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Why Does My Toilet Keep Clogging? 

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Our new home has only one bathroom. After 1 week I was at the hardware store buying a plunger. I’ve had to use it once a week since. This is not good.  We personally know better than to flush anything other than TP, but that doesn’t mean the prior residents respected that rule. Still, I did some searching and analysis, and as stated below, older, low-flow toilets tend to have this problem. Ours is most certainly low flow. It looks like I’m just going to have to replace the whole darn thing. If you’re having similar issues, this is a sound diagnostic article. A constantly clogging toilet can only be attributed to one of these things below.

The following text is taken directly from Ragsdale Air, servicing the Atlanta, GA area. If you live in that vicinity and are having a plumbing issue, these are the guys I would call first, since their website was the first to come up when I searched, “Why does my toilet keep clogging?”

Sourced from: Why Does My Toilet Keep Clogging | Ragsdale Heating, Air & Plumbing

Does it seem like you’re plunging your toilet at least once a week (or more)? Not fun.

Here are a few of the most common causes of a toilet that just keeps clogging and how to fix them.

1. You’re flushing stuff you shouldn’t be

The only things you should flush down a toilet are human waste and toilet paper. Nothing else.

Even facial tissues can be a big problem. They’re not made to break down in water the same way that toilet paper is.

Common things people flush that cause clogs include:

  • Tampons
  • Facial tissues
  • Cotton swabs/Q-tips
  • Condoms
  • Dental floss
  • Diapers

How to fix it:  Put a garbage basket next to the toilet so the next time you’re tempted to flush something you shouldn’t, you can just throw it in the waste basket.

2. Flapper not opening completely

The flapper is the part of your toilet that lets water flow from the tank on the back down into the toilet bowl, creating the flush.

If the flapper doesn’t open all the way it won’t release enough water, which means you’ll get a weak flush. Clogs are common in toilets with a weak flush.

How to fix it: Adjust the chain that connects the flapper to the flush handle so that the flapper opens completely when you flush.

3. Blocked or clogged plumbing vents

All your toilet drains vent out your roof. This helps you get a good flush. If the vent becomes clogged or blocked (like from a bird nesting in it), your toilet will flush slowly.

And that reduced velocity means larger “loads” don’t quite get flushed completely, leading to a recurring clog problem and forcing you to become friends with your plunger.

How to fix: Clear the plumbing vent. Unfortunately, this has to be done from the roof. So this job is usually best left to a professional.

4. Something stuck in the trap

The trap is an S-shaped tube that separates your toilet from the drain line (and keeps nasty sewer gases from getting into your home).

If something (like a toothbrush) was flushed down the toilet, it could be stuck in this trap. Then, each time you flush, more debris gets wrapped around this object, eventually leading to a clog.

A plunger can solve the problem by sending all the debris down the sewer drain, but the toothbrush stays in the trap because its shape makes it difficult to get through the S-curve.

How to fix: Unfortunately, to get to objects like this out of the trap, you must take the toilet off the floor and get to it from the bottom. This is a pain, so make sure you’ve eliminated other possible causes. If you’re uncomfortable with this at all, we recommend hiring a professional since mistakes could lead to even more problems and higher costs.

Caution: Make sure you replace the wax ring on the bottom of your toilet if you remove the toilet from the floor. This is the seal that keeps waste water from leaking into your home.

5. An old, low-flow toilet

If you have a older low-flow toilet, it just may not have enough flushing power. When low-flow toilets first came out, they weren’t great and many homeowners reported problems.

Since then, manufacturers have much improved their design. But some homes still have the old models.

How to fix: Replace your toilet with a more modern version.

6. Sewer line problems

If this is a problem for many of your toilets/drains, you may have a sewer line problem. Tree roots can grow into the sewer line and create a backup. Or there can be a partial clog in a sewer line that is never quite removed when you plunge.

How to fix: You need a professional to clear out your sewer lines, most likely. A plumber can also do a video inspection to see if tree roots are the problem.

 

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