Best Home Water Purifiers Updated February 2025
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Best Home Water Purifiers
2025 Buyer's GuideUpdated February 2025
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Best Home Water Purifier
Premium Pick

10.0

1

10.0

Waterdrop X12-Alkaline Mineral pH+ Reverse Osmosis System, NSF/ANSI 42&58&372 Certified, 1200 GPD RO Water Filter, 11-Stage Fil...
Type: Under sink
Filtration Process: 11-stage with reverse osmosis
Filter Lifespan: 6 months
Flow Rate: 1200 gallons per day
Dimensions: 6.3" wide x 18.2" deep x 16.7" tall
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Picked by 515 people this week!
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Picked by 515 people this week!
Picked by 515 people this week!
Best Home Water Purifier
Premium Pick

10.0

1
Waterdrop X12-Alkaline Mineral pH+ Reverse Osmosis System, NSF/ANSI 42&58&372 Certified, 1200 GPD RO Water Filter, 11-Stage Fil...
Type: Under sink
Filtration Process: 11-stage with reverse osmosis
Filter Lifespan: 6 months
Flow Rate: 1200 gallons per day
Dimensions: 6.3" wide x 18.2" deep x 16.7" tall
Picked by 515 people this week!
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9.8

2

9.8

SimPure Y7P-BW UV Countertop Reverse Osmosis Water Filter, NSF/ANSI 58 Certified, 4 Stage RO Water Filtration System, Water Pur...
Type: Countertop
Filtration Process: 4-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 418 gallons per day
Dimensions: 10" wide x 19" deep x 19" tall
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9.8

2
SimPure Y7P-BW UV Countertop Reverse Osmosis Water Filter, NSF/ANSI 58 Certified, 4 Stage RO Water Filtration System, Water Pur...
Type: Countertop
Filtration Process: 4-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 418 gallons per day
Dimensions: 10" wide x 19" deep x 19" tall
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9.6

3

9.6

Bluevua RO100ROPOT-UV Reverse Osmosis System Countertop Water Filter - 6 Stage Purification with UV and Remineralization, Count...
Type: Countertop
Filtration Process: 6-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: Not indicated
Dimensions: 10.8" wide x 14" deep x 15.5" tall
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9.6

3
Bluevua RO100ROPOT-UV Reverse Osmosis System Countertop Water Filter - 6 Stage Purification with UV and Remineralization, Count...
Type: Countertop
Filtration Process: 6-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: Not indicated
Dimensions: 10.8" wide x 14" deep x 15.5" tall
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9.4

4

9.4

SimPure Q3-600 Tankless Reverse Osmosis System, Under Sink Water Filter System 600 GPD, 7 Stage RO Water Filtration, NSF/ANSI 5...
Type: Under sink
Filtration Process: 7-stage with reverse osmosis
Filter Lifespan: 1,056 gallons
Flow Rate: 600 gallons per day
Dimensions: 6" wide x 12.5" deep x 13.5" tall
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9.4

4
SimPure Q3-600 Tankless Reverse Osmosis System, Under Sink Water Filter System 600 GPD, 7 Stage RO Water Filtration, NSF/ANSI 5...
Type: Under sink
Filtration Process: 7-stage with reverse osmosis
Filter Lifespan: 1,056 gallons
Flow Rate: 600 gallons per day
Dimensions: 6" wide x 12.5" deep x 13.5" tall
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9.3

5

9.3

Waterdrop G3P800 Reverse Osmosis System, 800 GPD Fast Flow, NSF/ANSI 42 & 53 & 58 & 372 Certified, 3:1 Pure to Drain, Tankless ...
Type: Under sink
Filtration Process: 9-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 800 gallons per day
Dimensions: 5.7" wide x 17.7" deep x 18.1" tall
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9.3

5
Waterdrop G3P800 Reverse Osmosis System, 800 GPD Fast Flow, NSF/ANSI 42 & 53 & 58 & 372 Certified, 3:1 Pure to Drain, Tankless ...
Type: Under sink
Filtration Process: 9-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 800 gallons per day
Dimensions: 5.7" wide x 17.7" deep x 18.1" tall
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9.2

6

9.2

SimPure Alkaline UV Reverse Osmosis System, NSF/ANSI 58 Certified, Tankless RO Water Filter System 400 GPD, pH+ Remineralizatio...
Type: Under sink
Filtration Process: 4-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 400 gallons per day
Dimensions: 9" wide x 16" deep x 18" tall
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9.2

6
SimPure Alkaline UV Reverse Osmosis System, NSF/ANSI 58 Certified, Tankless RO Water Filter System 400 GPD, pH+ Remineralizatio...
Type: Under sink
Filtration Process: 4-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 400 gallons per day
Dimensions: 9" wide x 16" deep x 18" tall
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9.1

7

9.1

iSpring RCC7, NSF Certified, High Capacity Under Sink 5-Stage Reverse Osmosis Water Filter, RO Drinking System, 75 GPD, Brushed...
Type: Under sink
Filtration Process: 5-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 75 gallons per day
Dimensions: 15.5" wide x 5.3" deep x 17.5" tall
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9.1

7
iSpring RCC7, NSF Certified, High Capacity Under Sink 5-Stage Reverse Osmosis Water Filter, RO Drinking System, 75 GPD, Brushed...
Type: Under sink
Filtration Process: 5-stage with reverse osmosis
Filter Lifespan: Not indicated
Flow Rate: 75 gallons per day
Dimensions: 15.5" wide x 5.3" deep x 17.5" tall
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Best Value
Popular

9.0

8

9.0

ZeroWater 52-Cup Ready-Read 5-Stage Water Filter Pitcher Dispenser with 5-Stage 0 TDS Zero Water Filter – IAPMO Certified to Re...
Type: Countertop
Filtration Process: 5-stage
Filter Lifespan: 15 gallons
Flow Rate: Not indicated
Dimensions: 9.4" wide x 14.2" deep x 10.4" tall
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Best Value
Popular

9.0

8
ZeroWater 52-Cup Ready-Read 5-Stage Water Filter Pitcher Dispenser with 5-Stage 0 TDS Zero Water Filter – IAPMO Certified to Re...
Type: Countertop
Filtration Process: 5-stage
Filter Lifespan: 15 gallons
Flow Rate: Not indicated
Dimensions: 9.4" wide x 14.2" deep x 10.4" tall
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8.8

9

8.8

Waterdrop 10UA Under Sink Water Filter System, Reduces PFAS, PFOA/PFOS, Lead, Chlorine, Bad Taste & Odor, Under Counter Water F...
Type: Under sink
Filtration Process: Single stage
Filter Lifespan: 8,000 gallons
Flow Rate: 2.5 gallons per minute
Dimensions: 3.6" wide x 3.9" deep x 12.3" tall
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8.8

9
Waterdrop 10UA Under Sink Water Filter System, Reduces PFAS, PFOA/PFOS, Lead, Chlorine, Bad Taste & Odor, Under Counter Water F...
Type: Under sink
Filtration Process: Single stage
Filter Lifespan: 8,000 gallons
Flow Rate: 2.5 gallons per minute
Dimensions: 3.6" wide x 3.9" deep x 12.3" tall
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8.7

10

8.7

Waterdrop 15UA Under Sink Water Filter System, Reduces Lead, Chlorine, Bad Taste & Odor, Under Counter Water Filter Direct Conn...
Type: Under sink
Filtration Process: 5-stage
Filter Lifespan: 16,000 gallons
Flow Rate: 0.75 gallons per minute
Dimensions: 3.9" wide x 3.6" deep x 16.7" tall
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Save 30%
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8.7

10
Waterdrop 15UA Under Sink Water Filter System, Reduces Lead, Chlorine, Bad Taste & Odor, Under Counter Water Filter Direct Conn...
Type: Under sink
Filtration Process: 5-stage
Filter Lifespan: 16,000 gallons
Flow Rate: 0.75 gallons per minute
Dimensions: 3.9" wide x 3.6" deep x 16.7" tall
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We also considered 10 others:

Our Top Choice

Best Home Water Purifier
Premium Pick

10.0

1

10.0

Waterdrop X12-Alkaline Mineral pH+ Reverse Osmosis System, NSF/ANSI 42&58&372 Certified, 1200 GPD RO Water Filter, 11-Stage Fil...
Type: Under sink
Filtration Process: 11-stage with reverse osmosis
Filter Lifespan: 6 months
Flow Rate: 1200 gallons per day
Dimensions: 6.3" wide x 18.2" deep x 16.7" tall
Read Full Review
Save 20%
Compare
Picked by 515 people this week!
Save 20%
Compare
Picked by 515 people this week!
Picked by 515 people this week!
Best Home Water Purifier
Premium Pick

10.0

1
Waterdrop X12-Alkaline Mineral pH+ Reverse Osmosis System, NSF/ANSI 42&58&372 Certified, 1200 GPD RO Water Filter, 11-Stage Fil...
Type: Under sink
Filtration Process: 11-stage with reverse osmosis
Filter Lifespan: 6 months
Flow Rate: 1200 gallons per day
Dimensions: 6.3" wide x 18.2" deep x 16.7" tall
Picked by 515 people this week!
Save 20%
Compare
Read Full Review

Compare Features

Filtration Process
Best Home Water Purifier
1. Waterdrop X12 Reverse Osmosis Water Filter
WATERDROP Preview WATERDROP Preview
WATERDROP
at Amazon
2. SimPure Y7P UV RO Water Filtration System
SIMPURE Preview SIMPURE Preview
SIMPURE
at Amazon
3. Bluevua RO100ROPOT-UV Reverse Osmosis System
BLUEVUA Preview BLUEVUA Preview
BLUEVUA
at Amazon
4. SimPure Q3-600 Tankless Reverse Osmosis System
SIMPURE Preview SIMPURE Preview
SIMPURE
at Amazon
5. Waterdrop G3P800 RO Water Filtration System
WATERDROP Preview WATERDROP Preview
WATERDROP
at Amazon
6. SimPure T1-400UV Water Filtration System
SIMPURE Preview SIMPURE Preview
SIMPURE
at Amazon
7. iSpring RCC7 RO Water Filtration System
ISPRING Preview ISPRING Preview
ISPRING
at Amazon
Best Value
8. ZeroWater Water Filter Dispenser
ZEROWATER Preview ZEROWATER Preview
ZEROWATER
at Amazon
9. Waterdrop 10UA Under Sink Water Filter System
WATERDROP Preview WATERDROP Preview
WATERDROP
at Amazon
10. Waterdrop 15UA Under Sink Water Filter System
WATERDROP Preview WATERDROP Preview
WATERDROP
at Amazon
Deal
Save 20% $100 Coupon — Save 25% + $30 Coupon $150 Coupon $110 Coupon Save 10% Save 8% + $4.65 Coupon 15% Coupon Save 30%
Deal Save 20% $100 Coupon — Save 25% + $30 Coupon $150 Coupon $110 Coupon Save 10% Save 8% + $4.65 Coupon 15% Coupon Save 30%
Type
Under sink Countertop Countertop Under sink Under sink Under sink Under sink Countertop Under sink Under sink
Type 		Under sink Countertop Countertop Under sink Under sink Under sink Under sink Countertop Under sink Under sink
Filtration Process
11-stage with reverse osmosis 4-stage with reverse osmosis 6-stage with reverse osmosis 7-stage with reverse osmosis 9-stage with reverse osmosis 4-stage with reverse osmosis 5-stage with reverse osmosis 5-stage Single stage 5-stage
Filtration Process 		11-stage with reverse osmosis 4-stage with reverse osmosis 6-stage with reverse osmosis 7-stage with reverse osmosis 9-stage with reverse osmosis 4-stage with reverse osmosis 5-stage with reverse osmosis 5-stage Single stage 5-stage
Filter Lifespan
6 months Not indicated Not indicated 1,056 gallons Not indicated Not indicated Not indicated 15 gallons 8,000 gallons 16,000 gallons
Filter Lifespan 		6 months Not indicated Not indicated 1,056 gallons Not indicated Not indicated Not indicated 15 gallons 8,000 gallons 16,000 gallons
Flow Rate
1200 gallons per day 418 gallons per day Not indicated 600 gallons per day 800 gallons per day 400 gallons per day 75 gallons per day Not indicated 2.5 gallons per minute 0.75 gallons per minute
Flow Rate 		1200 gallons per day 418 gallons per day Not indicated 600 gallons per day 800 gallons per day 400 gallons per day 75 gallons per day Not indicated 2.5 gallons per minute 0.75 gallons per minute
Dimensions
6.3" wide x 18.2" deep x 16.7" tall 10" wide x 19" deep x 19" tall 10.8" wide x 14" deep x 15.5" tall 6" wide x 12.5" deep x 13.5" tall 5.7" wide x 17.7" deep x 18.1" tall 9" wide x 16" deep x 18" tall 15.5" wide x 5.3" deep x 17.5" tall 9.4" wide x 14.2" deep x 10.4" tall 3.6" wide x 3.9" deep x 12.3" tall 3.9" wide x 3.6" deep x 16.7" tall
Dimensions 		6.3" wide x 18.2" deep x 16.7" tall 10" wide x 19" deep x 19" tall 10.8" wide x 14" deep x 15.5" tall 6" wide x 12.5" deep x 13.5" tall 5.7" wide x 17.7" deep x 18.1" tall 9" wide x 16" deep x 18" tall 15.5" wide x 5.3" deep x 17.5" tall 9.4" wide x 14.2" deep x 10.4" tall 3.6" wide x 3.9" deep x 12.3" tall 3.9" wide x 3.6" deep x 16.7" tall

Related Categories
Drinking Water Filtration SystemWater Filtration System (All)Reverse Osmosis FilterWater Filter SystemUndersink Water Filter SystemReverse Osmosis System
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Related Categories
Drinking Water Filtration SystemWater Filtration System (All)Reverse Osmosis FilterWater Filter SystemUndersink Water Filter SystemReverse Osmosis System
Related Categories
Drinking Water Filtration SystemWater Filtration System (All)Reverse Osmosis FilterWater Filter SystemUndersink Water Filter SystemReverse Osmosis System