I had a counter and sink installed in my bathroom. The new sink is undermount and sits a little lower than the old one. I did the drain piping using abs plastic.
At first everything was fine I think. Now if I run the tap for more than 30 seconds it wont drain and fills up my sink. It can take several minutes to drain down.
I want to know if my piping sits to low and there isn't enough pressure to drain or if my condo has a possible blockage in the piping causing this.
My pipes are all clear, I mostly need to know if my plumbing acceptable to drain. Thanks