Updated: June 2025

Countertop Reverse Osmosis Water Filters

Countertop Reverse Osmosis Water Filters

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Written by David Welch

Audited by Eliana Hayes

Written by David Welch

Audited by Eliana Hayes

Written by David Welch

Audited by Eliana Hayes

100+ Products Analyzed

50k Reviews Evaluated

30 Day Returns

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100+ Products Analyzed

50k Reviews Evaluated

30 Day Returns

Trending

Countertop Reverse Osmosis System RO Water Filter, 5-Stage Filtration, Real-time TDS Monitor, 3:1 Pure to Drain, Zero-Installation... read more

Best Overall Pick

Ecoviva Countertop Reverse Osmosis System RO Water Filter, 5-Stage Filtration, Real-time TDS Monitor, 3:1 Pure to Drain, Zero-Installation Portable Water Purifier-Black

WD-A1 Countertop Reverse Osmosis System, Hot and Cold Water Dispenser, NSF/ANSI 58 Standard, Bottleless Water Cooler, 6 Temp... read more

[Hot and Cold] Waterdrop WD-A1 Countertop Reverse Osmosis System, NSF/ANSI 58 Standard, Bottleless Water Cooler, 6 Temperature Settings Hot Cold & Room Water Dispenser, 2:1 Pure to Drain

CoreRO Countertop Reverse Osmosis System, NSF/ANSI 58 & 372 Certified, 6-Stage, Portable Reverse Osmosis Water Filter, Reduce... read more

Waterdrop CoreRO Countertop Reverse Osmosis System, NSF/ANSI 58 & 372 Certified, 6-Stage, Portable Reverse Osmosis Water Filter, Reduce PFAS, No Installation Required, BPA Free, WD-C1S

M1 Reverse Osmosis Countertop Water Purifier, Professional Grade 5-Stage RO Filtration, Purified Tap Water, 3-second Hot or Cool... read more

MELISSANI M1 Reverse Osmosis Countertop Water Purifier, Professional Grade 5-Stage RO Filtration, Purified Tap Water, 3-second Hot or Cool, Portable Water Purification System for Home- No Installation

K19H Countertop Reverse Osmosis System, Instant Hot Water Dispenser, Reverse Osmosis Water Filter Countertop, 3:1 Pure to... read more

【Instant Hot】 Waterdrop K19-H Countertop Reverse Osmosis System, Reverse Osmosis Water Filter Countertop, 3:1 Pure to Drain, 4 Temperature Options Water Dispenser, No Installation

Some other products we considered

AquaTru Connect Countertop Water Filtration Purification System for PFAS & Other Contaminants with Exclusive 4-Stage Ultra Reverse Osmosis Technology | with App & WiFi Capability

Connect Countertop Water Filtration Purification System for PFAS & Other Contaminants with...

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Waterdrop X16-Alkaline Tankless Reverse Osmosis System, NSF/ANSI 42&58&372 Certified, 1600 GPD RO Filter System, 11-Stage Filtration, UnderSink, 3:1 Pure to Drain, Alkaline Mineral pH+, BPA Free

X16 Tankless Reverse Osmosis System, NSF/ANSI 58&372 Certified, 1600 GPD RO Water Filter...

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Waterdrop K19-S Countertop Reverse Osmosis System, 4 Stage Reverse Osmosis Water Filter Countertop, 3:1 Pure to Drain, Reduce PFAS, No Installation Required, BPA Free

K19-S Countertop Reverse Osmosis System, 4 Stage Reverse Osmosis Water Filter Countertop, 3:1...

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About the Author

David Welch is a mechanical engineer with a passion for reviewing tech. On his free time, he enjoys spending time outdoors with his wife, three children, and german shepherd named Zeus.