Sometimes my toilet doesn't flush all the way or the water comes up all the way to the top. Other times the water in the toilet goes really low in the bowl. When I drain my kitchen sink, I can hear the toilet bubbling. Tonight I found my sink water had come up in the bathtub.

Hi elizabeth and welcome, you may have a blockage in you mainline, if you do you will need to run a snake through it. Are you up to snaking it out? If you are post back with a little more info about the lay out of the house, single story? On a slab? Septic or city? And some of the great plumbers here will guide you. Good luck

I have one that most repair plumbers miss.. Look down at the bottom of the bowl. If there is a small hole, then that is a jet that starts the syphon action. If it's clogged the water will just swirl around and slowly go down leaving solids behind. Take your finger,(UGH! ) and run it around the inside of the opening. Over the years minerals build up and cut down on the syphon (flush) action. If it is rough or you feel build up, take a table knife and put a bend in it to get around the curve in the bowl and chip and scrap it clear. Next take a coathanger and clear out the holes around the rim. They start the swirling action. And last, check the water level in the tank. It should be 1/2" below the top of the over flow tube. And speaking of the overflow tube, Make sure the small 1/8" tube from the ballcock to the white overflow tube is connected so it discharges in it and that it's flowing when the ballcock fills. This is what raises the water level in the bowl. For a good solid flush they all have to work together. Hope this helps. Good luck, Tom

tonite i found my sink water had come up in the bathtub.

Tom, wouldn't this indicate a blockage or septic tank that needs pumped?