How to Clean Out PVC Pipes With Peroxide


Polyvinyl chloride pipes are all purpose piping that can be used for many diverse projects from indoor plumping to irrigation. However, no matter what purpose you are using the PVC pipe for, inevitably, they will get dirty or scummy on the inside. This can result in dirty water and possible mold on the interior of the pipes. You can clean these PVC pipes by using peroxide liquid, a type of oxygenated, weakly acidic compound.

Things You'll Need

  • 2 to 3 gallons clean water
  • 3 to 9 oz. peroxide
  • Towels or rags
  • Remove the pipe from where it is installed if applicable. Though it is possible to use peroxide to clean out the pipe while it is still installed, it is much easier to do so when the pipe is free.

  • Rinse out the pipe with clean water. Simply flush the system out as best as you can by draining two to three gallons of clean water down the pipe. This will prepare the pipe for cleaning with the peroxide, ensuring minimal resistance when you use the peroxide.

  • Clog one end of the pipe with towels or rags. This will help the peroxide stay in the pipe longer, thus allowing it to clean the pipe the most effectively.

  • Pour three to nine ounces of peroxide into the open end of the pipe. The peroxide will clean off the edges of the interior of the pipe, thus making it cleaner. Keep the peroxide in the pipe for about 10 minutes before removing the rag and letting the pipe drain. Repeat this step two to three times as needed.

  • Replace the pipe in its installation place.

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  • Photo Credit pvc image by Greg Pickens from
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