A separate waterway, and a filter you keep buying · review
A commercial-style pull-down with a built-in filtered-water outlet on its own independent line, 1.6 gpm filtered, brass body and lifetime warranty — the filter system is sold separately.
The first thing to know: no filter is included. This faucet delivers water from a system installed under the sink. KRAUS names its own FS-1001 as a pairing; any under-counter system with a dedicated outlet line will do.
The reason to buy a dedicated filter faucet instead of drilling a second hole is that the filtered water has its own path. DuoPure keeps the tap and filtered supplies in two independent lines, and KRAUS states it as protection against cross-contamination.
1.6 gpm filtered is published, which few listings give. Expect the real figure to depend on the filter: a reverse osmosis system feeding from a storage tank delivers less than an inline carbon filter.
A commercial spout stands tall: 19-1/4 inches in the bullets, 18.75 in the table. Measure under any cabinet or window before ordering.
Available at around $329.95 on Amazon.com when we checked on October 29, 2026, for delivery to a US address.
Stock and prices on Amazon.com move without notice; the button above opens the live listing.
Prices quoted in this text were read on October 29, 2026. The live price is at the top of the page.
| Filtered waterway | DuoPure: two independent water lines, tap and filtered, stated to protect against cross-contamination |
|---|---|
| Filter fitting | Works with most under-counter filtration systems including reverse osmosis; KRAUS suggests its FS-1001 system. No filter is included |
| Stated filter capacity | Not applicable — no filter is supplied; filtered flow stated at up to 1.6 gpm |
| Faucet hole diameter | 1.5 in — spec table; single hole |
| Spout height | 6.38 in — spec table; overall height 19-1/4 in in the bullets, 18.75 in in the table |
| Spout reach | 8.63 in — spec table |
| Cartridge | Ceramic cartridge — stated; one handle with 90° forward rotation controls both tap and filtered water |
| Body material | Metal body, brass in the spec table; nylon water lines; lead-free |
| Warranty | Lifetime — spec table |
| Amazon reference | B08BBF9F7B |
| EAN | 0846639054256 |
No. It delivers filtered water from a system you install under the sink. KRAUS states it works with most under-counter systems, reverse osmosis included, and suggests its own FS-1001. Budget for the filter and its cartridges separately.
A filter faucet with a shared passage can let tap water linger where filtered water comes out. DuoPure keeps the two supplies separate from valve to outlet. It is the design point that separates a dedicated filter faucet from a cheap adapter.
It needs a single 1.5-inch hole and roughly 19 inches of height above the deck. Its forward-rotating handle helps against a backsplash; the height is what rules it out under a cabinet.
Same category, nearby prices, between bathroom fittings. What remains is the specifications every one publishes — half empty, a column is no use.
| Model | Price | Filtered waterway | Filter fitting | Stated filter capacity | Faucet hole diameter |
|---|---|---|---|---|---|
| KRAUS Bolden water filter faucet | $330 | DuoPure: two independent water lines, tap and filtered, stated to protect against cross-contamination | Works with most under-counter filtration systems including reverse osmosis; KRAUS suggests its FS-1001 system. No filter is included | Not applicable — no filter is supplied; filtered flow stated at up to 1.6 gpm | 1.5 in — spec table; single hole |
| GIMILI 3-in-1 filter kitchen faucet | $136 | A dedicated pure water outlet — stated; for a purification system bought separately | Not specified beyond connection to a separate water purification device; none included | Not applicable — no filter is supplied | Not stated as a diameter; single hole, deck plate included |
| FORIOUS 2-in-1 purified water faucet | $100 | A built-in drinking water faucet on its own handle; whether its line is fully separate from the tap water is not stated | Non-air-gap; compatible with most under-counter reverse osmosis and filtration systems, not included — stated | Not applicable — no filter is supplied | Not stated as a diameter; single hole, deck plate included |
This model is listed on Amazon.com, at ≈ $330 at the last reading. Listed is not the same as in stock: availability changes daily, and the buy box shows the live price.
Details checked on October 29, 2026.
A kitchen adding or keeping an under-sink filter, where a second faucet hole is not wanted
Specifications: the manufacturer sheet for bathroom fittings and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Single hole · pull-down faucet + drinking water tap, 2 handles · stream, spray, pause · 18 in hose · 1.8 gpm at max 80 psi · SUS304 · NSF 61, DOE · non-air-gap · filter not included
A pull-down kitchen faucet with a built-in drinking water tap on a second handle, for an under-sink filter or RO system you supply — NSF 61 and DOE stated, and non-air-gap.
Best for: A budget way to bring an under-sink filter's water to the main faucet
≈ $100
Single hole, deck plate included · 3-in-1: hot, cold and dedicated pure water outlet · 20 in tall · 5.9 in spout height, 8.67 in reach · stream and spray · SUS304 · filter not included
A commercial-style 3-in-1 kitchen faucet with a dedicated pure water outlet, 20 inches tall, in forged SUS304 — with every dimension and its hose threads published, and no filter included.
Best for: A tall, open kitchen sink area with an under-sink filter already in place
≈ $136
8 settings incl. 2-mode power wash · anti-clog nozzles · 72 in stainless hose · overhead and low wall brackets · 1.8 gpm · ABS · chrome
A handheld shower with eight settings, two of them a fan-shaped power wash for tub and tile, a 72-inch hose and a second low bracket — 1.8 gpm, in chrome ABS.
Best for: A shared bathroom where the shower also cleans the tub, rinses a dog or serves someone seated
≈ $30
