Walk through almost any recent Canadian kitchen renovation and you'll find a second sink somewhere — a compact prep bowl in the island, a wet bar in the basement, a butler's pantry sink between kitchen and dining room. These secondary sinks earn their keep, but they raise a question most people don't consider until the plumber asks: what faucet goes on it? The usual answer is a bar faucet — a scaled-down tap built for small bowls and lighter duty — but "usual" is doing a lot of work in that sentence. Here's how to get the proportions right, when to match your main faucet, and when to skip the category entirely and put a full-size pull-down on your prep sink.
What a bar faucet actually is
A bar faucet — often sold as a prep faucet; in practice the terms are interchangeable — is simply a smaller kitchen faucet. The spout sits lower, the reach is shorter, and the body is slimmer, all scaled to a bowl that might be half the size of your main sink. Nearly all are single-hole, single-handle designs, because a small sink deck has no room for anything else. Most established brands, Riobel and Brizo among them, build bar versions of their popular kitchen collections, so the handle shape, spout profile, and finish carry over from the big tap to the little one.
Height and reach: getting the proportions right
Prep and bar bowls typically run a third to half the width of a standard kitchen sink, and they're often shallower. Two proportion rules follow:
- The arc shouldn't dominate the sink. A tall gooseneck that looks graceful over a big double-bowl looks like a crane over a small bar bowl — and on an island, that mismatch is visible from every seat in the room.
- The spout should land near the drain. Too short a reach and water runs down the back wall of the bowl; too long and it hits the front slope and splashes. Measure from the faucet hole to the centre of the bowl and pick a reach close to that number.
Shallow bowls splash more, full stop — favour a lower arc and a softly aerated stream over height and force. And check what's above the sink before you buy: wet bars and pantries often have shelving or upper cabinets directly overhead, so confirm the spout height clears them.
Match the main faucet — or don't
Whether the bar faucet should match the kitchen faucet depends mostly on whether you can see both at once.
- Same room, same sightline: coordinate. The easiest path is the bar version of your main faucet's collection — same finish, same handle, smaller scale. If that pairing doesn't exist, match the finish and keep the silhouette in the same family. Finish consistency matters more than shape.
- Different room: you're free. A basement wet bar doesn't answer to the kitchen. This is where people have fun — unlacquered brass over dark stone, matte black against a tiled pantry wall. Contrast works when it's clearly deliberate.
Mixed metals within one kitchen can work too, but treat it as a decision, not an accident: repeat the second finish somewhere else — cabinet pulls, a pendant — so the bar faucet isn't the only odd one out. Brands with deep finish programs, like Rubinet and Vogt, make it easier to land an unusual finish that still ties back to the room.
Filtered water and the jobs a second sink picks up
In many households the secondary sink quietly becomes the drinking-water station — kettle fills, water bottles, the ice maker's supply line. Plan for it. You have two clean options:
- A dedicated filtration faucet beside the bar faucet, fed by an under-sink filter. Mountain Plumbing, among others, makes slender point-of-use taps for exactly this. Filtered water stays separate from rinse water, so cartridges last longer.
- Running the bar faucet's cold line through the filter. One tap, one hole, simplest deck — but every cold draw goes through the cartridge, so you'll replace filters more often.
Either way, decide before the countertop is templated. Adding a hole to finished stone later is possible, but nobody enjoys paying for it.
Single-hole simplicity
The single-hole format is one of the genuine pleasures of a secondary sink: one drilling, no deck plate, a clean run of counter. When buying the sink and faucet together, count holes first — drop-in bar sinks often come pre-drilled, while undermounts put the holes in the countertop, which gives you full control. Our kitchen sink collection includes compact bar and prep bowls, and if your island will see real knife work, a small workstation sink with an integrated cutting board is worth a look — just confirm the spout clears the accessories sliding beneath it. Weighing stainless options? Our guide to stainless steel sink gauge explains what actually changes between 16 and 18 gauge.
When a full-size pull-down makes more sense
Here's the honest trade-off: if your "prep sink" is genuinely where food gets prepped — greens rinsed, cutting boards washed, pots filled because the island is where the cooktop lives — a small fixed-spout bar faucet will frustrate you daily. A sprayer you can pull into the bowl or aim into a stockpot is the most useful feature on any working faucet, and it doesn't stop being useful because the sink got smaller.
The good news: you no longer have to choose between scale and function. Most major brands now make pull-down bar faucets — compact bodies with the same sprayer mechanics as their full-size siblings. A quick way to sort your options:
| Secondary sink | Typical duty | Best faucet choice |
|---|---|---|
| Island prep sink | Produce, pots, cutting boards | Pull-down (compact or full-size) |
| Wet bar | Glassware, ice, drink-making | Fixed-spout bar faucet, optional filtration tap |
| Butler's pantry | Overflow dishes, flower vases | Compact pull-down |
| Coffee/tea station | Kettle and carafe filling | Low-profile bar faucet with filtered cold line |
The one caution with a full-size pull-down on a small sink is overspray — a strong spray in a shallow bowl will find your countertop. If the bowl is small and shallow, stay compact. You can compare fixed-spout bar models and pull-downs side by side in our kitchen faucet collection, which includes bar and prep sizes from Riobel, Brizo, and other lines we carry.
Frequently asked questions
What's the difference between a bar faucet and a kitchen faucet?
Scale, mostly. A bar faucet is shorter, has a smaller spout reach, and almost always mounts in a single hole. Internally the valving matches the brand's full-size faucets — you're not buying a lesser tap, just a smaller one.
Does my bar faucet have to match my kitchen faucet?
Only if you can see both at once. In an open kitchen, match the finish at minimum. In a separate room — a basement bar, a closed pantry — a contrasting faucet is a legitimate design choice, especially if its finish repeats elsewhere in that space.
Can I use a regular kitchen faucet on a prep sink?
Mechanically, yes — if the hole size and counter depth accommodate it. But over a very small or shallow bowl, a full-size faucet looks oversized and tends to splash. If you need pull-down function at a small sink, a compact pull-down bar faucet is the better-proportioned route.
Do I need a separate faucet for filtered water?
No, but it's often worth it. A dedicated filtration tap keeps rinse water out of the cartridge, so filters last longer, and it frees the bar tap for washing duty. If deck space is limited, running the bar faucet's cold side through the filter works — you'll just change cartridges more often. For more planning help like this, browse the rest of our buying guides.