What is an overflow in plumbing?
An overflow occurs when there’s a blockage in the plumbing system.
When the toilet is flushed, there’s nowhere for the water to go due to the blockage, so the toilet bowl overflows.
The water that’s causing damage never enters the sewer system.
An overflow can also occur when there’s blockage within the lateral pipe..
Do all toilets have an overflow pipe?
A modern toilet will have an internal overflow Flush Valve fitted, which is great as it removes the unsightly overflow pipe and saves drilling a hole in your house for it. But it does mean you need to look out for the signs that your cistern is overfilling.
What is the function of the overflow pipe?
The purpose of the overflow pipe is to prevent flooding. Overflow pipes are installed on cold water storage tanks in lofts and this includes feed and expansion tanks. When a tank overflows, it can often be down to the ball-valve that needs replacing.
What is the pipe dripping water outside house?
If the water is coming from a small PVC pipe that is usually in the eave of the home you have a problem, more than likely your main drain line for your air conditioning system is clogged and needs to be addressed.