Toilet-Where's the Water Coming From?

[practigal]

Posted a few days ago under "Toilet-Food Color Test". Emptied the toilet tank and bowl but when I woke up the next morning, both were full. The only way I can prevent this from happening again is to turn the water off in the house. By the way, there's a toilet in half-bath almost directly under this toilet.

Plumber is coming out for the clogging problem.

 

[Nige F]

Posted a few days ago under "Toilet-Food Color Test". Emptied the toilet tank and bowl but when I woke up the next morning, both were full. The only way I can prevent this from happening again is to turn the water off in the house. By the way, there's a toilet in half-bath almost directly under this toilet.

Plumber is coming out for the clogging problem.

What`s a food colour test Us Brits don`t have such things.tho` I`ve heard the Germans examine their stools before flushing I Haven`t a clue what you`re on about and I`ve been plumbing since 1970 in the UK .

 

[practigal]

To find out if you have a toilet leak, place food coloring in the toilet tank and if the coloring is winds up in the toilet bowl after awhile, you know you have a leak.

 

[meldrew's_mate]

From what I have seen of "Septic Tank" tanks I assume the cistern (top tank) refills automatically, so you're testing to see if the flap valve (flush valve) is constantly passing water into the pan.

It could be you're a Septic Tank in the UK, testing on a UK WC with internal overflow, in this case the possible mains pressure to the cistern is overfilling the cistern so that the pan constantly fills.

In each case sort out the cistern filling device, then sort out the flush valve, or the problem will go away with the internal overflow type.

 

[keyplayer]

Bahcos original post?