Linen Cabinet

6 Responses to “water leaking under bathroom sink cabinet?”

1. 

   former ebayer
   

   11. Jan, 2010

   Try turning the water on all the way when your looking under the sink. Sometimes you need to fill the drain line before the water will leak. My guess its going to be the connection right at the top of the drain.
2. 

   Stephen P
   

   12. Jan, 2010

   You will have to get down there with a flash light and watch what happens. Is it during idle conditions? Is it leaking during usage of water? If you are patient, it will show itself. Good luck.
3. 

   redneckskater7684
   

   15. Jan, 2010

   you could soap up all of the plumbing under the sink then crank up the air compressor and run air through your lines and the spot on the pipe that starts to bubble is leaking. It works on tires and innertubes so it should work this way. lol
4. 

   Mother knows best!
   

   18. Jan, 2010

   it could be that the bottom of the elbow of the PVC pipe is come loose ,try to tighten it , in the mean time place a plastic container under the sink to prevent the water from puddling and even rot the vanity,
   If you go to Home Depot in the plumbing department you might find some tape to seal the leak ,but for the moment dry the PVC pipe properly and wrap it with some duck tape , this is only a Band -aid repair , but it’s better then having water all over !
5. 

   pinspeed1
   

   18. Jan, 2010

   if water has been used and the puddle appears, it’s probably the drain.

   if no water is being used and the water appears, it’s the water pipe(s).

   it sounds like the water pipes if i understand you correctly.

   turn off the valves under the sink as a first step.

   if the puddle stops, then your problem in the faucet hook ups or the faucet itself

   if the water continues, you problem is probably behind the wall.
6. 

   Eric H
   

   21. Jan, 2010

   If the water is just appearing when you are not using it i’d bet its a loose packing nut on one of the shut off valves