How to Install a Two-handle AquaSource Faucet

Two-handle AquaSource faucet water supply pipes

The Spruce / Kevin Norris

Project Overview
  • Working Time: 1 - 2 hrs
  • Total Time: 1 - 2 hrs
  • Skill Level: Beginner
  • Estimated Cost: $25 to $100

AquaSource is an economy faucet brand sold primarily by Lowes, though it is also available through some hardware stores and online retailers. Although the brand name is owned and marketed by Lowes, a publicly traded company, the faucet hardware is manufactured by a number of different companies, most notably the plumbing giant, American Standard. AquaSource faucets, therefore, bear a striking similarity to the more expensive American Standard faucets.

The AquaSource brand offers both single-handle and double-handle faucets for kitchens and baths, and its designs typically use ceramic disk cartridges, known for their reliability. AquaSource faucets are considered to be fairly good products available at very affordable prices, but with most models, you will need to supply your own supply tubes, which are not provided in the kit. Some installers have complained that a sink's existing supply tubes are often too short to reach the tailpieces on AquaSource faucets, requiring you to purchase new supply tubes rather than reuse the old ones.

Before You Begin

Installation of an AquaSource faucet will not pose any surprises to a DIYer who has installed other faucets, since the installation process is now quite similar for most modern sink-mounted kitchen and bathroom faucets. While configurations may look a little different, the installation always involves mounting the faucet body to the sink deck, then attaching hot and cold supply tubes to link the fixture shutoff valves to the faucet's tailpieces or water inlet fittings.

The installation details described below are for two-handle WaterSense bathroom faucets from AquaSource. The instructions should also work for other AquaSource faucets, as well as top-mounted bathroom faucets from other manufacturers. AquaSource bathroom faucets are normally sold as kits that include the pop-up drain stopper and drain fitting. This demonstration project, therefore, describes that installation, as well.

What You'll Need

Equipment / Tools

  • Basin wrench
  • Channel-type pliers
  • Adjustable wrench


  • New AquaSource faucet
  • 2 Water supply tubes (if needed)
  • Silicone sealant


Materials and tools to install two-handle AquaSource faucet

The Spruce / Kevin Norris

  1. Shut Off the Water

    First, shut off the water supply to the old faucet—usually by turning off the fixture shutoff valves.

    Water supply shut off underneath sink

    The Spruce / Kevin Norris

  2. Disconnect the Water Supply Tubes

    Use a basin wrench or channel-type pliers to disconnect the flexible hot and cold water supply tubes from the old faucet. On most models, the supply tubes will be connected to the tailpieces on the faucet.

    If you will be replacing the water supply tubes, also disconnect the old tubes from the outlet nipples on the fixture shutoff valves.

    Water supply tubes disconnected with wrench from faucet

    The Spruce / Kevin Norris

  3. Remove the Old Faucet

    To remove the old faucet, use a long-handled basin wrench to reach up behind the back of the sink basin and grip the mounting nuts threaded on the faucet's tailpieces. Turn the nuts counter-clockwise to remove them, then remove the faucet from the sink or countertop deck. You may need to apply some force to break the faucet free of its bond to the sink deck.

    After removing the faucet body, clean the sink deck of any plumber's putty or gasket material used to seal the faucet against the sink.


    The manner in which a faucet is secured can vary, depending on the manufacturer and design. Some faucets are held in place with mounting nuts threaded onto two tailpieces, while other faucets may be held by a single mounting nut threaded over a center tailpiece. Some may even have three mounting nuts—one for each handle tailpiece and one for the spout.

    Long-handled basin wrench gripping nuts to remove faucet

    The Spruce / Kevin Norris

  4. Attach the New Faucet

    Prepare the sink deck as directed by the faucet instructions. This may involve laying down a bead of silicone sealant or plumber's putty, or positioning a rubber or foam gasket over the sink deck.

    Position the faucet onto the sink, inserting the tailpieces through the holes in the sink. Many faucets will have three tailpieces.

    From below the sink, thread the mounting nuts onto the faucet's tailpieces. Tighten them as far as you can by hand, then snug them up with a basin wrench. As you tighten the nuts, check to make sure the faucet body remains straight and centered.

    New faucet inserted into sink deck hole

    The Spruce / Kevin Norris

  5. Connect the Water Supply Tubes

    If you are using new water supply tubes, connect one end of each tube to an outlet nipple on the fixture shutoff valve. Connect the other end to the faucet's valve tailpiece or water inlet nipple, using channel-type pliers or an adjustable wrench. (The left tailpiece normally receives the hot water connection, the right tailpiece receives the cold water.) If you have trouble reaching the nipples, use a basin wrench for these connections.

    Water supply tube connected to fixture shutoff valve

    The Spruce / Kevin Norris

  6. Connect the Linking Hose (If Needed)

    With AquaSource faucets that are installed in three parts—two handle valves and a center spout—you must also attach a flexible hose that brings water from the faucet's outer handle valves to the center spout. If so, use channel-type pliers or an adjustable wrench to attach this hose onto the appropriate nipples. There are three connections to make: one to the center spout body, and one each to the handle valves.

    Flexible linking hose connected to center spout body

    The Spruce / Kevin Norris

  7. Begin Installing the Drain Assembly

    If your faucet kit includes a drain assembly, begin by disconnecting the sink's old drain trap and removing the existing drain fitting.

    Next, separate the new pop-up drain components, which generally will be loosely assembled when packaged in the kit. Remove the stopper from the drain body, then slide the mounting nut and foam gasket off the bottom of the drain body.

    Apply the provided gasket or apply some silicone sealant to the underside of the drain flange. (This varies, depending on the faucet model.)


    Installation of the drain assembly varies somewhat depending on the faucet model. On some models, the drain assembly is inserted from above the sink; on others, it is inserted up through the drain opening from below, then threaded onto the drain flange.

    Stopper removed from pop-up drain body

    The Spruce / Kevin Norris

  8. Attach the Drain Assembly

    Insert the end of the drain assembly down through the sink's drain opening. Thread the foam gasket and mounting nut onto the tailpiece from below the sink, and tighten the nut down until the gasket compresses tightly against the bottom of the sink basin.

    Make sure the opening for the ball rod remains facing directly toward the back of the sink as you tighten down the drain assembly.

    Tailpiece sticking out through sink drain opening

    The Spruce / Kevin Norris

  9. Install the Pop-Up Stopper

    Insert the stopper plug into the drain opening, then from under the sink, insert the ball rod into the drain assembly and tighten the sleeve to keep it in place. The end of the rod should fit into an opening on the pop-up stopper.

    From above, insert the pop-up lift rod down through the hole in the faucet body. From below the sink, attach the perforated strap to the lift rod. (The button on the strap can be pushed to open and locks into place when released.) Attach the ball rod to the lift rod after adjusting the height of the stopper.

    Pop-up stopper inserted into sink drain opening

    The Spruce / Kevin Norris

  10. Complete the Installation

    Reattach the drain trap to the sink drain tailpiece, then turn on the water and check all the water supply and drain fittings for leaks; tighten them slightly if necessary. Allow the water to run for a couple of minutes, as some faucet leaks are not obvious right away.

    To check for leaks at the pop-up drain, lower the stopper and fill the sink up with water. Release the water and look under the sink for leaks around the drain.

    Water running from AquaSource faucet to check for leaks

    The Spruce / Kevin Norris