Best Water Filtration Systems
Updated December 2024
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Best Water Filtration Systems
2024 Buyer's GuideUpdated December 2024
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1
WATERDROP
Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI 42 & 58 & 372 Certified, Under Sin...
Type: Under sink
Filtration Process: 8-stage with reverse osmosis
Filter Lifespan: 2,200 gallons
Flow Rate: 0.42 gallons per minute
Dimensions: 5.7" wide x 18.1" deep x 17.7" tall
1
Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI 42 & 58 & 372 Certified, Under Sin...
WATERDROP
Type: Under sink
Filtration Process: 8-stage with reverse osmosis
Filter Lifespan: 2,200 gallons
Flow Rate: 0.42 gallons per minute
Dimensions: 5.7" wide x 18.1" deep x 17.7" tall
2
SimPure UV Tankless Reverse Osmosis System, NSF/ANSI 58 Certified, Under Sink RO Water Filter System 400 GPD, 8 Stage Water Fil...
Type: Under sink
Filtration Process: 8-stage with reverse osmosis
Filter Lifespan: 1,057 gallons
Flow Rate: 400 gallons per day
Dimensions: 9" wide x 16" deep x 18" tall
2
SimPure UV Tankless Reverse Osmosis System, NSF/ANSI 58 Certified, Under Sink RO Water Filter System 400 GPD, 8 Stage Water Fil...
Type: Under sink
Filtration Process: 8-stage with reverse osmosis
Filter Lifespan: 1,057 gallons
Flow Rate: 400 gallons per day
Dimensions: 9" wide x 16" deep x 18" tall
3
3
SimPure 40/200 Micron Spin Down Sediment Filter, Reusable Whole House Sediment Water Filter, Pre-Filtration System for City/Wel...
Type: Whole-house
Filtration Process: Sediment filter
Filter Lifespan: Reusable
Flow Rate: Up to 20 gallons per minute
Dimensions: 3.7" wide x 2.4" deep x 8.3" tall
4
NU Aqua 5-Stage Under Sink Reverse Osmosis Water Filter System - 100 GPD RO Filtration w/Faucet & Tank - PPM Meter - 100GPD Und...
Type: Under sink
Filtration Process: 5-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 100 gallons per day
Dimensions: 19.5" wide x 5.5" deep x 15" tall
4
NU Aqua 5-Stage Under Sink Reverse Osmosis Water Filter System - 100 GPD RO Filtration w/Faucet & Tank - PPM Meter - 100GPD Und...
Type: Under sink
Filtration Process: 5-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 100 gallons per day
Dimensions: 19.5" wide x 5.5" deep x 15" tall
5
NU Aqua 5-Stage Under Sink Reverse Osmosis Water Filter System - Booster Pump - 100 GPD RO Filtration w/Faucet & Tank - PPM Met...
Type: Under sink
Filtration Process: 5-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 100 gallons per day
Dimensions: 15" wide x 7" deep x 18" tall
5
NU Aqua 5-Stage Under Sink Reverse Osmosis Water Filter System - Booster Pump - 100 GPD RO Filtration w/Faucet & Tank - PPM Met...
Type: Under sink
Filtration Process: 5-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 100 gallons per day
Dimensions: 15" wide x 7" deep x 18" tall
6
Waterdrop 15UB-UF 0.01 μm Ultra Filtration Under Sink Water Filter System for Baçtёria Reduction, Reduces Lead, Chlorine, Bad T...
Type: Under sink
Filtration Process: Multistage filtration
Filter Lifespan: 16,000 gallons
Flow Rate: 0.75 gallons per minute
Dimensions: 3.9" wide x 3.6" deep x 16.7" tall
6
Waterdrop 15UB-UF 0.01 μm Ultra Filtration Under Sink Water Filter System for Baçtёria Reduction, Reduces Lead, Chlorine, Bad T...
Type: Under sink
Filtration Process: Multistage filtration
Filter Lifespan: 16,000 gallons
Flow Rate: 0.75 gallons per minute
Dimensions: 3.9" wide x 3.6" deep x 16.7" tall
7
WATERDROP
Waterdrop K19-S Countertop Reverse Osmosis System, 4 Stage Reverse Osmosis Water Filter Countertop, 3:1 Pure to Drain, Reduce P...
Type: Countertop
Filtration Process: 4-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 75 gallons per day
Dimensions: 7.9" wide x 13.8" deep x 16.3" tall
7
Waterdrop K19-S Countertop Reverse Osmosis System, 4 Stage Reverse Osmosis Water Filter Countertop, 3:1 Pure to Drain, Reduce P...
WATERDROP
Type: Countertop
Filtration Process: 4-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 75 gallons per day
Dimensions: 7.9" wide x 13.8" deep x 16.3" tall
8
8
Waterdrop Gravity-fed Water Filter System, Reduces Lead and up to 99% of Chlorine, NSF/ANSI 42&372 Standard, with 2 Black Carbo...
Type: Countertop
Filtration Process: Gravity-fed
Filter Lifespan: 6,000 gallons
Flow Rate: Not indicated
Dimensions: 8.5" diameter x 20.4" tall
9
9
SimPure Whole House Water Filter System, 2 Stages Clear Home Water Pre-Filtration with Carbon and Sediment Filters, Reduce Odor...
Type: Whole-house
Filtration Process: 2-stage
Filter Lifespan: Not indicated
Flow Rate: 15 gallons per minute
Dimensions: 14.2" wide x 7.5" deep x 15.5" tall
10
10
SimPure V7 Under Sink Water Filter, 5-Stage Stainless Steel Water Filtration System Direct Connect to Kitchen Faucet, Reduces 9...
SIMPURE
Type: Under sink
Filtration Process: 5-stage
Filter Lifespan: 20,000 gallons
Flow Rate: 1.6 gallons per minute
Dimensions: 3.6" wide x 3.6" deep x 12" tall
We also considered 10 others:
Our Top Choice
1
WATERDROP
Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI 42 & 58 & 372 Certified, Under Sin...
Type: Under sink
Filtration Process: 8-stage with reverse osmosis
Filter Lifespan: 2,200 gallons
Flow Rate: 0.42 gallons per minute
Dimensions: 5.7" wide x 18.1" deep x 17.7" tall
1
Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI 42 & 58 & 372 Certified, Under Sin...
WATERDROP
Type: Under sink
Filtration Process: 8-stage with reverse osmosis
Filter Lifespan: 2,200 gallons
Flow Rate: 0.42 gallons per minute
Dimensions: 5.7" wide x 18.1" deep x 17.7" tall
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