Waterdrop G3P800 Tankless RO Review

Tankless RO with UV purification and 800 GPD, 99.99% contaminant removal.

Updated 2026-03-09 Independently reviewed
Waterdrop G3P800 Tankless RO
9.3/10
$449
20% Off — Limited Time, Check Now

Overview

The Waterdrop G3P800 is a tankless reverse osmosis system that removes 99.99% of contaminants including lead, fluoride, and PFAS. UV purification kills 99% of bacteria and viruses. It filters up to 800 gallons per day with a 3:1 pure-to-waste ratio and includes a remineralization filter for better taste.

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Pros & Cons

Pros

  • ✓99.99% contaminant removal
  • ✓UV purification
  • ✓800 GPD tankless
  • ✓3:1 waste ratio
  • ✓Remineralization filter
  • ✓No tank needed
  • ✓Smart faucet display

Cons

  • ✗Premium price
  • ✗Requires power
  • ✗Complex installation

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Specifications

Type Tankless RO
Contaminant Removal 99.99%
Capacity 800 GPD
Waste Ratio 3:1
UV Yes
Remineralization Yes
Installation Under sink
Faucet Smart display
Warranty 1 year

Our Verdict

The best overall under-sink filter—premium RO with UV and remineralization for the ultimate in drinking water quality.

9.3 / 10
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