Waterdrop 15UA Under Sink Water Filter System
- 19000 gallons or up to 24 months filter life
- NSF/ANSI 42 & 372 certified by IAPMO, lead tested to NSF/ANSI 53
- 0.75 gpm at 60 psi tested flow
- Cold municipal water only, 35 to 100 F
- Up to 700 ppm TDS supply
- Under 3 minute install, 3 second filter swap
- Replacement filter WD-RF15
Last refreshed Sep 11, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A long-life under-sink carbon filter for city water that connects to your current faucet and goes two years between cartridges. The longer housing needs more cabinet height, and it is not for well water.
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ASIN: B083NR5DVYModel: 15UACategory: Undersink & Countertop Water Filters
Overview
Homeowners who want fewer cartridge changes get a direct-connect carbon filter rated for two years of city water. It plugs into the cold line with push-to-connect fittings and feeds the faucet already on the sink, so nothing is drilled.
Two years per cartridge halves the number of swaps compared with shorter-life units, and the lead reduction is third-party lab tested. The extra filter media makes the housing taller, so measure the cabinet first.
Who it's for
Busy kitchens on municipal supply get chlorine and lead reduction at the main tap with rare maintenance. Homes on well water or hot water lines are outside its design.
Pros and cons
- Two-year cartridge life
- Lead reduction lab tested
- No plumber or drilling
- Fast cartridge swap
- Taller housing than shorter-life units
- Cold municipal water only
- Coconut carbon allergy note
- Does not lower TDS
Performance notes
Contaminant reduction depends on contact time in the carbon block, and the larger media volume extends capacity rather than raising flow. Sediment loading gradually slows output, and the enlarged dirt holding area delays clogging.
Specifications
| Brand | Waterdrop |
|---|---|
| Model | 15UA |
| Dimensions & fit | |
| Item Dimensions L X W X H | 3.9 x 3.6 x 16.7 inches |
| Item weight | 1.63 kg |
| Capacity & performance | |
| Capacity | 19000 gallons |
| Maximum Flow Rate | 0.75 gpm at 60 psi |
| Filter Life Cycle | 2 years |
| Lowertemperature Range | 35 F |
| Upper Temperature Rating | 100 F |
| Power & efficiency | |
| Power Source | Mechanical water pressure |
| Compatibility & installation | |
| Installation Type | Under sink |
| Compatible Water Purifier Models | Replacement filter WD-RF15 |
| Included components | |
| Included Components | System, 2 hoses, 3/8-1/2 convertor set, 2 screws, Teflon tape |
| Warranty & support | |
| Warranty Description | 1 year manufacturer |
| Supported Water Tds Level Maximum Ppm | 700 |
| Other details | |
| Purification Method | Activated carbon, multistage |
| External Testing Certification | NSF/ANSI 42 & 372 (IAPMO), NSF/ANSI 53 lead (third-party lab) |
Frequently asked questions
Do I need a plumber to install the Waterdrop 15UA?
No. It connects to the cold water line with push-to-connect fittings in less than 3 minutes, using the 3/8 inch hose and the 3/8-1/2 inch converter.
Will the Waterdrop 15UA fit under my sink?
It measures 3.9 x 3.6 x 16.7 inches. The longer filter life needs more media, so check your cabinet height first.
Can it filter hot water?
No. It is for cold municipal water only, between 35 and 100 F.
Does it reduce lead?
It was tested by a third-party lab against NSF/ANSI 53 for lead. Its IAPMO certifications cover NSF/ANSI 42 and 372.