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EWG's Tap Water Database

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All water filters using reverse osmosis technology

Below are all water filters using reverse osmosis technology. For more information on these and other filters, see EWG's online water filter buying guide.

EWG fully supports consumers buying water filters from retailers of their choice. In each of the product pages below, for your convenience, we feature a retailer that sells the filter/s that meet your criteria, including small businesses, water filter companies' official websites and Amazon. EWG is not associated with the manufacturer or distributor of any of these products. However, we participate in the Amazon affiliate program and may receive small donations for purchases made on Amazon through our website link.

Note: EWG obtained product pricing information between January and July 2017 from retailers and manufacturers' websites, and we assume no responsibility for the accuracy of product prices on this page.

Product Filter Type Price
3M 4US-RO-S01H Reverse Osmosis Drinking Water Filter System Plumbed-In to Separate Tap $99.99
3M Aqua-Pure APRO5500 Reverse Osmosis System Plumbed-In to Separate Tap $381
3M SGLP-RO Reverse Osmosis Filtration System Plumbed-In to Separate Tap $538.38
3M SQC-VIRO-4 Reverse Osmosis System Plumbed-In to Separate Tap $2,150
3M Water Factory Systems CMTRO-75 Reverse Osmosis Plumbed-In -
Aerus Origins RO 400 Reverse Osmosis System Plumbed-In to Separate Tap -
AllPure Reverse Osmosis Filter AP Plumbed-In to Separate Tap $229
AllPure Reverse Osmosis with Booster Pump AP-4.0/P Plumbed-In to Separate Tap $360
American Plumber WRO-2550 Reverse Osmosis Drinking Water System Plumbed-In to Separate Tap $329.36
APEC Water Systems RO-90 Reverse Osmosis System Plumbed-In to Separate Tap $425
APEC Water Systems RO-PH90 Reverse Osmosis System Plumbed-In to Separate Tap $460
Aqua Systems PureChoice AQPC-35 Plumbed-In to Separate Tap -
Aqua Systems PureChoice AQPC-435 Plumbed-In to Separate Tap -
Aqua-Pure 3M RO301 Reverse Osmosis Water Filtration System Plumbed-In to Separate Tap $474
Aqua-Pure 3M RO401 Reverse Osmosis Water Filtration System Plumbed-In to Separate Tap $843.57
Aqua-Pure 3M RO501 Reverse Osmosis Water Filtration System Plumbed-In to Separate Tap $1,942.95
AquaKinetic A200 Drinking Water System Plumbed-In to Separate Tap -
Aquaphor RO-101 Reverse Osmosis Purifier Plumbed-In to Separate Tap $349
Aquasana AQ-RO-3 Reverse Osmosis System Plumbed-In to Separate Tap $316.37
Bluewater Cleone Plumbed-In $999
Bluewater Pro Reverse Osmosis Water Purification System Plumbed-In $4,499.00
Bluewater Spirit Plumbed-In $2,399.00
Brita Redi-Twist 3-Stage Water Filtration System USS-334 Plumbed-In to Separate Tap $189.97
Brita Redi-Twist 3-Stage Water Filtration System USS-335 Plumbed-In to Separate Tap $189.97
Brondell H2O+ Circle Reverse Osmosis Water Filtration System Plumbed-In to Separate Tap $399
Culligan Aqua-Cleer System Plumbed-In to Separate Tap -
Culligan Good Water Machine Reverse Osmosis Water System AC-30 Plumbed-In to Separate Tap -
Culligan Good Water Machine Reverse Osmosis Water System AC-30 PLUS Plumbed-In to Separate Tap -
Culligan Good Water Machine Reverse Osmosis Water System AC-30L Plumbed-In to Separate Tap -
Culligan Good Water Machine Reverse Osmosis Water System AC-30L PLUS Plumbed-In to Separate Tap -
Culligan Good Water Machine Reverse Osmosis Water System AC-30M Plumbed-In to Separate Tap -
Culligan Good Water Machine Reverse Osmosis Water System AC-30M PLUS Plumbed-In to Separate Tap -
DuPont Reverse Osmosis Filtration System WFRO60X Plumbed-In to Separate Tap $177.94
EcoPure EP-RO25 Reverse Osmosis System Plumbed-In to Separate Tap $179
EcoPure Reverse Osmosis Drinking Water Filtration System ECOP30 Plumbed-In to Separate Tap $157.70
EcoWater Reverse Osmosis Drinking Water System ERO-175 Plumbed-In to Separate Tap -
EcoWater Reverse Osmosis Drinking Water System ERO-375-BK Plumbed-In to Separate Tap -
EcoWater Reverse Osmosis Drinking Water System ERO-375-BN Plumbed-In to Separate Tap -
EcoWater Reverse Osmosis Drinking Water System ERO-375-CP Plumbed-In to Separate Tap -
EcoWater Reverse Osmosis Drinking Water System ERO-375-RB Plumbed-In to Separate Tap -
EcoWater Reverse Osmosis Drinking Water System ERO-375-WH Plumbed-In to Separate Tap -
EcoWater Reverse Osmosis Drinking Water System ERO-375E-BK Plumbed-In to Separate Tap -
EcoWater Reverse Osmosis Drinking Water System ERO-375E-BN Plumbed-In to Separate Tap -
EcoWater Reverse Osmosis Drinking Water System ERO-375E-CP Plumbed-In to Separate Tap -
EcoWater Reverse Osmosis Drinking Water System ERO-375E-RB Plumbed-In to Separate Tap -
EcoWater Reverse Osmosis Drinking Water System ERO-375E-WH Plumbed-In to Separate Tap -
EcoWater Reverse Osmosis Drinking Water System HERO-375-BK Plumbed-In -
EcoWater Reverse Osmosis Drinking Water System HERO-375-BN Plumbed-In -
EcoWater Reverse Osmosis Drinking Water System HERO-375-CP Plumbed-In -
EcoWater Reverse Osmosis Drinking Water System HERO-375-RB Plumbed-In -
EcoWater Reverse Osmosis Drinking Water System HERO-375-WH Plumbed-In -
EZ-FLO 22000 Reverse Osmosis Water Filtration System Plumbed-In to Separate Tap $225.13
GE PNRQ15RBL Reverse Osmosis Filtration System Plumbed-In to Separate Tap $369
GE PNRQ20RBL Reverse Osmosis Filtration System Plumbed-In to Separate Tap $370
GE PNRQ21RBN Reverse Osmosis Filtration System Plumbed-In to Separate Tap $399
GE PXRQ15RBL Reverse Osmosis Premium Water Filtration System Plumbed-In to Separate Tap $279.99
Glacier Bay Reverse Osmosis Drinking Water Filtration System HCGROS5 Plumbed-In to Separate Tap $229
Hague Drinking Water System H6500 Plumbed-In to Separate Tap -
Hague WaterMax Reverse Osmosis Drinking Water System H6000 Plumbed-In to Separate Tap -
Hahn Filtration Reverse Osmosis Drinking Water Filtration Systems HF-RO Plumbed-In to Separate Tap $229.99
Hankscraft Reverse Osmosis RO-6-BF Plumbed-In to Separate Tap $459.73
Hankscraft Reverse Osmosis RO-6-BF-NF Plumbed-In to Separate Tap $373.73
Hellenbrand Millennium Drinking Water System MRO-35 Plumbed-In to Separate Tap -
Hellenbrand Millennium MRO-35GF Plumbed-In to Separate Tap -
Icon Technology Systems eco3 RO-VH1-PR-EL Plumbed-In -
Icon Technology Systems eco3 RO-VH1-PR-EL-BS Plumbed-In -
Icon Technology Systems eco3 RO-VH1-PR-EN Plumbed-In -
Icon Technology Systems eco3 RO-VH1-PR-EN-BS Plumbed-In -
Icon Technology Systems eco3 RO-VH1-PR-IL Plumbed-In -
Icon Technology Systems eco3 RO-VH1-PR-IN Plumbed-In -
Icon Technology Systems eco3 RO-VH1-PR-IN-NS-MD Plumbed-In -
iSpring #RCC7 5-Stage Under-Sink Reverse Osmosis Water Filter System Plumbed-In to Separate Tap $318.40
iSpring #RCC7AK 6-stage Reverse Osmosis Water Filtration System Plumbed-In to Separate Tap $367.84
iSpring #RCC7AK-UV 7-stage Reverse Osmosis Water Filtration System Plumbed-In to Separate Tap $479.98
iSpring #RCC7P 5-Stage Reverse Osmosis Water Filtration System Plumbed-In to Separate Tap $431.98
iSpring #RCC7P-AK 6-stage Reverse Osmosis Water Filtration System Plumbed-In to Separate Tap $463.98
Kenmore Refrigerator Water Filter 625.381560 Refrigerator Filter $169.99
Kinetico K5 Drinking Water Station Plumbed-In to Separate Tap -
Lancaster Guardian Reverse Osmosis Water Treatment CRO-350 Plumbed-In to Separate Tap -
Lancaster Guardian Reverse Osmosis Water Treatment LRO-35 Plumbed-In to Separate Tap -
Marlo Incorporated Reverse Osmosis System TFC-35 Plumbed-In to Separate Tap -
Marlo Incorporated Reverse Osmosis System TFC-35M Plumbed-In to Separate Tap -
Master Water Conditioning Reverse Osmosis Drinking Water System Puro-35T Plumbed-In to Separate Tap -
Microline Reverse Osmosis System TFC-335 Plumbed-In to Separate Tap $239
Microline Reverse Osmosis System TFC-435 Plumbed-In to Separate Tap $269
Multipure AquaRO Reverse Osmosis System Plumbed-In to Separate Tap $605
Nimbus Water Reverse Osmosis System WM5-50-WCF Plumbed-In to Separate Tap $375
North Star Water Reverse Osmosis System NSRO42C4 Plumbed-In to Separate Tap $654.01
Olympia Water Systems Reverse Osmosis System OROS-50 Plumbed-In to Separate Tap $289.99
Olympia Water Systems Reverse Osmosis System OROS-80 Plumbed-In to Separate Tap $299.99
OmniFilter RO2050 Plumbed-In to Separate Tap $159.99
Paragon Water Systems 4 Stage Reverse Osmosis TLRO4H50T Plumbed-In to Separate Tap -
Paragon Water Systems 4 Stage Reverse Osmosis TLRO4H75T Plumbed-In to Separate Tap -
Pelican 6-Stage Reverse Osmosis System PRO-RO Plumbed-In to Separate Tap $278.57
Pentek RO-2550 Filtration System Plumbed-In to Separate Tap $206.99
Premier by Watts 4SV-W50 Reverse Osmosis System Plumbed-In to Separate Tap $195.95
Premier by Watts 5SV-W50 Reverse Osmosis System Plumbed-In to Separate Tap $199.95
Premier by Watts RO-Pure Plus Reverse Osmosis System Plumbed-In to Separate Tap $195
Premier by Watts RO-Pure Reverse Osmosis System Plumbed-In to Separate Tap $189.95
Premier by Watts WP4-V Reverse Osmosis System Plumbed-In to Separate Tap $273.95
Premier by Watts WP5-50 Reverse Osmosis System Plumbed-In to Separate Tap $249.95
PureBlueH2O PB-TLRO4H50T Water Filtration System Plumbed-In to Separate Tap $191.95
Puronics Micromax 6000 TFC Filtration System Plumbed-In $932.50
Puronics Micromax 6500 TFC Filtration System Plumbed-In -
Puronics Micromax 7000 Filtration System Plumbed-In -
RainSoft Ultrefiner II-FMV-BNFP Plumbed-In -
RainSoft Ultrefiner II-FMV-BNFV Plumbed-In -
RainSoft Ultrefiner II-FMV-CHFP Plumbed-In -
RainSoft Ultrefiner II-FMV-CHFV Plumbed-In -
RainSoft Ultrefiner II-SFMV-BNFP Plumbed-In -
RainSoft Ultrefiner II-SFMV-BNFV Plumbed-In -
RainSoft Ultrefiner II-SFMV-CHFP Plumbed-In -
RainSoft Ultrefiner II-SFMV-CHFV Plumbed-In -
Rayne RaynePure Plus Reverse Osmosis System Plumbed-In to Separate Tap -
The LeverEdge Westinghouse Drinking Water System A-450 Plumbed-In to Separate Tap -
The LeverEdge Westinghouse Drinking Water System D-550 Plumbed-In to Separate Tap -
The LeverEdge Westinghouse Drinking Water System P-550 Plumbed-In to Separate Tap -
The LeverEdge Westinghouse Drinking Water System R-450 Plumbed-In to Separate Tap -
Water-Right Eclipse Reverse Osmosis Drinking Water System WRO-35 Plumbed-In to Separate Tap -
Watts 4-Stage Reverse Osmosis System PWRO4 Plumbed-In to Separate Tap $209
Watts Kwik Change RO System WQC4RO11-50MT Plumbed-In to Separate Tap $259.95
Watts Kwik Change RO System WQC4RO11-50PT Plumbed-In to Separate Tap $289.99
Watts Kwik Change RO System WQC4RO13-100MT Plumbed-In to Separate Tap $394.99
Watts Kwik Change RO System WQC4RO13-100PT Plumbed-In to Separate Tap $559.88
Watts ZRO-4 Zero Waste Reverse Osmosis Water Filtration System PWRO4ZRO Plumbed-In to Separate Tap $465
Whirlpool UltraEase Reverse Osmosis Filtration System WHAROS5 Plumbed-In to Separate Tap $131
Whirlpool UltraEase Reverse Osmosis System WHAPSRO Plumbed-In to Separate Tap $447
Whirlpool UltraEase Water Purifier Filtration System WHER25 Plumbed-In to Separate Tap $197