Single Hole Faucets

Single Hole Faucet Products

Products in this category fall into six functional groups.

Single Handle Lever Faucets

Most single handle bathroom faucets use one lever to regulate both flow and temperature. The lever connects to a cartridge or ceramic disc valve inside the faucet body, so one hand controls the full hot and cold mix.

Low-Arc and Standard Height Faucets

Low-arc and standard spouts suit undermount and drop-in basins set into the countertop. Check spout reach so the stream lands near the drain opening rather than against the back of the bowl.

Tall Faucets for Raised Basins

Tall models raise the spout above vessel and above-counter basins. Match spout height to the basin rim plus room for hands. Compare other mounting types in the full range of bathroom sink faucets.

WaterSense and Low-Flow Faucets

WaterSense-labeled faucets have a maximum flow rate of 1.5 gallons per minute (gpm), while some models operate at 1.2 gpm. When selecting a low-flow bathroom faucet, consider the flow rate, valve type, and water efficiency requirements.

Faucets With Deck Plates for 1 or 3-Hole Sinks

Some single hole sink faucets ship with an optional deck plate that covers three holes on 4 in. centers. Where none is included, separate faucet deck plates seal the deck and conceal unused holes.

Faucets Sold With Pop-Up Drains

Many single hole faucet sets pair the faucet with a pop-up drain in a matching finish. Confirm whether the drain is built for a basin with or without an overflow before installation.

How Single Hole Faucets Work and Where to Use Them

How the Valve Operates

The handle moves a cartridge or ceramic disc valve that meters hot and cold water into one outlet. Seals inside the valve stop flow when the handle is closed. A steady drip usually points to a worn cartridge, a damaged seal or O-ring, or debris on the valve seat, so check those parts first and replace them with the manufacturer's matching part.

Residential Vanities

A single hole vanity faucet suits narrow vanities, powder rooms, and countertops with limited deck space around the basin. One mounting hole also leaves fewer joints on the deck to clean.

Commercial and Multi-Unit Restrooms

For multi-unit and commercial work, specifying one model across all units simplifies stocking cartridges and repair parts. Check local code for public lavatory flow limits, accessibility requirements, and lead-free certification before specifying.

Key Specifications and Planning Steps

Hole Spacing and Deck Plates

On multi-hole sinks, measure center-to-center spacing between the outer holes. A standard deck plate covers 4 in. centers; wider spacing needs a plate sized to that spread, or a different faucet type.

Deck Thickness

Stone, quartz, and solid-surface tops can exceed a faucet's mounting range. Measure the deck and compare it to the maximum deck thickness listed on the spec sheet before drilling or ordering.

Supply Connections

Inlet size and connection type vary by model. Confirm the fitting type at the faucet and at the angle stops, and check that hose length reaches without strain. Faucet and sink supply kits cover common lengths and adapters.

Drain and Overflow

Basins with an overflow take a slotted drain. Basins without an overflow need an unslotted drain, since a slotted drain in that basin can leak at the drain body.

Flow Rate

Federal law limits lavatory faucets to 2.2 gpm at 60 psi. Most current single hole bathroom faucets run lower, and public lavatories are commonly limited to 0.5 gpm under model plumbing codes.

Choosing the Right Single Hole Faucet

Start with the existing hole layout. One hole limits the choice to single hole faucets, while a three-hole deck can also take a centerset or widespread faucet that uses every hole. For small vanities, compare a single hole model with a mini-widespread faucet, which uses three holes with separate handles.

Next, match finish and design. Single hole faucet collections coordinate the faucet with shower trim and accessories, and single hole faucet styles range from traditional to modern bathroom faucets in single hole versions.

For accessible restrooms, check one-hand operation without tight grasping or wrist twisting, operating force of 5 lbf or less, and reach at the installed location. Lever handles help, but the full installation determines compliance, so verify the project's requirements before specifying.

Frequently Asked Questions

1. Where can I source a single hole faucet in volume for a multi-unit remodel?

Plumbing supply distributors stock single hole bathroom faucets from several manufacturers, so you can compare flow rate, finish, and included parts across brands. Specifying one model for every unit simplifies ordering, installation, and future cartridge replacement.

2. What are my options for a 1.2 gpm WaterSense faucet in brushed nickel?

Several manufacturers offer WaterSense-labeled bathroom faucets in brushed nickel with a flow rate of 1.2 gallons per minute (gpm). When comparing options, consider the faucet’s finish, mounting configuration, valve type, and drain compatibility.

3. Which fits my sink: a single hole, centerset, or widespread faucet?

Count the holes in the sink. One hole takes single hole faucets only. Three holes on 4 in. centers fit a centerset faucet or a single hole model with a deck plate. Three holes spaced 6 in. or wider, most often 8 in., call for a widespread faucet.

4. For a small vanity, should I use a single hole or a mini-widespread faucet?

A single hole faucet uses the least deck space and needs one hole. A mini-widespread faucet has separate handles and needs three holes. Choose based on the existing hole layout and the deck width behind the basin.

5. How do I choose between a standard single hole faucet and a vessel faucet?

Match spout height to the basin. Undermount and drop-in basins sit at counter level and take standard or low-arc spouts. Vessel and above-counter basins sit higher and need a tall faucet whose spout clears the rim with room for hands.

6. Can a single hole faucet go on a sink with three holes 4 inches apart?

Yes. Add a deck plate that covers three holes on 4 in. centers. Some single hole sink faucets include one in the box; for others, order a separate deck plate in a matching finish.

7. How do I check if a faucet will mount through a thick stone countertop?

Measure the deck thickness at the mounting hole, then compare it to the maximum deck thickness on the faucet's spec sheet. If the countertop is thicker than the listed limit, choose a different model or ask the manufacturer whether a longer mounting kit is available.

8. What supply connections and hose sizes should I check before installation?

Check the inlet size and fitting type on the faucet, the outlet size on the angle stops, and the distance between them. Connections vary by model, so confirm both ends match and that the hoses reach without kinking.

9. What drain do I need for a basin without an overflow?

Use an unslotted pop-up or grid drain built for non-overflow basins. A slotted drain in that basin can let water escape at the drain body. Check whether the drain packaged with the faucet suits the basin before installing.

10. Why is my single handle faucet dripping, and which parts should I check?

Most drips in single handle bathroom faucets come from a worn cartridge, a damaged seal or O-ring, or debris on the valve seat. Shut off the supply, remove the handle, inspect these parts, and replace them with the manufacturer's matching cartridge or seal kit.

11. What flow rate should a WaterSense-labeled faucet have?

WaterSense-labeled bathroom sink faucets flow no more than 1.5 gpm and no less than 0.8 gpm at 20 psi. Many models run at 1.2 gpm. Public lavatories may face lower limits under local code, commonly 0.5 gpm.

12. What should I check when selecting a faucet for an ADA-compliant commercial restroom?

Confirm the faucet operates with one hand, without tight grasping, pinching, or twisting of the wrist, and with no more than 5 lbf of force. Installation also matters, including reach range, knee clearance, and pipe protection under the lavatory. Check the specific requirements that apply to the project.

13. Does a single hole faucet include a drain, supply lines, and a deck plate?

It depends on the model. Some single hole faucet sets include a pop-up drain, braided supply hoses, and an optional deck plate, while others ship as the faucet only. Check the included components on the spec sheet before ordering.

14. Which modern styles come in a single hole design for a vanity?

Single hole faucet styles include square, straight-lined, and slim-profile designs as well as traditional curved spouts. Many modern bathroom faucets come in single hole versions, and a single hole vanity faucet keeps the deck clear around compact basins.

15. How do I match a faucet finish to other fixtures in the same collection?

Choose the faucet and other fixtures from the same manufacturer collection and finish. Single hole faucet collections often include matching shower trim, tub fillers, and accessories, so finishes such as brushed nickel stay consistent across the room.