US
Waterdrop

Waterdrop WD-A2G Water Filtration System

  • Capacity: 1.2 gallons
  • Purification: Reverse Osmosis
  • Weight: 22 pounds
  • Dimensions: 15.9 × 8.2 × 15.7 inches

Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A reverse osmosis system with a useful 4.7 liter reserve, worth confirming install type directly with the seller before buying.

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ASIN: B0G2L3W4Z4Model: WD-A2GCategory: Water Filtration Systems

Overview

Reverse osmosis water filtration system from Waterdrop with a built-in 4.7 liter reserve, measuring 15.9 x 8.2 x 15.7 inches and weighing 22 lb.

The listing does not specify whether the WD-A2G installs under a sink or sits on a counter, so buyers should confirm placement before ordering if space is tight. Its 22 lb weight and 4.7 liter reserve suggest a self-contained tank design rather than a tankless plumbed-in unit, giving it a standing supply of filtered water between refills.

  • Reverse osmosis purification
  • 4.7 liter capacity
  • 15.9 x 8.2 x 15.7 in
  • 22 lb

Who it's for

Suits households wanting reverse osmosis filtration with a multi-liter standing reserve rather than a fill-per-use reservoir. Buyers who need a confirmed under-sink or countertop fit should check current listing photos first, since install type is not stated here.

Pros and cons

Pros
  • 4.7 liter standing reserve
  • Reverse osmosis purification
  • Self-contained tank design
Cons
  • Install type (countertop vs under-sink) not specified
  • 22 lb weight limits portability

Performance notes

A 4.7 liter reserve is enough for several glasses of filtered water between refills without waiting on the flow rate of a tankless system. The 22 lb weight is on the heavier side for a countertop unit but reasonable for a self-contained tank design.

Specifications

BrandWaterdrop
ModelWD-A2G
Capacity1.2 gallonslower than 82% of 46 water filtration systems
PurificationReverse Osmosis
Weight22 poundshigher than 75% of 41 water filtration systems
Dimensions15.9 × 8.2 × 15.7 inches
Dimensions15.9 x 8.2 x 15.7 in

Closest rivals on specs

Bluevua RO100ROPOT Countertop Reverse Osmosis System
  • Capacity 1.2 vs 0.4 gallons (+200%)
Berkey BER-CU2+BER-PF2 Water Filtration System
  • Capacity 1.2 vs 6 gallons (-80%)
  • Weight 22 vs 12 pounds (+83%)
iSpring RCC7P-AK Reverse Osmosis System with Pump
  • Capacity 1.2 vs 75 gallons (-98%)
  • Weight 22 vs 20 pounds (+10%)
Compare all side by side

Frequently asked questions

How large is the water reserve?

4.7 liters.

How much does the WD-A2G weigh?

22 lb.