As of Oct 27, 2026, 11:53 AM ET, the Replacement Ultrafiltration Undersink Water Filter WD-RF10/15/17-UF is listed online by Waterdrop (waterdropfilter.com) at $31.99–$55.99; the store's feed doesn't report stock.
Waterdrop sells it online at waterdropfilter.com. The price and stock here come from Waterdrop's own product feed, checked Oct 27, 2026.
| Option | Model no. | Price | Online availability | |
|---|---|---|---|---|
| Standard | 39398595231826 | $55.99 | Listed online (stock not reported) | Buy at waterdropfilter.com |
| Standard | 39398595166290 | $31.99 | Listed online (stock not reported) | Buy at waterdropfilter.com |
| Standard | 39398595199058 | $41.99 | Listed online (stock not reported) | Buy at waterdropfilter.com |
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At Waterdrop it costs $31.99 to $55.99, depending on the option, as of Oct 27, 2026.
Waterdrop's product feed doesn't say whether it's in stock. It lists 3 options at waterdropfilter.com; check there before you buy.
The replacement filters are designed to fit Waterdrop Undersink Water Filtration System (WD-UA/UB/UC series). Compatible with all three methods of connection, the filters bring you purified water from
