Waterdrop 10UA Under Sink Water Filter (WD-10UA)
Listings checked Oct. 16, 2026
Maker’s list price
$59
as of Oct. 16, 2026
Each replacement, at list price
- Replacement filter (WD-RF10)
- $25
Five years, household of 3
$159
2.9¢ per gallon
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List price from the maker’s site, checked Oct. 16, 2026. Prices change; the maker’s page is the final word.
What the listings say
| Standard | Certifier | Claims | Listing |
|---|---|---|---|
| NSF/ANSI 42 | IAPMO | Aesthetic Chlorine; Taste and Odor | Read the listing checked Oct. 16, 2026 |
Certified for, and claimed
Certified, by a listing
Claimed by the maker only
- sediment
- heavy metals, mercury among them
What it costs over five years
Household of 3, 3 gallons a day of drinking and cooking water. Installation not included.
| Item | Replaced | Count | Amount |
|---|---|---|---|
| System, with first media | — | 1 | $59 |
| Replacement filter (WD-RF10) | Every 12 monthsmonth rating | 4 | $100 |
Five-year total$159
Per gallon2.9¢
Worth knowing
IAPMO lists the WD-10UA, 15UA and 17UA under NSF/ANSI 42 only, for chlorine, taste and odor; no NSF/ANSI 53 or 401 listing was found for them at NSF, WQA or IAPMO. Waterdrop says the filter reduces heavy metals and is "third-party tested", which is not a certification. Capacity is the 11,000 gallons on IAPMO's listing and Waterdrop's specifications; Waterdrop's FAQ gives 8,000 gallons or 12 months, and the 12 months come first for a household of three. Price recorded is the $58.99 list price; Waterdrop showed $39.99 with a discount code on Oct. 16, 2026.
Other under-sink carbon filters
- iSpring US31 3-Stage Under Sink Water Filtration SystemNo listing
- Express Water StreamLine Direct Connect System (USC001)42 · 53 · 401
- Aquasana Claryum Direct Connect (AQ-MF-1)42 · 53 · 401
- Frizzlife SK99 Under Sink Water Filter42 · 53
- Multipure Aquaversa (MP750)42 · 53 · 401
- Brondell Coral UC300 Under Sink Water Filtration System42 · 53 · 401
- LARQ Under Sink Water Filter42 · 53
- A.O. Smith 2-Stage Under Sink Water Filter (AO-US-200)42 · 53 · 401
Where to go next
- Every under-sink filter, rankedBy what their listings cover, then what each costs over five years.The best under-sink water filters, ranked
- Your household’s costThe five-year cost at your own household size and daily use.Run it for your household
- NSF/ANSI 42, decodedWhat a NSF/ANSI 42 listing does and does not promise.About NSF/ANSI 42
- Every filter, checkedSide by side, with what each one can prove.All filters