Waterdrop · Under-sink filter
Waterdrop 15UC: what it removes and what it costs
Model: 15UC (WD-15UC)
The Waterdrop 15UC is certified (NSF/ANSI 42) to reduce chlorine. For 2 people drinking and cooking with it, replacement filters cost about $15 a year.
1
certified reductions we track
0.2¢
filters per gallon at rated life
Price checked 2026-10-23. We may earn a commission.
What the Waterdrop 15UC removes
"Certified" means a certifier (NSF, WQA, IAPMO or CSA) lists this exact product for that reduction claim; the listing is linked. "Brand test only" means Waterdrop cites a lab report but no certifier lists the claim. See certified vs. tested.
| Contaminant | Status | Evidence |
|---|---|---|
| Chlorine | Certified | IAPMO R&T listing, NSF/ANSI 42 ("Chlorine") |
Not verified, either way (no certification or brand claim): PFAS, Lead, Chloramine, Fluoride, Arsenic, Nitrate, Chromium 6, Mercury, Microplastics, Cysts, VOCs, TDS, Bacteria and viruses, Iron, Copper, Uranium, 1,4-dioxane.
What it costs to run
Yearly cost = replacements per year × filter price, for each filter it uses; a filter is replaced at its gallon rating or its month limit, whichever comes first. Water use: drinking and cooking water (0.28 gallons per person a day, EPA's average adult intake).
| Household | Gallons a year | Filters a year | Total a year | Per gallon |
|---|---|---|---|---|
| 1 person | 102 | $15 | $15 | 15¢ |
| 2 people | 204 | $15 | $15 | 7.6¢ |
| 4 people | 409 | $15 | $15 | 3.8¢ |
Per-gallon costs in the table are for real use, so they also count any filter replaced at its month limit before it reaches its gallon rating. At rated filter life alone, filters cost 0.2¢ a gallon (the figure at the top of this page).
Replacement filters
| Filter | Rated life (gallons) | Rated life (months) | Price |
|---|---|---|---|
| WD-RF15 replacement | 19,000 Source noteConflict on brand product page: overview says 16,000 gal / 2 years, spec table says 19,000; replacement page says 19,000 waterdropfilter.com | 24 Source note | $30.99 Source noteSame $30.99 price for RF10/RF15/RF17 waterdropfilter.com |
Specs
- Type
- Under-sink filter
- Price
- $60
Source note
List $59.99; sale $47.99 seen 2026-10-23; brand store showed 'Sold Out' that day waterdropfilter.com
- Installation
- DIY (under-sink or inline fittings)
- Flow rate
- 0.75 gal/min
Source note
Not stated on brand page; IAPMO lists WD-15UC at 0.75 gpm / 19,000 gal and, in a second section, 1 gpm / 24,420 gal; brand FAQ cites 2.0 gpm at 60 psi myplc.iapmo.org
- Needs power
- No
Compare the Waterdrop 15UC
Common questions
What does the Waterdrop 15UC remove?
The Waterdrop 15UC is certified (NSF/ANSI 42) to reduce chlorine. For 2 people drinking and cooking with it, replacement filters cost about $15 a year.
Does the Waterdrop 15UC remove PFAS?
It has no certifier listing or brand claim for PFAS reduction.
How much does the Waterdrop 15UC cost to run?
About $15 a year for 2 people ($15 for 1, $15 for 4), counting replacement filters, for drinking and cooking water (0.28 gallons per person a day, EPA's average adult intake).
Data checked 2026-10-23. 102 filters tracked.