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-   -   City water/sewage & very heavy rain (https://www.diychatroom.com/f7/city-water-sewage-very-heavy-rain-78689/)

Yoyizit 08-13-2010 12:45 PM

City water/sewage & very heavy rain
 
So we got a bad smell in a toilet. This has never happened before.

Can anyone step me through the reasoning connecting a heavy rain with this smell, if there is a connection?

Should I be looking for damage, tearing up drywall, testing for blockages?

DUDE! 08-13-2010 04:20 PM

if the smell is coming from the toilet, I would look for mineral buildup. I wouldn't figure the heavy rain would effect your toilet, the city sewer plant maybe, depending on how your city sewer lines are hooked up. Now if your toilet over-flowed and no body told you, you might have lingering odors present.

Bigd3129 08-13-2010 06:32 PM

It might be your wax ring, it might be damaged and not hold a air tight seal and as a result sewer gas ( methane) is coming up and into your house, what does it smell like, is it only coming from your toilet, thats the first thing that comes to my mind, good luck:thumbup:. PS. are you sure its related to heavy rainfall or could it be just a coincidence.

also check your water tank, make sure its at the proper water mark (1 inch below the overflow tube.) your trap may not have enough water to competley have a correct seal.

daveb1 08-13-2010 06:35 PM

Where in your home is the offending toilet located,basement?Do you have weeping tile or downspouts connected to the city sewer?

Yoyizit 08-13-2010 08:50 PM

Quote:

Originally Posted by daveb1 (Post 485381)
Where in your home is the offending toilet located,basement?Do you have weeping tile or downspouts connected to the city sewer?

Upstairs, and no.

Hashing this over with you guys makes me think: drain lines slope downward so if sewer gas is lighter than air it would go back to the house.
If there is 4" of water in a trap it takes only 0.1 PSI to overcome this.
With heavy rain and storm conditions I suppose there could be pressure differences in the sewer gases that occasionally overcome the water in traps.

"if the air pressure within the drain becomes suddenly higher than ambient, this positive transient could cause waste water to be pushed into the fixture, breaking the trap seal, with dire hygiene and health consequences if too forceful. "

AllanJ 08-14-2010 11:08 AM

Does the smell go away after the storm ends?

Is the water level in the toilet bowl unusually low compared with other toilets?

Do you see the water in the toilet bowl vibrate when the wind blows?

You could have had a long term leak under the toilet bowl.

Yoyizit 08-14-2010 11:24 AM

Does the smell go away after the storm ends?
...It came and went during the storm.

Is the water level in the toilet bowl unusually low compared with other toilets?
...No.

Do you see the water in the toilet bowl vibrate when the wind blows?
...This we will have to watch for.

You could have had a long term leak under the toilet bowl.
...No stains visible but I guess the waste water could follow the pipes down.

I need to go on the roof anyway to repair gutter damage so I'm going to check the vent pipe for that bathroom.

federer 12-02-2010 01:44 AM

hey man-did you find out what was causing it?


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