My basement toilet is blasting water out at the base.

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Sewer blaster

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Jan 30, 2020
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Location
Illinois
Hello all.

I’ve got a plumbing problem that I’ve not been able to solve. This seemed a good place to post it, in hopes of a fix.

Before thanksgiving 2019, we began experiencing a clean water flood around the basement toilet, with intermittent accompaniment of sewage backup at the basement shower.

The first plumber spent 2 hours in the basement doing something. I was at work. I was billed for a replacement wax ring and main sewer drain clearing. From this point on, we began experiencing sewage smell in the house, and all previous problems still exist.

The second plumber spent 3 hours running a snake in the main drain, and it did seem like he fixed it. But three days later, the clean water was on the floor, and the shower had sewage residue in it again. The sewage smell is still present as well.

I’ve finally witnessed the actual flooding event. When it occurs, clean water blasts out at the base of the toilet, as if it’s pressurized. It doesn’t happen everyday. It doesn’t happen in concert with any other major water event in the house, except maybe washing towels. Not clothes mind you...only towels.

Only sometimes does the clean water blast also come with sewage backup in the shower drain. But we never get sewage backup unless the toilet has blasted its water first. I hope I’m being clear. This clean water blast does not affect the water level in the bowl either.

Additionally, two days ago, someone in the house used the toilet for solids, which caused the basement toilet to gurgle, but there was no flood, or backup.

The shower on the main level doesn’t drain correctly anymore either, (also since before thanksgiving) but the basement shower drains fine. And one toilet on the main level has begun double flushing. I also suspect the the flapper on the basement toilet may be leaking, but haven’t proved it.

The house has two vents, and two clean outs. The main stack is 4” diameter copper and the other is 1” cast iron. The smaller line may be attached to the clothes washing machine, and kitchen drain lines. The larger vent is tied to two toilets, 2 showers, and two sinks.

Finally the second plumber said he hit a blockage at 109 feet from the cleanout. He said it would happen again, but didn’t expect it to happen soon.

There have been days when nobody was home all day, and we come home to a flood. We’ve also had days when we did multiple loads of laundry and had no flooding.

Any thoughts? While I believe the cost of a plumber is justified, I can’t afford to spend more money for them to come and do the same thing a third time, for a three day fix.
 
You obviously have a blockage in the sewer somewhere.

It sounds like it is inside the house, but it could be anywhere all the way out to the street.

Sounds like you should not have paid some of these guys before you checked their work.

You probably need a better plumber, specializing in drain cleaning, who has a camera that can check the sewer lines.
And make sure he takes and gives you clear recordings of all the camera inspections, and you know which pipes are which in all videos.

Otherwise, the drain guys are just rodding blind, not knowing what the real problem is.
 
Around my area near Chicago, many drain specialists give a guarantee after rodding or hydro jetting, some as long as a year.
 
Septic tank or municipal sewers?

If the events took place with absolutely no use of water in the house, it's obviously backing up from outside your house.

If on municipal sewer system, call the city and tell them that.

If on Septic system, call a company to check the system.
 
It is a link to a funny Three Stooges video.
With little skits where they make fun of being called “gentlemen”.

Maybe your device does not allow playing Youtube links?
 
The most recent plumber showed me my line where it enters the city sewer out in the street under a manhole. I thought that was pretty neat. Only thing that puzzled me was that we’d shut off all the water inside and there was still plenty coming out. He said it was nothing to worry about.

I’d read the advice that double flushing could be caused by the flapper. So I replaced that in one main level toilet. It worked, but now the other main level toilet is double flushing.

I also went to replace the flapper in the basement toilet, and found a crack in the flush valve. I replaced the entire flush valve, and had the shut off valve fail after discovering I’d done something wrong and water was leaking everywhere. I shut the house water off, ran to the farm store just before they closed, and bought the wrong size shut off valve for a replacement. Didn’t do that on purpose of course, but of the twenty shut off valves they carried, they were ALL 3/8”. I falsely assumed that must be the only size it could be! So until tomorrow I guess. I had cast iron fittings to cap it off for the meantime. What fun this plumbing thing is! No wonder it’s $100 an hour!
 
Water should not be pouring out of your sewer into the city main, after your house is all shut off.

It sounds like a partial blockage is slowly draining.

That also explains why you get more backup trouble after washing towels, because more lint is discharged down the drain than with other laundry.

Or maybe your water service line is partially ruptured, before it reaches the house, they often run in the same trench together.
 
We’ve only lived here since August. The water bills are higher than they ever were at our previous residence, but I had no baseline here, so hadn’t questioned it. Thanks to everyone for your advice so far. I’ll get someone in with a camera as soon as I can.
 
The water service line might be leaking into the sewer, and the water leak might be on your side or the city side of the water meter.

So even if you show no water being used, it still could be a water line leak.
 
New development: water slowly leaked from the base of the toilet during my sons shower. Maybe 1 minute after he shut off the water, the basement toilet bowl water level dropped. I suppose that would indicate a venting problem. I opened up the ceiling and couldn’t find anything that looked like a vent coming out of the top of the walls for sink, shower, or toilet. I don’t know that this has anything to do with the backup problem. Just something else that probably needs addressed.
 
Sounds like you've got a fixer upper there. Plumbing problems can be a nightmare. Please keep us posted and I hope things will work out for you.
 
Usually when a toilet bowl is sucked down I have found it to be a partially clogged drain line, creating suction as it drains.

Get the camera inspection done asap.
Your floor will start to rot under that toilet.
 

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