Waterdrop WD-AS08 Water Filtration System
- Capacity: 8000 Gallons
- Purification: Activated Carbon
- Install Type: Under-Sink
- Material: NSF/ANSI Approved Components
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact, long-life under-sink carbon filter rated for 8,000 gallons, holding a 4.4 rating. Worth considering if under-sink space is tight and you want to avoid frequent cartridge changes.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B097YGDG2YModel: WD-AS08Category: Water Filtration Systems
Overview
The Waterdrop WD-AS08 is a compact under-sink filtration system using activated carbon, rated for 8,000 gallons of throughput. At roughly 4 by 4 by 12 inches and under 4 pounds, it fits inside a standard sink cabinet.
The 8,000-gallon capacity gives it a longer service life than typical faucet-mount filters, which usually need replacement every few hundred gallons. Its components are described as NSF/ANSI approved rather than the full system carrying independent certification, a distinction worth noting rather than assuming full-system testing.
- Activated carbon purification
- 8,000 gallon capacity
- Under-sink installation
- Dimensions 4.09 x 4.09 x 12 inches, 3.72 lb
Who it's for
Households wanting a single-stage under-sink carbon filter with a long filter life and a small cabinet footprint. Not the choice for buyers wanting reverse osmosis level filtration, since this is carbon-based, not membrane-based.
Pros and cons
- Long 8,000 gallon rated capacity
- Small footprint for under-sink installation
- Under 4 pounds, easy to mount
- Carbon filtration only, no reverse osmosis stage
- Components are NSF/ANSI approved rather than full-system certified
Performance notes
Activated carbon filtration works by adsorbing chlorine, some organic compounds, and taste and odor issues as water flows through the media. The 8,000-gallon rating suggests the cartridge is sized to last a typical household roughly six months to a year before replacement, though actual life varies with water usage and source quality.
Specifications
| Brand | Waterdrop |
|---|---|
| Model | WD-AS08 |
| Dimensions & fit | |
| Weight | 3.72 poundslower than 90% of 41 water filtration systems |
| Dimensions | 4.1 × 4.1 × 12 inches |
| Dimensions | 4.09 x 4.09 x 12 in |
| Capacity & performance | |
| Capacity | 8000 Gallons |
| Construction & materials | |
| Material | NSF/ANSI Approved Components |
| Compatibility & installation | |
| Install Type | Under-Sink |
| Other details | |
| Purification | Activated Carbon |
Closest rivals on specs
Apec Water ROES-PH75 Water Filtration System- Weight 3.72 vs 3.11 pounds (+20%)
Berkey RB4X2-BB+PF2 Water Filtration System- Weight 3.72 vs 4.4 pounds (-15%)
Frequently asked questions
Is the WD-AS08 a reverse osmosis system?
No, it uses activated carbon filtration, not a reverse osmosis membrane.
How long does the filter last?
It is rated for 8,000 gallons of throughput, which typically covers several months to about a year depending on household use.
Where does it install?
It is designed for under-sink installation.