
· The extremely hot water can melt the wax seal around the toilet bowl, leading to leaks and water damage. · It can also cause the rubber gasket to deteriorate prematurely. · Additionally, if there is a clog in the system, pouring hot water down the drain will only worsen.
Is it OK to put boiling water down the toilet?
Is it OK to put boiling water down a toilet? - The answer depends on the type of pipes that are connected to your toilet. If your pipes are PVC or some form of plastic then the answer is NO - it's not safe to pour boiling water down the toilet.
What happens if you put hot water in a toilet tank?
This completely fills any gap between the pipe and toilet. If you pour hot water into a toilet it may melt the seal. Then, every time the toilet is flushed some dirty water will escape and wet the wood flooring. You might not notice this at first but over time it will cause the floor to rot.
Does hot water unclog a toilet?
Hot water (not boiling water) when combined with some detergent does sometimes help to unclog a toilet. This is a Life Hack that many homeowners use. It's not always successful since it depends on the severity of the clog and where along the drain pipe the clog sits - but it's certainly worth a try. Will A Toilet Eventually Unclog Itself?
Can I pour boiling water down my plumbing drain?
The Massachusetts plumbing code (248 CMR 10.00) limits the temperature of water entering waste plumbing to 150F. The water from a standard hot water supply in a home or office won’t pose such risk. You could pour boiling hot water down any normal modern plumbing drain and you’ll be fine if its’ normal down there.

What happens if you pour hot water into a toilet?
If you pour hot water into a toilet it may melt the seal. Then, every time the toilet is flushed some dirty water will escape and wet the wood flooring. You might not notice this at first but over time it will cause the floor to rot. The repair will require removing the toilet and tearing up the damaged subfloor.
What happens if water is too hot?
Water that is too hot can damage waste pipes that are already compromised from age and corrosion. Of greater concern, excessively hot water can put plumbers and other persons at risk of burns. The Massachusetts plumbing code (248 CMR 10.00) limits the temperature of water entering waste plumbing to 150F.
Why does my toilet drain slowly?
Toilets typically drain slowly when there is something caught in the toilet trap, or the drain serving the toilet is clogged or partially blocked. If water flows from the tank to the bowl as it should, the next thing to do is try to clear the toilet trap with a closet auger.
What is the connection between a toilet and a waste pipe?
The connection between the toilet and the waste pipe beneath it is sealed with a ring of bees’ wax. During installation, the toilet is placed on the wax ring and it settles until it touches the floor. This completely fills any gap between the pipe and toilet. If you pour hot water into a toilet it may melt the seal.
Can you use a plunger to damage a toilet?
If it was a grease clog perhaps but you don't generally see those in the 3" minimum soil pipe if a toilet. You would never be able to get enough pressure with a standard plunger to damage a toilet. Possibly with one of these if the pipes or toilet already had a flaw.
Is It Safe to Pour Boiling Water Down the Drain?
It is not safe to pour boiling water down the drain, mostly if it is made of PVC. It is always recommended that you avoid such acts. A majority of homes do have PVC pipes below their sinks and if the house is new, chances are it has them installed.
Is Pouring Hot Water Down the Drain Bad?
Pouring hot water down the drain can be bad if it reaches boiling temperature. In such a case you may encounter the following issues;
Can You Pour Boiling Water Down the Shower Drain?
You can pour boiling water down the shower drain only if the pipes are made of metal. The water temperature will help to dissolve the substances blocking the drain. For instance the gunk.
How Often Should You Pour Boiling Water Down the Drain?
You should not pour boiling water down the drain. Not unless the drains are metallic. If not, you need to avoid that habit. Even though some do believe you can do it only once every week to avoid build-ups on the inner sections of the pipes, this isn’t right.
Conclusion
As noted, boiling water destroys PVC pipes and you can even get injuries in the process. It can also cause clogging which then results in backups and I bet you wouldn’t want that to happen in your home. Therefore, if you normally pour extremely hot water into the drains, then it’s time you stop the habit.
Can You Pour Hot Water Down Sewer Vent?
While coming to clean or unclog the sewer vent, it becomes like a nightmare. So can you pour hot water down the sewer vent- Simply YES. You can.
Is it Safe to Pour Boiling Water Down the Drain?
Clogging drain is the most common issue and comes over every single month twice. You probably heard about- pouring hot to boil water can dissolve the clog without much effect. Right?
Wrap Up- Hot Water Down Sewer Vent and Drain
Hot water is safe and effective in both sewer vent and drainage systems but in some limitations and conditions.
