Waterdrop 15UA Under Sink Filter review
By Daryna Klochko · Published · Specs checked Oct 13, 2026 · 
Scores 9.5/10, tied for 17th of the 32 under-sink filters we track. At $76.99 it costs less than half the category median of $199.50.
Low running costs: about $18 a year in cartridges, the lowest among the 32 under-sink filters that state one
You need a certified health claim: its listing covers chlorine, taste and odor only, unlike 29 of the 32 under-sink filters
- Price
- $76.99
- Certified for
- Chlorine
- Flow
- 0.75 gpm
- Cartridge life
- 19,000 gal
- Cost per year
- $18
- Warranty
- 1 year
Certification
Listed by IAPMO under NSF/ANSI 42 for Chlorine, checked Oct 13, 2026. Search the IAPMO listings
- Chlorine
The contaminants or other substances removed or reduced by this water treatment device are not necessarily in your water. Listing checked on Oct 13, 2026. What a listing means and what it doesn't
Specs and sources
Checked Oct 13, 2026 · source under each valueFiltration
Cartridges and install
Buying
Warranty, returns and shipping
Warranty: 1 year. Returns: 30 days. Shipping: not stated by the brand. Source: waterdropfilter.com, checked Oct 13, 2026.
Source: waterdropfilter.com, checked Oct 13, 2026.
Compared with similar under-sink filters
All 32 under-sink filters →| Model | Price | Certified for | Cost per year | Warranty | Score | Where to buy |
|---|---|---|---|---|---|---|
| Frizzlife MK99 Under Sink Water Filter | $69.99 | Lead · Cysts +1 | $80 | 1 year | 10/10 | Check price → |
| 3M Aqua-Pure Filtrete Maximum Under Sink System (3US-MAX-S01) | $73.25 | Lead · Cysts +7 | $140 | 1 year | 10/10 | See specs → |
| Waterdrop 15UA Under Sink FilterTHIS MODEL | $76.99 | Chlorine | $18 | 1 year | 9.5/10 | Check price → |
| A. O. Smith AO-MF Direct Connect Faucet Filter | $79.99 | Lead · Cysts +4 | $110 | 1 year limited | 10/10 | Check price → |
| Express Water StreamLine Direct Connect USC001 | $85.99 | Lead · Cysts +6 | $98 | 1 year | 9.75/10 | Check price → |