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Reverse Osmosis Filtration Systems

Uses item details. Price when purchased online

GLACIER FRESH GFU03 Reverse Osmosis System for Under-Sink, 800 GPD, No Electric/Noise, Tankless, 3:1 Pure to Drain, 7-stage, Filtration Accuracy 0.0001μm, NSF/ANSI 58 & 372 $259.99

GLACIER FRESH GFU03 Reverse Osmosis System for Under-Sink, 800 GPD, No Electric/Noise, Tankless, 3:1 Pure to Drain, 7-stage, Filtration Accuracy 0.0001μm, NSF/ANSI 58 & 372
Sponsored
current price $259.99

GLACIER FRESH GFU03 Reverse Osmosis System for Under-Sink, 800 GPD, No Electric/Noise, Tankless, 3:1 Pure to Drain, 7-stage, Filtration Accuracy 0.0001μm, NSF/ANSI 58 & 372

4.1 out of 5 Stars. 12 reviews
Free shipping, arrives in 3+ days

Reduced price Waterdrop G3P600 Tankless Reverse Osmosis System, 600 GPD, 8-Stage NSF Certified RO Water Filter, Smart Faucet, Bonus Replacement Filter $456.99 Was $566.99

Reduced price
Waterdrop G3P600 Tankless Reverse Osmosis System, 600 GPD, 8-Stage NSF Certified RO Water Filter, Smart Faucet, Bonus Replacement Filter
Sponsored
current price Now $456.99, Was $566.99

Waterdrop G3P600 Tankless Reverse Osmosis System, 600 GPD, 8-Stage NSF Certified RO Water Filter, Smart Faucet, Bonus Replacement Filter

4.8 out of 5 Stars. 196 reviews
Free shipping, arrives in 3+ days

Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI Certi1 Pure to Drain, Smart LED Faucet,with WD-G3-N1CF $456.99 Was $599.99

Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI Certi1 Pure to Drain, Smart LED Faucet,with WD-G3-N1CF
Sponsored
current price Now $456.99, Was $599.99
Options from $456.99 – $646.99

Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI Certi1 Pure to Drain, Smart LED Faucet,with WD-G3-N1CF

4.9 out of 5 Stars. 183 reviews
Free shipping, arrives in 3+ days

iSpring RCC7AK-UV, NSF Certified 7-Stage Under Sink Reverse Osmosis Water Filtration System, Alkaline Remineralization and UV Filter, Patented Top-Mounted Faucet Design for Easy Installation $329.99

iSpring RCC7AK-UV, NSF Certified 7-Stage Under Sink Reverse Osmosis Water Filtration System, Alkaline Remineralization and UV Filter, Patented Top-Mounted Faucet Design for Easy Installation
Sponsored
current price $329.99

iSpring RCC7AK-UV, NSF Certified 7-Stage Under Sink Reverse Osmosis Water Filtration System, Alkaline Remineralization and UV Filter, Patented Top-Mounted Faucet Design for Easy Installation

4.8 out of 5 Stars. 29 reviews
Free shipping, arrives in 3+ days

Overall pick DREO Reverse Osmosis Water Filter Countertop, 7-Stage RO Water Filtration System, Installation-Free, Reduce TDS, Water Filter Pitcher for Home, Kitchen, 3:1 Pure to Drain, WF511 Upgraded $299.99 Was $399.99

Overall pick
DREO Reverse Osmosis Water Filter Countertop, 7-Stage RO Water Filtration System, Installation-Free, Reduce TDS, Water Filter Pitcher for Home, Kitchen, 3:1 Pure to Drain, WF511 Upgraded
current price Now $299.99, Was $399.99

DREO Reverse Osmosis Water Filter Countertop, 7-Stage RO Water Filtration System, Installation-Free, Reduce TDS, Water Filter Pitcher for Home, Kitchen, 3:1 Pure to Drain, WF511 Upgraded

4.5 out of 5 Stars. 35 reviews
Save with
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Free shipping, arrives Sat, Jul 4

Waterdrop N1 Countertop Reverse Osmosis Water Filter System, TDS Reduction, 4-Stage Water Filter,Automatic Flushing, 3:1 Pure to Drain, UV Sterilization $219.00

Waterdrop N1 Countertop Reverse Osmosis Water Filter System, TDS Reduction, 4-Stage Water Filter,Automatic Flushing, 3:1 Pure to Drain, UV Sterilization
White, variant on Waterdrop N1 Countertop Reverse Osmosis Water Filter System, TDS Reduction, 4-Stage Water Filter,Automatic Flushing, 3:1 Pure to Drain, UV Sterilization
WD-C1H, variant on Waterdrop N1 Countertop Reverse Osmosis Water Filter System, TDS Reduction, 4-Stage Water Filter,Automatic Flushing, 3:1 Pure to Drain, UV Sterilization
WD-N1-W, variant on Waterdrop N1 Countertop Reverse Osmosis Water Filter System, TDS Reduction, 4-Stage Water Filter,Automatic Flushing, 3:1 Pure to Drain, UV Sterilization
current price $219.00
Options from $219.00 – $279.00

Waterdrop N1 Countertop Reverse Osmosis Water Filter System, TDS Reduction, 4-Stage Water Filter,Automatic Flushing, 3:1 Pure to Drain, UV Sterilization

4 out of 5 Stars. 110 reviews
Free shipping, arrives in 3+ days

Waterdrop WD-T3-C Reverse Osmosis Water Filter,450GPD,8-Stage Under Sink RO Water Filter, 450G Tankless Water Filtration System, 2:1 Pure to Drain, BPA Free, Plug-in Required $49.99

Waterdrop WD-T3-C Reverse Osmosis Water Filter,450GPD,8-Stage Under Sink RO Water Filter, 450G Tankless Water Filtration System, 2:1 Pure to Drain, BPA Free, Plug-in Required
WD-T3-M, variant on Waterdrop WD-T3-C Reverse Osmosis Water Filter,450GPD,8-Stage Under Sink RO Water Filter, 450G Tankless Water Filtration System, 2:1 Pure to Drain, BPA Free, Plug-in Required
WD-T3-RC, variant on Waterdrop WD-T3-C Reverse Osmosis Water Filter,450GPD,8-Stage Under Sink RO Water Filter, 450G Tankless Water Filtration System, 2:1 Pure to Drain, BPA Free, Plug-in Required
current price $49.99
Options from $49.99 – $279.99

Waterdrop WD-T3-C Reverse Osmosis Water Filter,450GPD,8-Stage Under Sink RO Water Filter, 450G Tankless Water Filtration System, 2:1 Pure to Drain, BPA Free, Plug-in Required

4.9 out of 5 Stars. 162 reviews
Free shipping, arrives in 3+ days

Best seller AquaTru Carafe Countertop Water Purifier System, Smart Alkaline 4-Stage Reverse Osmosis, 14x7.5x13 in., 1-Pack $355.50 Was $395.00

Best seller
AquaTru Carafe Countertop Water Purifier System, Smart Alkaline 4-Stage Reverse Osmosis, 14x7.5x13 in., 1-Pack
current price Now $355.50, Was $395.00

AquaTru Carafe Countertop Water Purifier System, Smart Alkaline 4-Stage Reverse Osmosis, 14x7.5x13 in., 1-Pack

4.6 out of 5 Stars. 1464 reviews
Free shipping, arrives in 3+ days

Waterdrop G3 Replacement Filter 1-Year Combo, Pack of 2 WD-G3-CF Filters and 1 WD-G3-CB Filter, Replacement for WD-G3-W, WD-G3P600 and WD-G3P800-W Reverse Osmosis System $91.99

Waterdrop G3 Replacement Filter 1-Year Combo, Pack of 2 WD-G3-CF Filters and 1 WD-G3-CB Filter, Replacement for WD-G3-W, WD-G3P600 and WD-G3P800-W Reverse Osmosis System
current price $91.99

Waterdrop G3 Replacement Filter 1-Year Combo, Pack of 2 WD-G3-CF Filters and 1 WD-G3-CB Filter, Replacement for WD-G3-W, WD-G3P600 and WD-G3P800-W Reverse Osmosis System

5 out of 5 Stars. 2 reviews
Free shipping, arrives in 3+ days

Waterdrop G3P600-CFCBROFilter, Replacement for Waterdrop G3P600 Reverse Osmosis System, Pack of 1 G3-N1CF, 1 G3-N3CB, and 1 G3P600-RO Set Filter $167.97

Waterdrop G3P600-CFCBROFilter, Replacement for Waterdrop G3P600 Reverse Osmosis System, Pack of 1 G3-N1CF, 1 G3-N3CB, and 1 G3P600-RO Set Filter
current price $167.97

Waterdrop G3P600-CFCBROFilter, Replacement for Waterdrop G3P600 Reverse Osmosis System, Pack of 1 G3-N1CF, 1 G3-N3CB, and 1 G3P600-RO Set Filter

Free shipping, arrives in 3+ days

iSpring RCC7AK 6-Stage Alkaline RO Water Filtration System w/F4AK 6-Month Replacement Filter Pack, NSF Certified, Under Sink Drinking Water Purifier Bundle $262.99

iSpring RCC7AK 6-Stage Alkaline RO Water Filtration System w/F4AK 6-Month Replacement Filter Pack, NSF Certified, Under Sink Drinking Water Purifier Bundle
Sponsored
current price $262.99
Options from $234.99

iSpring RCC7AK 6-Stage Alkaline RO Water Filtration System w/F4AK 6-Month Replacement Filter Pack, NSF Certified, Under Sink Drinking Water Purifier Bundle

4.8 out of 5 Stars. 188 reviews
Free shipping, arrives in 3+ days

Waterdrop G3P800 Reverse Osmosis System, 800 GPD Fas1 Pure to Drain, Tankless Under Sink RO Water Filter System, LED Purifier,with Extra WD-G3-N1CF $876.99 Was $1,099.99

Waterdrop G3P800 Reverse Osmosis System, 800 GPD Fas1 Pure to Drain, Tankless Under Sink RO Water Filter System, LED Purifier,with Extra WD-G3-N1CF
Sponsored
current price Now $876.99, Was $1,099.99

Waterdrop G3P800 Reverse Osmosis System, 800 GPD Fas1 Pure to Drain, Tankless Under Sink RO Water Filter System, LED Purifier,with Extra WD-G3-N1CF

4.9 out of 5 Stars. 119 reviews
Free shipping, arrives in 3+ days
Only 1 left

Whirlpool WHEERM Reverse Osmosis Replacement Membrane for Systems WHAROS5, WHAPSRO & WHER25 $69.88

Whirlpool WHEERM Reverse Osmosis Replacement Membrane for Systems WHAROS5, WHAPSRO & WHER25
current price $69.88

Whirlpool WHEERM Reverse Osmosis Replacement Membrane for Systems WHAROS5, WHAPSRO & WHER25

4.6 out of 5 Stars. 55 reviews
Save with
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Free shipping, arrives Sat, Jul 4

VonWater 600GPD Tankless Reverse Osmosis Water Filter System, 2:1 Pure to Drain Under Sink RO Water Filtration System $139.00

VonWater 600GPD Tankless Reverse Osmosis Water Filter System, 2:1 Pure to Drain Under Sink RO Water Filtration System
current price $139.00

VonWater 600GPD Tankless Reverse Osmosis Water Filter System, 2:1 Pure to Drain Under Sink RO Water Filtration System

Free shipping, arrives in 3+ days

Waterdrop G2 Tankless Reverse Osmosis System, 7-Stage Under Sink Water Filter, 400 GPD, 1:1 Pure to Drain Ratio, Reduces TDS, FCC Certified, USA Technology, Includes 1 Filter $267.98

Waterdrop G2 Tankless Reverse Osmosis System, 7-Stage Under Sink Water Filter, 400 GPD, 1:1 Pure to Drain Ratio, Reduces TDS, FCC Certified, USA Technology, Includes 1 Filter
current price $267.98

Waterdrop G2 Tankless Reverse Osmosis System, 7-Stage Under Sink Water Filter, 400 GPD, 1:1 Pure to Drain Ratio, Reduces TDS, FCC Certified, USA Technology, Includes 1 Filter

4.9 out of 5 Stars. 15 reviews
Free shipping, arrives in 3+ days

VonWater 528Gallon Countertop Reverse Osmosis Water Filter System, 7 Stage RO Purifier with UV, 3:1 Pure to Drain Water Filtration System $229.99

VonWater 528Gallon Countertop Reverse Osmosis Water Filter System, 7 Stage RO Purifier with UV, 3:1 Pure to Drain Water Filtration System
current price $229.99

VonWater 528Gallon Countertop Reverse Osmosis Water Filter System, 7 Stage RO Purifier with UV, 3:1 Pure to Drain Water Filtration System

4.4 out of 5 Stars. 8 reviews
Free shipping, arrives in 3+ days

Geekpure 5-Stage Reverse Osmosis Water Filter System-75GPD Under Sink RO system $145.99

Geekpure 5-Stage Reverse Osmosis Water Filter System-75GPD Under Sink RO system
current price $145.99

Geekpure 5-Stage Reverse Osmosis Water Filter System-75GPD Under Sink RO system

4.3 out of 5 Stars. 144 reviews
Free shipping, arrives in 3+ days

Slevoo Reverse Osmosis Water Filter Countertop, Ph+ & 6-Stage RO Water Filtration System-Alkaline Remineralization, 4:1 Pure to Drain, White $129.99

Slevoo Reverse Osmosis Water Filter Countertop, Ph+ & 6-Stage RO Water Filtration System-Alkaline Remineralization, 4:1 Pure to Drain, White
current price $129.99

Slevoo Reverse Osmosis Water Filter Countertop, Ph+ & 6-Stage RO Water Filtration System-Alkaline Remineralization, 4:1 Pure to Drain, White

4 out of 5 Stars. 1 reviews
Free shipping, arrives in 3+ days
Only 1 left

Clearance Under-Sink Tankless Reverse Osmosis Water Filter, Reverse Osmosis System, 600 GPD Water Filter, 2:1 Pure to Drain/Under Sink RO System/7 Stage Filtration for Home Office $136.00 Was $159.34

Clearance
Under-Sink Tankless Reverse Osmosis Water Filter, Reverse Osmosis System, 600 GPD Water Filter, 2:1 Pure to Drain/Under Sink RO System/7 Stage Filtration for Home Office
current price Now $136.00, Was $159.34
+$19.99 shipping

Under-Sink Tankless Reverse Osmosis Water Filter, Reverse Osmosis System, 600 GPD Water Filter, 2:1 Pure to Drain/Under Sink RO System/7 Stage Filtration for Home Office

5 out of 5 Stars. 1 reviews
Shipping arrives in 3+ days

Waterdrop WD-G3-CF Filter, Replacement for WD-G3-W, WD-G3P600 and WD-G3P800-W Reverse Osmosis System, 6-month Lifetime, 2-Pack $59.98

Waterdrop WD-G3-CF Filter, Replacement for WD-G3-W, WD-G3P600 and WD-G3P800-W Reverse Osmosis System, 6-month Lifetime, 2-Pack
current price $59.98

Waterdrop WD-G3-CF Filter, Replacement for WD-G3-W, WD-G3P600 and WD-G3P800-W Reverse Osmosis System, 6-month Lifetime, 2-Pack

Free shipping, arrives in 3+ days

Kind Water 6-Stage Reverse Osmosis Drinking Water System with Brushed Nickel Faucet $450.95

Kind Water 6-Stage Reverse Osmosis Drinking Water System with Brushed Nickel Faucet
Sponsored
current price $450.95
Options from $375.96

Kind Water 6-Stage Reverse Osmosis Drinking Water System with Brushed Nickel Faucet

Free shipping, arrives in 3+ days

Waterdrop WD-M6H Instant Hot Reverse Osmosis System Countertop Water Filter, 7-Stage, 3:1 Pure to Drain, Hot Water Dispenser with 5 Temperature Options, RO System with Glass Pitcher, BPA-Free $429.00

Waterdrop WD-M6H Instant Hot Reverse Osmosis System Countertop Water Filter, 7-Stage, 3:1 Pure to Drain, Hot Water Dispenser with 5 Temperature Options, RO System with Glass Pitcher, BPA-Free
Sponsored
current price $429.00

Waterdrop WD-M6H Instant Hot Reverse Osmosis System Countertop Water Filter, 7-Stage, 3:1 Pure to Drain, Hot Water Dispenser with 5 Temperature Options, RO System with Glass Pitcher, BPA-Free

4 out of 5 Stars. 1 reviews
Free shipping, arrives in 3+ days
Only 1 left

CTO Water Filter Replacement Cartridge for SimPure WP2 Reverse Osmosis Water Filter $17.99

CTO Water Filter Replacement Cartridge for SimPure WP2 Reverse Osmosis Water Filter
ALK Filter, variant on CTO Water Filter Replacement Cartridge for SimPure WP2 Reverse Osmosis Water Filter
CTO Filter, variant on CTO Water Filter Replacement Cartridge for SimPure WP2 Reverse Osmosis Water Filter
PP Filter, variant on CTO Water Filter Replacement Cartridge for SimPure WP2 Reverse Osmosis Water Filter
RO Filter, variant on CTO Water Filter Replacement Cartridge for SimPure WP2 Reverse Osmosis Water Filter
current price $17.99
Options from $17.99 – $199.99

CTO Water Filter Replacement Cartridge for SimPure WP2 Reverse Osmosis Water Filter

4.5 out of 5 Stars. 31 reviews
Free shipping, arrives in 3+ days

SimPure Y7/Y7P/WP1 Water Filter Cartridge RO+CF Replacement for Y7 WP1 Water Reverse Osmosis Water Filtration System $49.99

SimPure Y7/Y7P/WP1 Water Filter Cartridge RO+CF Replacement for Y7 WP1 Water Reverse Osmosis Water Filtration System
Available in additional 2 options
current price $49.99
Options from $49.99 – $65.99

SimPure Y7/Y7P/WP1 Water Filter Cartridge RO+CF Replacement for Y7 WP1 Water Reverse Osmosis Water Filtration System

4.8 out of 5 Stars. 35 reviews
Free shipping, arrives in 3+ days

iSpring F4AK 10"x2.5" Standard Water Filter Packs Replacement Cartridges for 6 Stage Reverse Osmosis, 6-Month Supply, No RO membrane $29.45

iSpring F4AK 10"x2.5" Standard Water Filter Packs Replacement Cartridges for 6 Stage Reverse Osmosis, 6-Month Supply, No RO membrane
current price $29.45

iSpring F4AK 10"x2.5" Standard Water Filter Packs Replacement Cartridges for 6 Stage Reverse Osmosis, 6-Month Supply, No RO membrane

5 out of 5 Stars. 3 reviews
Free shipping, arrives in 3+ days

Restored Waterdrop G2 Reverse Osmosis System, 7 Stage Tankless RO Water Filter System, Under Sink Water Filtration System, 400 GPD, 1:1 Pure to Drain, Reduces TDS, FCC Listed, USA Tech, WD-G2-W (Refurbished) $169.00

Restored Waterdrop G2 Reverse Osmosis System, 7 Stage Tankless RO Water Filter System, Under Sink Water Filtration System, 400 GPD, 1:1 Pure to Drain, Reduces TDS, FCC Listed, USA Tech, WD-G2-W (Refurbished)
current price $169.00

Restored Waterdrop G2 Reverse Osmosis System, 7 Stage Tankless RO Water Filter System, Under Sink Water Filtration System, 400 GPD, 1:1 Pure to Drain, Reduces TDS, FCC Listed, USA Tech, WD-G2-W (Refurbished)

Free shipping, arrives in 3+ days
Restored: Like New

Reduced price Waterdrop G3P600 Tankless Reverse Osmosis System, 600 GPD, 8-Stage NSF Certified RO Water Filter, Smart Faucet, Bonus Replacement Filter $456.99 Was $566.99

Reduced price
Waterdrop G3P600 Tankless Reverse Osmosis System, 600 GPD, 8-Stage NSF Certified RO Water Filter, Smart Faucet, Bonus Replacement Filter
G3P600-B, variant on Waterdrop G3P600 Tankless Reverse Osmosis System, 600 GPD, 8-Stage NSF Certified RO Water Filter, Smart Faucet, Bonus Replacement Filter
G3P600-B1, variant on Waterdrop G3P600 Tankless Reverse Osmosis System, 600 GPD, 8-Stage NSF Certified RO Water Filter, Smart Faucet, Bonus Replacement Filter
current price Now $456.99, Was $566.99

Waterdrop G3P600 Tankless Reverse Osmosis System, 600 GPD, 8-Stage NSF Certified RO Water Filter, Smart Faucet, Bonus Replacement Filter

4.8 out of 5 Stars. 196 reviews
Free shipping, arrives in 3+ days

Instant Hot Water Filter Dispenser Countertop Reverse Osmosis Water Filtration System Temperature Adjustment Smart Touch Screen $68.31

Instant Hot Water Filter Dispenser Countertop Reverse Osmosis Water Filtration System Temperature Adjustment Smart Touch Screen
current price $68.31

Instant Hot Water Filter Dispenser Countertop Reverse Osmosis Water Filtration System Temperature Adjustment Smart Touch Screen

Free shipping, arrives in 3+ days

DREO 2-Pack Reverse Osmosis Filter, Replacement for DREO RO Water Filter 112 & 113 & 114 & 115, Removes 99.99% of Contaminants including PFOA, PFOS, Chlorine, 6-12 Month per Cartridge, SGS Tested $79.99

DREO 2-Pack Reverse Osmosis Filter, Replacement for DREO RO Water Filter 112 & 113 & 114 & 115, Removes 99.99% of Contaminants including PFOA, PFOS, Chlorine, 6-12 Month per Cartridge, SGS Tested
current price $79.99

DREO 2-Pack Reverse Osmosis Filter, Replacement for DREO RO Water Filter 112 & 113 & 114 & 115, Removes 99.99% of Contaminants including PFOA, PFOS, Chlorine, 6-12 Month per Cartridge, SGS Tested

5 out of 5 Stars. 1 reviews
Save with
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Free shipping, arrives in 3+ days

Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI Certi1 Pure to Drain, Smart LED Faucet,with WD-G3-N1CF $456.99 Was $599.99

Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI Certi1 Pure to Drain, Smart LED Faucet,with WD-G3-N1CF
G3P600-C, variant on Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI Certi1 Pure to Drain, Smart LED Faucet,with WD-G3-N1CF
G3P600-C1, variant on Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI Certi1 Pure to Drain, Smart LED Faucet,with WD-G3-N1CF
current price Now $456.99, Was $599.99
Options from $456.99 – $646.99

Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI Certi1 Pure to Drain, Smart LED Faucet,with WD-G3-N1CF

4.9 out of 5 Stars. 183 reviews
Free shipping, arrives in 3+ days

iSpring RCC1UP-AK 100GPD Under Sink 7-Stage Reverse Osmosis RO Drinking Filtration System and Water Filter for Sink with Alkaline Remineralization, Booster Pump and UV Ultraviolet Filter, White $449.99

iSpring RCC1UP-AK 100GPD Under Sink 7-Stage Reverse Osmosis RO Drinking Filtration System and Water Filter for Sink with Alkaline Remineralization, Booster Pump and UV Ultraviolet Filter, White
Sponsored
current price $449.99

iSpring RCC1UP-AK 100GPD Under Sink 7-Stage Reverse Osmosis RO Drinking Filtration System and Water Filter for Sink with Alkaline Remineralization, Booster Pump and UV Ultraviolet Filter, White

4.8 out of 5 Stars. 35 reviews
Free shipping, arrives in 3+ days

Waterdrop CoreRO Countertop Reverse Osmosis System, 6-Stage, Instant Hot & Ambient, NSF/ANSI 58 & 372 Certified, No Installation, 3:1 Pure to Drain, WD-C1H $279.00

Waterdrop CoreRO Countertop Reverse Osmosis System, 6-Stage, Instant Hot & Ambient, NSF/ANSI 58 & 372 Certified, No Installation, 3:1 Pure to Drain, WD-C1H
Sponsored
current price $279.00
Options from $219.00

Waterdrop CoreRO Countertop Reverse Osmosis System, 6-Stage, Instant Hot & Ambient, NSF/ANSI 58 & 372 Certified, No Installation, 3:1 Pure to Drain, WD-C1H

4 out of 5 Stars. 110 reviews
Free shipping, arrives in 3+ days

AquaTru Classic Countertop Reverse Osmosis Water Purifier, 4-Stage Filtration $427.50 Was $475.00

AquaTru Classic Countertop Reverse Osmosis Water Purifier, 4-Stage Filtration
current price Now $427.50, Was $475.00

AquaTru Classic Countertop Reverse Osmosis Water Purifier, 4-Stage Filtration

4.6 out of 5 Stars. 2283 reviews
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Free shipping, arrives Sun, Jul 5
Only 1 left

Geekpure Universal Compatible Reverse Osmosis Filter Replacement Set with 50GPD Membrane-Pack of 5 $47.99

Geekpure Universal Compatible Reverse Osmosis Filter Replacement Set with 50GPD Membrane-Pack of 5
Available in additional 3 options
current price $47.99
Options from $47.99 – $48.99

Geekpure Universal Compatible Reverse Osmosis Filter Replacement Set with 50GPD Membrane-Pack of 5

4.7 out of 5 Stars. 217 reviews
Free shipping, arrives in 3+ days

Express Water Ultraviolet Water Filter UV Light Purifier 12 inch Housing with 10 inch Bulb Under Sink and Reverse Osmosis System Sterilizer $75.99

Express Water  Ultraviolet Water Filter  UV Light Purifier  12 inch Housing with 10 inch Bulb  Under Sink and Reverse Osmosis System Sterilizer
current price $75.99

Express Water Ultraviolet Water Filter UV Light Purifier 12 inch Housing with 10 inch Bulb Under Sink and Reverse Osmosis System Sterilizer

4.9 out of 5 Stars. 24 reviews
Free shipping, arrives in 3+ days

Best seller Pure Blue H2O 5PC Reverse Osmosis Filter System Replacement Filters $90.00

Best seller
Pure Blue H2O 5PC Reverse Osmosis Filter System Replacement Filters
current price $90.00

Pure Blue H2O 5PC Reverse Osmosis Filter System Replacement Filters

4.2 out of 5 Stars. 6 reviews
Free shipping, arrives in 3+ days
Only 2 left

Sterling Water Treatment QCRO Series Quick Change Reverse Osmosis 5-Stage Drinking Water Filtration System - QCRO-50 $512.08

Sterling Water Treatment QCRO Series Quick Change Reverse Osmosis 5-Stage Drinking Water Filtration System - QCRO-50
current price $512.08

Sterling Water Treatment QCRO Series Quick Change Reverse Osmosis 5-Stage Drinking Water Filtration System - QCRO-50

1 out of 5 Stars. 1 reviews
Free shipping, arrives in 3+ days

Brondell H2O+ Circle Reverse Osmosis Triple Filter Replacement Pack (RF-20) Three Filter Set $79.99 $79.99/count

Brondell H2O+ Circle Reverse Osmosis Triple Filter Replacement Pack (RF-20) Three Filter Set
current price $79.99
$79.99/count

Brondell H2O+ Circle Reverse Osmosis Triple Filter Replacement Pack (RF-20) Three Filter Set

4.5 out of 5 Stars. 248 reviews
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Free shipping, arrives Sat, Jul 4

Waterdrop N1 Countertop Reverse Osmosis System, 4-Stage Countertop Water Filtration System, Countertop RO Water Filter System, BPA Free, No Installation Required $219.00

Waterdrop N1 Countertop Reverse Osmosis System, 4-Stage Countertop Water Filtration System, Countertop RO Water Filter System, BPA Free, No Installation Required
current price $219.00

Waterdrop N1 Countertop Reverse Osmosis System, 4-Stage Countertop Water Filtration System, Countertop RO Water Filter System, BPA Free, No Installation Required

4.8 out of 5 Stars. 5 reviews
Free shipping, arrives in 3+ days

VonWater CT910 Countertop Reverse Osmosis Water Filter System, 7-Stage RO Water Filtration System, 528 Gallons Water Purifier, NSF/ANSI 372, Reduce TDS PFAS, No Installation $229.99

VonWater CT910 Countertop Reverse Osmosis Water Filter System, 7-Stage RO Water Filtration System, 528 Gallons Water Purifier, NSF/ANSI 372, Reduce TDS PFAS, No Installation
current price $229.99

VonWater CT910 Countertop Reverse Osmosis Water Filter System, 7-Stage RO Water Filtration System, 528 Gallons Water Purifier, NSF/ANSI 372, Reduce TDS PFAS, No Installation

4.1 out of 5 Stars. 8 reviews
Free shipping, arrives in 3+ days

APEC Water ROES-50, 5-Stage Under-Sink Reverse Osmosis Drinking Water Filter System, 50 GPD, WQA Certified, Removes 99% Contaminants $230.99

APEC Water ROES-50, 5-Stage Under-Sink Reverse Osmosis Drinking Water Filter System, 50 GPD, WQA Certified, Removes 99% Contaminants
current price $230.99

APEC Water ROES-50, 5-Stage Under-Sink Reverse Osmosis Drinking Water Filter System, 50 GPD, WQA Certified, Removes 99% Contaminants

4.8 out of 5 Stars. 218 reviews
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iSpring F28K75 3-Year Replacement Supply Set for 6-Stage Reverse Osmosis RO Water Filtration Systems with Alkaline Mineral Filter, 28 Piece, White $160.60

iSpring F28K75 3-Year Replacement Supply Set for 6-Stage Reverse Osmosis RO Water Filtration Systems with Alkaline Mineral Filter, 28 Piece, White
current price $160.60

iSpring F28K75 3-Year Replacement Supply Set for 6-Stage Reverse Osmosis RO Water Filtration Systems with Alkaline Mineral Filter, 28 Piece, White

5 out of 5 Stars. 6 reviews
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Reverse Osmosis Water Filter System SimPure Ro Water Filtration System, 75GPD | 5 Stage | Reduce TDS | Under Sink | Home Kitchen $119.69

Reverse Osmosis Water Filter System SimPure Ro Water Filtration System, 75GPD | 5 Stage | Reduce TDS | Under Sink | Home Kitchen
current price $119.69

Reverse Osmosis Water Filter System SimPure Ro Water Filtration System, 75GPD | 5 Stage | Reduce TDS | Under Sink | Home Kitchen

4.3 out of 5 Stars. 29 reviews
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Waterdrop WD-G2MRO Reverse Osmosis Membrane Composite Filter, 2-year Lifetime, Replacement for WD-G2-B WD-G2-W Reverse Osmosis System $89.99

Waterdrop WD-G2MRO Reverse Osmosis Membrane Composite Filter, 2-year Lifetime, Replacement for WD-G2-B WD-G2-W Reverse Osmosis System
current price $89.99

Waterdrop WD-G2MRO Reverse Osmosis Membrane Composite Filter, 2-year Lifetime, Replacement for WD-G2-B WD-G2-W Reverse Osmosis System

4.7 out of 5 Stars. 39 reviews
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APEC FILTER-MAX-ESPH 75 GPD Complete Replacement Filter Set for ESSENCE Series Alkaline Reverse Osmosis Water Filter System $99.99

APEC FILTER-MAX-ESPH 75 GPD Complete Replacement Filter Set for ESSENCE Series Alkaline Reverse Osmosis Water Filter System
current price $99.99

APEC FILTER-MAX-ESPH 75 GPD Complete Replacement Filter Set for ESSENCE Series Alkaline Reverse Osmosis Water Filter System

4.5 out of 5 Stars. 78 reviews
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AquaTru Carafe AT100 Replacement Stage 3 Reverse Osmosis Water Filter, 10x3x10 in., 1-Pack $59.95

AquaTru Carafe AT100 Replacement Stage 3 Reverse Osmosis Water Filter, 10x3x10 in., 1-Pack
current price $59.95

AquaTru Carafe AT100 Replacement Stage 3 Reverse Osmosis Water Filter, 10x3x10 in., 1-Pack

4.6 out of 5 Stars. 256 reviews
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Hydrofast Reverse Osmosis Countertop Water Purifier, Smart Touchscreen, 6-Stage Filter, Installation-Free for Home/Office/RV, 12-Month Long-Lasting Filter C100 $279.99 Was $300.99

Hydrofast Reverse Osmosis Countertop Water Purifier, Smart Touchscreen, 6-Stage  Filter, Installation-Free for Home/Office/RV, 12-Month Long-Lasting Filter C100
current price Now $279.99, Was $300.99

Hydrofast Reverse Osmosis Countertop Water Purifier, Smart Touchscreen, 6-Stage Filter, Installation-Free for Home/Office/RV, 12-Month Long-Lasting Filter C100

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Express Water Alkaline Filter 2 Pack Mineral, Antioxidant, pH + Water Filter Replacement 10 inch Inline Quick Connect Filter Under Sink and Reverse Osmosis System $74.99

Express Water  Alkaline Filter 2 Pack  Mineral, Antioxidant, pH + Water Filter Replacement  10 inch Inline Quick Connect Filter  Under Sink and Reverse Osmosis System
current price $74.99

Express Water Alkaline Filter 2 Pack Mineral, Antioxidant, pH + Water Filter Replacement 10 inch Inline Quick Connect Filter Under Sink and Reverse Osmosis System

4.7 out of 5 Stars. 15 reviews
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Hydrofast Reverse Osmosis Countertop Water Filtration System with Cold Water Function, Smart Touchscreen & 6-Stage Filtration,Water Purifier with UV Sterilization, Real-time Control

Hydrofast Reverse Osmosis Countertop Water Filtration System with Cold Water Function, Smart Touchscreen & 6-Stage Filtration,Water Purifier with UV Sterilization, Real-time Control

Hydrofast Reverse Osmosis Countertop Water Filtration System with Cold Water Function, Smart Touchscreen & 6-Stage Filtration,Water Purifier with UV Sterilization, Real-time Control

4.6 out of 5 Stars. 5 reviews
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iSpring RCC7AK-UV, NSF Certified 7-Stage Under Sink Reverse Osmosis Water Filtration System, Alkaline Remineralization and UV Filter, Patented Top-Mounted Faucet Design for Easy Installation $329.99

iSpring RCC7AK-UV, NSF Certified 7-Stage Under Sink Reverse Osmosis Water Filtration System, Alkaline Remineralization and UV Filter, Patented Top-Mounted Faucet Design for Easy Installation
current price $329.99

iSpring RCC7AK-UV, NSF Certified 7-Stage Under Sink Reverse Osmosis Water Filtration System, Alkaline Remineralization and UV Filter, Patented Top-Mounted Faucet Design for Easy Installation

4.8 out of 5 Stars. 29 reviews
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About Reverse Osmosis Filtration Systems in Water Filtration & Water Softeners - Walmart.com

Reverse osmosis filtration systems help you create cleaner-tasting drinking water at home with multi-stage filtration, compact under-sink designs, and straightforward filter replacement options.

Why reverse osmosis filtration systems fit busy homes

These systems give you filtered water from a dedicated faucet. That keeps daily drinking, cooking, and bottle filling more convenient.

Many shoppers choose an RO setup for its layered filtration process. Sediment, carbon, membrane, and polishing stages each handle a distinct step.

  • Enjoy crisp water for coffee, tea, soups, and ice trays.
  • Keep a steady filtered source for cooking pots and reusable bottles.
  • Choose tank or tankless formats based on cabinet space and flow needs.
  • Match your setup with replacement cartridges made for routine maintenance.

A reverse osmosis water filter can also support a cleaner countertop look. Under-sink installation keeps the main system tucked inside the cabinet.

Understanding reverse osmosis water filter price and system details

When comparing reverse osmosis water filter price, start with stage count and installation style. Three-stage units often focus on essential filtration.

Five-stage models usually add extra polishing steps. That setup can appeal to shoppers who want more detailed filtration design.

Tank systems store filtered water for quick filling. Tankless options can free cabinet room and create a streamlined layout.

Check the gallons-per-day rating if you fill pitchers, pots, or bottles often. That number helps you compare output across household routines.

Filter replacement design matters too. Twist-and-lock cartridges can make maintenance faster, while standard housings offer a familiar setup.

Some systems include a faucet, tubing, and adapters in the box. Others pair well with under-sink installation kits for a fuller setup.

You’ll also see ro water filtration models with remineralization stages, leak indicators, or pump-assisted designs. Those features shape fit, upkeep, and convenience.

If you’re comparing reverse osmosis machine cost, include replacement filters in your planning. Ongoing cartridge changes are part of normal ownership.

How to choose the right reverse osmosis water filter

Start with your sink area and cabinet depth. Under-sink systems need room for the main unit, tubing paths, and sometimes a storage tank.

Think about how you use filtered water each day. Smaller households may like compact formats, while larger households may want higher output.

Experienced shoppers often compare stage count, cartridge access, and faucet style first. Those details shape maintenance routines and the finished install.

Reverse osmosis filtration systems also vary by feed-water connection and drain requirements. Reviewing those basics early makes product selection easier.

Look closely at membrane rating, stage layout, and included hardware. Those details show how the system is built for installation and routine use.

A dedicated faucet, color-coded tubing, and quick-connect fittings can simplify setup. Clear filter life indicators also make maintenance timing easier to track.

Everyday uses for reverse osmosis filtration systems

These systems work well in kitchens where drinking water is part of every meal. You can use filtered water for coffee, tea, and produce rinsing.

They also fit households that cook often. Filtered water can be useful for pasta, grains, soups, and homemade beverages.

Some shoppers add an RO setup when moving into a new home. Others upgrade after using pitcher or faucet-mounted filters.

Ro water filtration can also support hobby uses that need a dependable filtered source. Aquariums, countertop ice makers, and espresso routines are common examples.

For planned upgrades, look for models that coordinate with replacement filters and compatible accessories. That can make future maintenance easier to manage.

Tankless formats suit apartments, condos, or tighter cabinets. Tank models can suit family kitchens with repeated glass and bottle filling.

What stands out when comparing systems

Stage design affects how the unit fits your routine. A three-stage system differs from a five-stage setup in filtration sequence and maintenance parts.

Included hardware matters during installation. Faucets, adapters, and tubing can shape how quickly your setup comes together.

Replacement filter availability also matters. Matching cartridges help you keep the system working with the parts designed for that model.

Whether you want an under-sink unit or a compact tankless design, the right pick supports consistent filtered water with less countertop clutter.

The right reverse osmosis water filter brings together organized installation, practical maintenance, and reliable access to filtered water for everyday kitchen tasks.