Simple DIY: How to Backwash Swimming Pools In 3 Steps

Maintaining swimming pools is an obligation for every pool owner to keep the pool comfortable to use from daily skimming to 5-yearly draining. Some maintenance processes can be done all by yourself without any need to call a pro, and one of them is backwashing.

The term ‘backwash a pool’ basically means cleaning the filter from the contaminants that may build up from time to time and cause a clog. Shortly, backwashing means that you flow the water backward through the pool filter and out the draining port. This effort will eventually remove the trapped debris inside the filter.

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Below we have quick guides on how to backwash a swimming pool by yourself so you can save more budget for something else, so just keep reading!

How to Backwash Swimming Pools

There are two types of pool filters which are sand filters and D.E (diatomaceous earth filters). On this page, we’re going to share a simple way to backwash a sand filter.

Check the Pressure Gauge

Usually, you need to backwash a sand filter once a month, but you can check the pressure gauge first.

  • When the pressure gauge shows a rise of 8 to 10 psi (pounds per square inch), it means you have to backwash the filter. This measurement indicates that your filter is clogged.

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Start to Backwash

How to Backwash Swimming Pools 1

In this step, we’re going to use the multiport valve which is a very easy process to finish in no time.

  • Prepare a pool backwash hose and attach the hose to the waste port.
  • Turn off the filtration system and place the valve in backwash mode.
  • Turn on the filtration system and let the water get backwashed for some minutes.
  • Then turn off the filtration system again and position the valve to the rinse mode.
  • Turn on the filtration system.
  • Run the rinse mode for about a half minute.
  • Turn the filter off.
  • Position the valve to the filter mode.

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Drain the Water

This last step needs to be considered even before you start backwashing. You have to know where the dirty water from the backwash process is going to go.

  • Due to the chemical that can contaminate the environment, you can’t just directly flow the pool water into the street or your backyard.
  • Please make sure to check the local water authority in your area on how to dispose of the pool water.
  • Some common options include storm drains, plumbing cleanouts, and dry wells.

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The backwashing step is like a simple method to clean up your filter that you can do at least once a month or when the gauge shows a high level of psi. However, you still need to deeply clean your filter at least twice a year to thoroughly remove the debris and check the condition of the equipment.

Now let’s add the backwash process to your swimming pool maintenance list!

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