There are circumstances when the best water source is already in your kitchen, and you’d just prefer to connect a garden hose underneath your sink. This could be the situation if there is no external water source or if it is in an inconvenient location.

You’ve probably already seen a lot of guides on how to connect a hose to a sink faucet. If you use your hose frequently, having to connect and disconnect it every time you need it is inconvenient. We can fix this by installing a new hose bib with a shut-off valve under your sink. You may then place an expandable garden hose under your sink to keep it attached while still allowing you to utilize your sink’s faucet.

Let’s take a look at the supplies and tools you’ll need, as well as a step-by-step tutorial on how to install a hose spigot beneath your kitchen sink. If you’re ready, hop on!

Garden hose connector

Garden hose connectors are metal or plastic nuts and bolts used to connect a hose to a range of tools. A customer should have a thorough understanding of the best water hose fittings before acquiring one. There are many different types of garden hose connectors to pick from. It’s also challenging to figure out which material is appropriate for your needs. You should know what water hose fittings and adapters you’ll need before learning how to connect a water hose. Fittings made of plastic, brass, or aluminum are commonly utilized.

Brass fittings, in my opinion, are far more useful than any other. It’s a little on the pricey side, and it’s a little heavier than other connectors. It, on the other hand, does not rust and comes with both male and female adapters. Plastic connections, on the other hand, are a less expensive and lighter solution. However, keep in mind that these plastic connectors wear out far more quickly than brass fittings. Their durability, on the other hand, is comparable to that of brass connections.

Garden hose connector size

Garden hose connections are available in various sizes. Water hose fittings and adapters come in a variety of diameters, including 1/2 inch, 3/4 inch, and 5/8 inch. However, 3/4-inch-diameter hose is widely used, and connections of the same size are also common. Because of its efficiency, 3/4 inch connectors are often used. This water hose’s pressure is likely to be higher than other sizes. As a result, it is used for a variety of tasks, including watering the garden, washing the car, and maintaining the yard at a professional level.

Hose splitter

It’s possible that you’ll need to use several hoses at the same time. The issue comes when there aren’t enough spigots or taps for the water supply. A hose splitter comes in handy in these situations. Water hose splitters are a form of fittings and adapters for water hoses. They are constructed in such a way that they can be attached to a faucet or spigot. It has many apertures for connecting multiple hose lines at once. Some hose splitters have a control switch that allows you to choose which hose receives the water supply.

Required tools and parts

The following hardware specifications apply to a 3/8″ water source which is a common threading size for most homes today. Take some measurements before you begin if you believe your plumbing is unusually old. 1/2 inch is still used in certain older plumbing.

Keep in mind that you’re measuring the internal diameter of a pipe tube through which water will flow. If you need assistance determining pipe diameters, watch this video. Most of these parts should be available at your neighborhood hardware shop. The list includes hyperlinks to Amazon images and pricing.

Before you go out and buy all of these supplies, have a look at the space underneath your sink and take some measurements. Depending on your requirements, you may need to tweak the formula slightly. For example, I specified a 20″ FIP hose, but you might need to buy a 10″ hose if you don’t have enough clearance under your sink. 

Things you’ll need:

A Good 3/4″ Expandable Garden Hose

Compression versus pipe thread

The most important thing to remember going into this is that we’re switching from compression threading from the water supply to pipe threading that your garden hose will connect to. Compression threading cannot be attached to pipe threading. It will leak if you do so, regardless of how much teflon tape you use.

This is why all of the adapters and fittings indicated above are required. Not only are we changing the size (3/8″ to 3/4″), but we’re also changing the shape. We’re transitioning from compression to pipe threading.

Procedure

Basically, we’re going to make a second cold water line with a “T” shaped fitting. We’ll then connect it to a valve so you may switch off the second water supply without disrupting the flow of water to your sink faucet.

  1. Put a pail under the water source of your sink

You’ll probably want to use your garden hose to run cold water through it. You’ll discover two water sources beneath your sink. Cold water is normally dispensed from the right-hand water source. Place your pail beneath it to catch any leaking water that has already entered the line.

  1. Turn the water source valve off

This is an excellent time to double-check that you’re using the cold water supply. Attempt to run cold water from your faucet. While the hot water is still running, no water should come out.

  1. Take the existing water line out of the water source using a wrench

The water line is often a metal threaded hose that connects a valved water supply to the faucet’s base. Unplug the hose from the water source, but keep the connection to the faucet.

  1. Tighten the three-way compression adapter to the water source

The compression adapter should be securely fastened to the sink wall’s water supply. For most newer houses, 3/8″ threading is the usual size. Tape the male thread with two or three layers of teflon tape. Hand tighten, then use a wrench to tighten another half turn.

  1. Attach the hose line of the cold water to the top of the compression adapter

Connect the hose to the compression adapter with the threads towards your sink. Cover male thread with two or three layers of teflon tape. Tighten with your hands, then with a wrench a half turn further.

  1. Attach the 20” FIP hose to the compression adapter

On the compression adapter, there should only be one threading left open. Tape the male thread with two or three layers of teflon tape. Hand tighten, then use a wrench to tighten another half turn.

  1. Attach the ½” steel nipple to open the FIP hose’s female threading

Tape the male thread with two or three layers of teflon tape. Hand tighten, then use a wrench to tighten another half turn.

  1. Attach ½” ball valve to the steel nipple

Apply two or three layers of teflon tape to the steel nipple’s male thread. Hand tighten, then use a wrench to tighten another half turn.

  1. Attach ½” to ¾” male hose adapter

Apply two or three layers of teflon tape to the hose adapter’s male 1/2″ thread. Hand tighten the ball valve, then use the wrench to tighten it another half turn.

  1. Turn the ball valve off then turn the water supply back on

Check for leaks, and if you find any, add a little extra teflon tape and/or tighten the seal.

  1. Attach the pipe wall mount to ball valve and mount

To avoid any weight hanging on your fittings, it’s critical to mount your valve somewhere.

None of your fittings should be slack or dangling. The threading will weaken with time, resulting in leaks. To put it another way, you want to make a “S” shape in your FIP hose by moving it up or down above or below your water source. Most sinks include a solid wood panel that holds screws near the sink cabinet’s floor or towards the roof beside the faucet’s base. Choose the ideal location for your shut-off valve. Make sure you have enough room to turn the valve on and off, as well as to connect your garden hose. Screws of the proper size should be used to secure the piece.

  1. Attach the expandable garden hose to the male ¾” threading

To thread, use Ally teflon tape and tighten by hand. There are two reasons why I recommend an extendable hose. 1) No need for a hose reel! It will easily fit in a tiny bucket beneath your sink. 2) They drain more quickly than typical garden hoses, making them less untidy in an inside situation.

Garden hose types

Lightweight or light duty hoses

These hoses are normally built of vinyl (occasionally with a reinforcing mesh or numerous plies or layers) and are more prone to kinking. They also feature plastic fittings and come in smaller diameters, but their prices are lower. A lightweight hose will likely meet your needs if you’re gardening on a budget, won’t be using it often, don’t need a lengthy hose of over 50 feet, have low water pressure, or don’t use a sprinkler or hose nozzle.

Light duty hoses are available online, but your best chance is to go to your local home improvement store or garden center. Some of the heavier-duty hoses are also available, but many of them are suitable for light-duty applications.

Expandable hoses

These scrunchie-like hoses that grow up to three times their length when filled with water have probably been advertised on TV. They’re usually fairly light (about 1 pound) and available in a variety of vibrant colors. Most are 12 inches in diameter and provide adequate water flow, comparable to that of a non-expandable garden hose of that diameter, but not as much as a standard hose.

Although expandable hoses do expand as claimed, they tend to stop contracting properly with time, leaving you with a hose that is difficult to coil or store. Be mindful that as the water pressure in the hose diminishes, the nozzle may shrink (sometimes substantially) when you open it after the hose has been expanded.

Because of the thin and highly flexible inner tube, expandable hoses are prone to rupturing if you have high water pressure or leave the entire hose in the sun. However, because of their modest weight, many individuals prefer expandable hoses. They should be kept out of direct sunlight, treated carefully as they typically feature crack-prone plastic couplings and used for hand watering rather than being connected to a sprinkler or soaker hose. Also, be prepared to change your hose on a regular basis.

Hoses for safe drinking water

Make sure your garden hose doesn’t leach dangerous chemicals if you or your dogs will be drinking from it, or if you’ll be using it to fill a pool that will be used by children. Most garden hoses are constructed with materials such as plasticizers, which give the hose flexibility, but also contain toxins such as BPA, lead, and phthalates, which end up in the water. These compounds are not harmful to your plants, but they are harmful to humans.

Look for hoses that are labeled “drinking water safe” or at the very least “lead-free”; they’re frequently sold for recreational usage, such as in boats and RVs. The inner cores of these hoses are non-toxic, FDA-approved, and do not leach dangerous substances. Before watering your vegetables or other edibles, let the water run through the hose until it’s cold.

Soaker hoses

Garden irrigation is usually done with soaker hoses. These hoses feature porous walls and are frequently composed of recycled rubber and polymers. When the water is switched on, it seeps out of the hose through thousands of small holes, allowing water to soak into or onto the soil. Soaker hoses can be placed immediately on the ground (ideally beneath a layer of mulch), buried slightly beneath the surface, or buried 6 inches or more for large beds of vegetables.

Soaker hoses are available in a number of diameters and lengths, ranging from 1/4-inch to 3/4 inch.  Because the larger hoses are less flexible, they might be harder to manage. To keep them in place, use garden stakes and let them “soften up” in the sun before laying them in the garden. Soaker hoses are ideal for level areas and shorter lengths (although a 14 soaker hose can last up to 100 feet). If you’re using a large diameter soaker hose, you’ll need a lot of water pressure to make sure water seeps out all the way.

Coiled hoses

When not in use, a coiled hose is formed into a tight spiral that can be pulled out and used. They’re usually shorter (15-foot and 25-foot lengths are the most popular, though some businesses offer longer ones) and have a diameter of 1/2 inch or less. These hoses do not stretch out to their full length due to the coils. Consider that a 25-foot hose may only stretch 15 to 20 feet, so keep that in mind when shopping.

Coiled hoses cannot be stored on a hose reel and would tangle fast if placed in a large pot or storage bin. For coiled hose storage, there are wall-mounted and stand-up hangers, however I’ve found that the coils get trapped on the hanger.

Coiled hoses are ideal for hand watering and use in tiny spaces, such as a patio or balcony, where the hose may be tucked away.

Flat hoses

Similar to a fireman’s hose, flat garden hoses are spherical while full with water but flatten out when empty. They’re usually light, quick to roll up since they’re self-draining, and take up less storage space than a standard hose, but they can be difficult to store with no hose reel. Some flat hoses come with a hose reel, but if they don’t, be sure they’ll fit your current reel. Flat garden hoses are often constructed of vinyl, are more easily punctured and kinked, and have a lower burst pressure rating because they’re very flexible.  When hauled around corners, they also don’t operate very well. Furthermore, before turning on the water, you must unroll the entire hose.

When storage space is limited and the hose will be utilized in a straight line across a smooth surface with few snags, flat garden hoses are the ideal choice. In general, these aren’t the finest choices for frequent usage in the garden, and we don’t recommend any of them for that use.

Keeping the garden hose for longer

Storage

Many gardeners make the mistake of not properly storing their garden hose. During the summer and winter, the storing method is different. Because the hose is used more frequently in the summer, it should be kept near the yard. However, the hose must be kept out of direct sunlight and must first be drained and dried. During the winter, however, the hose must be sucked dry so that no part of it freezes. High and low temperatures can damage most hose materials. If you wish to use it for a long time, keep it at room temperature. Coiling must be done in a less invasive manner at all times of the year. It must be done accurately and without causing any damage to the line. Alternatively, you can use an Expandable Water Hose. 

Proper handling

The hose quality is critical if you want a hose free of kinks and tears. However, how you handle and use your hose is really important. When watering your plants, don’t drag the hose about aimlessly. Carry it around with a hose coiler or simply carry it yourself. Keep the hose away from your pet as well. The pets may play with the hose in an inappropriate manner. Also, be sure to clean the hose connectors on a regular basis. As a result, the likelihood of kinks will be minimized.

Choose the correct length

Always purchase a hose in the length that you need. Never buy a hose that is shorter or longer than required. If you purchase a short hose, you will have to tug it, which will weaken the hose material. On the other hand, if you buy a longer hose, the excess hose pipe will tangle and cause kinks. And that’s something you definitely don’t want!

Turn the water off every after use

Everyone seems to have a habit of leaving the spigot running even after we’ve finished watering. However, it is quite hazardous to the hose. The water pressure cannot be maintained just by the nozzle. Water pressure has the potential to cause bursts. As a response, make sure your spigot is constantly turned off. It’s critical to understand how to connect a water hose to water hose fittings and adapters if you want to get the most out of your garden hose. As a result, be careful to follow the instructions correctly.

And that’s it!

We hope you learned a thing or two about hoses and how to connect a garden hose under your sink. If you’re planning to buy your next set of hoses, this article should help you one way or another. Happy shopping!