Why does one toilet lose water when another is flushed?

You’ve got a venting issue and there’s not enough air getting into the waste line that’s probably feeding both toilets. And so, as a result, when you flush one, you cause a draw on the other that pulls the water out.

Why would a toilet bowl suddenly go dry?





Low Water in Toilet Bowl
The toilet tank fill tube may be damaged or incorrectly positioned, preventing the water level from reaching its proper level. Position the fill tube so water is flowing into the overflow tube (the open pipe near the center of the tank). If this doesn’t fix the problem, replace the fill tube.

What causes the water level in the toilet bowl to drop?

In the case of your toilet water levels, when pressure shifts within the pipe system, the water in the toilet bowl is consequently affected. With a decrease in pressure within the pipes, there is a suction effect. The toilet water is pulled to this area of low pressure, and as a result, water levels drop.

Why does toilet water shoot?

The water tank attached to the toilet could be overfull, as a result of a faulty float. This causes the tank to become too full of water, so when you flush, a large amount of water hits the water in the bowl, and then sprays upwards.

Can one clogged toilet affect another?

If two toilets on the same floor of your house seem clogged, then you may have a drain line blockage. The drain line is the one line that the other drains will feed into. This problem would cause more than one plumbing fixture to back up. It’s also why you can’t fix it with a good un-clogging.

How do I stop my toilet water from evaporating?





If you’ll be gone several weeks or more, stretch a layer of plastic wrap over the toilet bowls to keep water from evaporating. If the toilets dry up, sewer odors may seep in and bugs may crawl up the pipes. It can also dry out the seal between the toilet and floor, which will make your toilets leak around the base.

How do I know if my toilet is leaking from the base?

Look at the base of the toilet, and you’ll see two tee bolts, which might be covered with caps. If the wax ring under these bolts doesn’t form a water-tight seal, the toilet will leak from the base when you flush it.

How do I know if my toilet is leaking?

Here is a simple Toilet Dye Test you can complete to see if your toilet is leaking.

  1. Drip 10 to 15 drops of food coloring into the toilet tank. …
  2. Wait 10 minutes.
  3. If colored water appears in the toilet bowl, you have a leak.
  4. Generally the leak is in or around the plunger ball or flapper valve at the bottom of the tank.

How do you fix a toilet p trap?



It is easy to fix a P-trap that ran dry due to a period of inactivity. Flush the unused toilet and pour water down the sink and bathtub drains to restore the P-trap’s water barrier. Run water down the infrequently-used bathroom drains regularly to prevent the P-trap from running dry in the future.

How do you tell if your sewer line is clogged?

4 Signs Your Sewer Line Is Clogged

  1. Water Backing up in Your Toilet or Sink. One of the first signs there’s a problem with the main sewage line is water backing up in the sink or toilet. …
  2. Slow Drains. Keep an eye on the drains when washing dishes, showering, or washing your hands. …
  3. Funky Smells. …
  4. Flooded Yard.

What are signs of sewage backup?



Early signs of sewer backup

  • Gurgling sounds coming from a drain.
  • Unusual odors coming from the sinks, showers, or drains.
  • One or more drains moving slower than usual.
  • Water backup into the shower or tub.

How do I know if my toilet pipe is blocked?

Signs that your toilet (or sewer line) is blocked include:

  1. The water does not flush properly, stays in the bowl for long periods or ends up overflowing over the top of the bowl.
  2. When the toilet is flushed, water starts to gurgle up in your shower or bathtub drain.

How do you unclog a main sewer line?

Your step-by-step guide: How to clear a main sewer line clog

  1. Loosen the cap on the drain pipe. …
  2. Allow any sewer buildup to come out of the drain. …
  3. Gently feed the auger cable into the main line drain. …
  4. Run the auger until the clog is broken up. …
  5. Hose out leftover debris. …
  6. Pull the auger cable back out of the main line drain.


Will Drano unclog sewer line?

Bust a Sewer Clog With Enzyme-Based Drain Cleaner
It’s hardly ever a good idea to put Drano or a similar product in the toilet because it contains sodium hydroxide, which generates heat and can damage the pipes.

How do you unblock a sewer pipe?

Try pouring hot water down the drain, then follow it with one cup of bicarbonate of soda and a cup of vinegar. Leave it for ten minutes, then chase it with more hot water. A combination of the hot water and the natural cleaner mixture can break blockages up.

Who is responsible for blocked sewage pipes?

Assuming a detached property in London has no shared drains, then the homeowner is responsible for the drains up to the property boundary, and Thames Water is responsible for all blockages or repairs off your property.