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Why Can’t I Pour Grease Down My Drain?

July 24th, 2018

If you’re a fan of frying up bacon on a Sunday morning, you’ve no doubt heard that you should never pour cooking grease into your sink or drain. But why can’t you just use the convenience of your garbage disposal to dump the oil after you’re finished cooking? A little bit of oil can’t be that big of a deal…right?

Surprisingly, homeowners pouring grease in their drain causes many more problems than the occasional call to a plumber in Phila. According to a study published in the Journal of Oleo Science, fat and oil buildups in drain pipelines account for an estimated 47% of the 36,000 sewer overflows that happen every year in the United States.

The problem with pouring your grease down the sink comes when it interacts with water. We’ve all heard the phrase “oil and water don’t mix;” when it comes to cooking grease, this is literally true, as the grease breaks down into fatty acid components and glycerol when they interact with water in your drain or the sewer. After being broken down, these two components are prime to bind again, and often do so to calcium particles in your sink or the sewer. The result is a congealed, messy blob of fat and oil called a “fatberg” that sticks to the interior of your pipes and causes clogs. While fatbergs are chemically classified as a soap, you won’t want to grab one for your shower—these blobs of fat and grease can become enormous in size. One of the largest fatbergs in the world was excavated from a British sewer and weighed over 130 tons—it was so massive that it even got its own exhibit space in the Museum of London!

Instead of pouring grease down the drain, allow it to cool and scrape the grease from the pan into the garbage. Made a mistake and already dumped that excess cooking oil? Make a call to your local Philly plumber – Guaranteed Plumbing & Heating, Inc. – before you have to deal with a fatberg in your own drain!

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    Loretta, Philadelphia
  • Small world, didn’t realize we knew so many of the same people! Thanks a lot for getting our drain clog fixed as my wife was really stuck and we needed it fixed right away. I have seen your trucks around for years and didn’t realize that you did drain cleaning too.

    Angelo M., Philadelphia
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    Joan Q., Philadelphia
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    Barbara, Elkins Park
  • So I never thought I would be writing one of these to a plumbing company! Thank man for helping me out, you knew that I was in a bind with my crew and didn’t realize when we started the job that plumbing would be on the menu unexpectedly. I appreciate you getting the job done […]

    Rob N.
  • Guaranteed Plumbing, thank you for your quick response to my emergency service that was needed at my home in the northeast section of Philadelphia. I called quite a few companies and you were the only company that were able to come out right away and actually gave me a good price. You have some great […]

    Nancy B., Philadelphia
  • Rick, I want to thank you and your team for your professional work. I had to write to let you know that since you guys did such a great job on our drain cleaning, and I know it wasn’t an easy one..but you did a great job. I am glad that I found your company […]

    Jack H., Philadelphia
  • I am a volunteer with Aid for Friends, and my senior friend is a 90 year old amputee, whose heater broke. She was upset when she called PGW and they advised they could not do anything for her. I supplied her Guaranteed’s number. She was a little hesitant, but called. Your employee Brian was dispatched. […]

    Colleen McGarry
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