What is Backwashing a Pool?

What is backwashing

When most people think of pool cleaning, the first thing that comes to mind is skimming the surface of the water with a net. This is an integral part of pool maintenance, but it’s not the only one.

Another critical task is backwashing your pool filter. Backwashing helps remove debris from the filter and keeps your pool clean and clear. In this blog post, we will explain what backwashing is, why it is essential, and simple steps on how to backwash your pool filter.

What Is Backwashing?

Backwashing is the process of reversing the flow of water through your pool filter to remove debris that has collected inside.

Over time, your pool filter will collect dirt, sand, and other particles. If these particles are not removed, they can clog up the filter and reduce efficiency.

Backwashing helps to remove these particles and keep your filter working properly. It’s an important part of pool maintenance and should be done regularly.

When Should I Backwash My Pool?

When Should I Backwash My Pool?

Generally, you should backwash your pool filter once a week. However, this may vary depending on the type of filter you have and the amount of use your pool gets.

You can also backwash your pool during your scheduled pool cleaning. This is an excellent time to check the condition of your filter and clean it if necessary. An industry standard is also backwashing your pool when the pressure gauge is at least eight psi above the usual reading.

You also need to backwash when a storm has hit as there will be a lot of dirt and debris in the pool. This prevents your filter from getting clogged and keeps the pool clean.

If you have nearby trees, you may need to backwash more often to remove debris or foliage that has blown into your pool.

Cloudy or green water is also a sign that you may need to backwash your pool. This usually happens when the filter becomes clogged and needs to be cleaned.

Is Backwashing a Pool Necessary?

Is Backwashing a Pool Necessary?

Backwashing your pool may seem like a waste of time and energy. Still, it is an essential part of maintaining healthy, clear water.

A well-maintained pool will last longer and be more enjoyable to use. Neglecting to backwash can lead to costly repairs down the road.

Additionally, who wants to swim in dirty water?

Backwashing your pool helps to keep the water clean and clear and allows for proper filtration and circulation so that everyone can enjoy your backyard oasis. So, don’t shy away from backwashing. Embrace it as essential for keeping your pool in top shape!

How Long Do You Backwash a Pool For?

How Long Do You Backwash a Pool For?

The length of time you backwash will depend on several factors, such as the size and type of your pool and the kind of filter you use.

On average, the entire process usually takes about ten minutes.

Simply attach a hose to your filtration system and turn on the pump motor to begin backwashing.

Backwash the sand filter for 2–3 minutes or until the water runs clean after filling it with water. When finished, shut off the pump motor and push down on the T-handle to lock it into position again.

Make sure to read the manufacturer’s instructions for your specific pool filter to ensure you are backwashing correctly. Different pool filters require other backwashing procedures. But, in most cases, the process is relatively simple and only takes a few minutes.

Taking these steps will help keep your pool functioning and ensure that you enjoy clean and clear water all season long.


Backwashing your pool is an essential part of keeping it clean and clear. This process involves flushing out accumulated debris from your pool’s filter to prevent clogging. Backwashing also helps to keep your pool circulating correctly, ensuring that the water stays fresh and clean for swimming.

At first glance, backwashing may seem like a time-consuming task that takes up precious pool time. However, this is a quick and easy way to maintain healthy water in your pool.

By following a few simple steps, including turning off the pump and opening the filter, running water through the system, and then closing it back up, anyone can quickly and effectively backwash their pool. So, if you want to ensure that your pool is always ready for a refreshing dip, don’t hesitate to give backwashing a try!

About the Author

stefan schulzStefan Schulz is the founder and owner of PV Pool Cleaner. He spent his college years working at Niagara Pools and Spas, one of the largest Swimming Pool and Hot Tub Dealers in the Eastern United States.

Today, he utilizes his background, experience as a pool owner, and the resources of his digital marketing agency, Orpical Group, to generate informative and engaging content for pool owners everywhere.