How to Install an Under Sink Water Filter

Tap water is not as safe as most people think. Even though city water is filtered regularly, the additives and chemicals used to filter water can cause several health concerns, especially to people who are dealing with respiratory problems. Therefore, if you want to improve the taste, smell of water and get rid of impurities, consider installing an under the sink filter. If you take a look at some water filter system reviews online, you will see that under sink filters are the most convenient ones. They are relatively affordable and they are designed to deal with a wide range of contaminants. Moreover, as you are about to see, they are not that hard to install.

Remove the tubing

When installing an under the sink water filter, make sure that the water is turned off. You can turn it off at the water shutoff valve that is located just underneath the sink. Furthermore, you’ll need to disconnect the water line by removing the tubing from the valve. In order to do so, use a basin wrench to loosen the nut and then proceed at removing the tubing on the faucet stem.

Mark your location

It’s important to take things easily and don’t rush things if you want to install the water filter without making too much of a mess. Position the filter as close to the cold water line and mark the spot where the water filter is going to be installed. Make sure to leave just enough space between the filter so that you will have easier access later on.

Drill a hole in the sink

If there is no pre-existing hole in your sink, start by drilling a 1 1/4” hole in the sink. If you find it difficult, note that there are different techniques for different types of sinks. To drill holes into a granite or ceramic sink use the knock out method or a diamond tipped hole saw. You can use a carbide tipped blade for drilling holes into a stainless steel sink. To keep it from overheating, run the drill at 1/2 speed.

Split the water line

After you’ve created the 1 1/4” in the sink, push the water line and the end of the filter’s faucet inside and keep it secured with a nut. You’ll then have to plug the water line into the water line, after which you turn off the cold water. To remove the line attached to the water supply line use a wrench to make your job easier. The last step is to allow water run to the filter by screwing the splitter to the fitting.

Install the water filter

Attach the water line to the splitter and plug the other end of the water line into the filter. Use a couple of screws to secure both the holder and the water filter to the wall of the cabinet. Before using the filter, turn the water on to ensure that there are no leaks. Before drinking, it’s recommended to turn the filtered water faucet on and let water run for 5 to 10 minutes.

Written by Janet Swift