Reverse Osmosis
AO Smith
Sink filter · Reverse Osmosis, Activated Carbon, Catalytic carbon · Certified: WQA · Lab tested
Strong: verified contaminant removal, lab data indexed, certified by a recognized body.
- #5
94AquaTru Under Sink filter
Aqua Tru
Water filter · Reverse Osmosis, Sediment, VOC Carbon Filter · Certified: IAPMO · Lab tested
Strong: verified contaminant removal, lab data indexed, certified by a recognized body.
- #6
94Waterdrop G3 Tankless RO System with UV Sterilizing Light - Waterdrop G3P600/ G3P800
waterdrop
Water filter · Reverse Osmosis, Activated Carbon, UV-C · Certified: SGS, NSF · Lab tested
Strong: verified contaminant removal, lab data indexed, certified by a recognized body.
- #7
94Multipure Aqualuxe Countertop Water Filter
Multipure
Water filter · Reverse Osmosis, Activated Carbon, Sub-micron · Certified: NSF · Lab tested
Strong: verified contaminant removal, lab data indexed, certified by a recognized body.
- #8
93AquaTru Carafe
Aqua Tru
Water filter · Reverse Osmosis, VOC Carbon Filter, Activated Carbon · Certified: IAPMO · Lab tested
Strong: verified contaminant removal, lab data indexed, certified by a recognized body.
- #9
93Delta Faucet Clarifi Tankless Under Sink 6-Stage Reverse Osmosis System
Delta Faucet
Water filter · Reverse Osmosis, Sediment, Activated Carbon · Certified: NSF, IAPMO · Lab tested
Strong: verified contaminant removal, lab data indexed, certified by a recognized body.
- #10
93Brondell Capella Reverse Osmosis Under Sink Water Filtration System
Brondell
Water filter · Reverse Osmosis, Sediment, VOC Carbon Filter · Certified: NSF, WQA · Lab tested
Strong: verified contaminant removal, lab data indexed, certified by a recognized body.
- #11
91AquaTru Classic
Aqua Tru
Water filter · Sediment, Reverse Osmosis, VOC Carbon Filter · Certified: IAPMO · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #12
89PHILIPS Countertop Reverse Osmosis
Philips
Water filter · Reverse Osmosis · Certified: NSF · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #13
89Brondell Circle Reverse Osmosis Under Counter Water Filtration System
Brondell
Water filter · Reverse Osmosis, Sediment, VOC Carbon Filter · Certified: NSF, WQA · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #14
83Tyent UCE-13 PLUS
Tyent
Sink filter · Reverse Osmosis, Activated Carbon · Certified: NSF · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #15
83CovePure CP-16 Countertop Reverse Osmosis Water Purifier
CovePure
Water filter · Reverse Osmosis, Coconut Shell Activated Carbon, Polypropylene (PP) · Certified: NSF, SGS · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #16
83Tyent ACE-13
Tyent
Water filter · Activated Carbon, Reverse Osmosis · Certified: NSF · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #17
80iSpring RCC7 Reverse Osmosis System
Ispring
Sink filter · Reverse Osmosis, Polypropylene (PP), Activated Carbon · Certified: NSF · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #18
80Cloud RO
Cloud Water Filters
Sink filter · Reverse Osmosis, Sediment, Remineralization · Certified: NSF · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #19
80Waterdrop X Series Reverse Osmosis System, X12
Waterdrop Filters
Water filter · Reverse Osmosis, UV-C, Activated Carbon · Certified: IAPMO, NSF · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #20
80GE Reverse Osmosis Filtration System
GE Appliances
Water filter · Reverse Osmosis, Activated Carbon, Post Carbon · Certified: NSF · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #21
79Waterdrop Reverse Osmosis A1
Waterdrop Filters
Water filter · UV-C, Reverse Osmosis, Activated Carbon · Certified: NSF · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #22
79Waterdrop X Series Undersink Reverse Osmosis System, X16
Waterdrop Filters
Water filter · Reverse Osmosis, Activated Carbon, Polypropylene (PP) · Certified: IAPMO, NSF · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #23
75Bluevua ROPOT(UV) Countertop Reverse Osmosis Water System
Bluevua
Water filter · Polypropylene (PP), Remineralization, Reverse Osmosis · Lab tested
Strong: lab data indexed, filter technology disclosed. Weak: certified by a recognized body.
- #24
75SimPure Undersink T1-400 Alkaline 400GPD 8 Stage Tankless Reverse Osmosis System with Remineralization
SimPure
Water filter · Sediment, Activated Carbon, Remineralization · Certified: SGS, NSF · Lab tested
Strong: lab data indexed, certified by a recognized body, filter technology disclosed.
- #25
74Sans Countertop Reverse Osmosis Water Purifier
Sans
Water filter · Reverse Osmosis, Sediment, UV-C · Certified: SGS · Lab tested
Strong: lab data indexed, filter technology disclosed. Weak: certified by a recognized body.
Showing the top 25 of 115. See the full filter leaderboard with filters for packaging, source and lab testing.
Frequently asked questions
What is the best reverse osmosis system?
Culligan Aquasential Smart RO Drinking Water Filtration System (98/100) ranks highest among RO systems in our data.
Does reverse osmosis remove fluoride and PFAS?
Yes. Reverse osmosis typically removes over 90% of fluoride and PFAS, which is why RO systems top our filter rankings.