Water level in toilet bowl

snaps

Dont laugh guys, just wondering what causes the toilet level in the bowl to vary. Sometimes its high and sometimes its low, this affects all toilets in the house. Would it be the wind or air pressure?

Joey the lips

From my understanding , The wind blowing down the soil pipe is a common problem, in unoccupied toilets its simple evoperation pressure can effect it but its not outside pressure its siophoning where a build up in the sewage system pulls on the water in the toilet. Granted this build up might be to rain.

Solair

It could also be caused by lack of a proper vent pipe.
You should get a plumber to take a look at it.

mike65

A house I used to live in (forget which one) used to show this effect every now and again.

Hal1

The gravitational pull of the moon perhaps :eek:.

meercat

If it's a septic tank then perhaps it's full or faulty percolation area

snaps

I notice that when its windy the water really moves, so the soil pipe could be a good explanation as its on the side of house that makes the wind whistle when in a south west direction.

km79

snaps wrote: »

I notice that when its windy the water really moves, so the soil pipe could be a good explanation as its on the side of house that makes the wind whistle when in a south west direction.

It's the wind. Happens here too when wind is on that side of house

delw

jayus lads is the weather that boring atm that we are reduced to talking about windy toilets

Danno

Depends on whether you pass wind while sitting on the throne or not!!! ;-P

Deep Easterly

Have noticed the water in the jacks bobbing up and down during stormy weather as well.

Bloodwing

The wind passing over the top of the soil pipe causes a change in the pressure inside the pipe which causes a change in water levels. The wind doesn't need to be blowing down the pipe. It's called the Bernoulli effect.

John mac

this can also lead to he trap loosing water and thus not being a trap any more. "Wavering out" is the term .