I have a bathroom sink that has started to drain slowly. There are 2 sinks in that bathroom, and the other sink drains just fine. The pipes and joints are PVC and the construction is fairly new. We are careful not to allow anything except soap and water to go down both drains (well, and whatever the soap is removing, of course, but there are no large particles or grease).

I get dirty a lot, so the slow-draining sink gets a lot of action from me washing my hands. I'm thinking maybe it is soap buildup causing it to drain slowly. Does that sound like a reasonable hypothesis?

I've tried a few soap buildup drain cleaner products, and they all help a little, but not too much. After a month or so, I need to do it again.

How can I make the water drain quickly and prevent this issue from happening again?

  • Get the (almost always) hair out of it. Mechanical means (as per @diceless answer) work better than chemical means. It's often hung up on the stopper.
    – Ecnerwal
    Nov 15, 2014 at 15:33

1 Answer 1


It it is a new build, then removing the trap under the sink will not be an issue. Just loosen the nuts, remove the trap (have a pan underneath) and then clean the trap. This is most likely the source of the slow draining. If the trap looks clean, then get a hand auger (snake) to clean the drain line. It is best to do this with the trap out. Hand augers are typically half the cost of a plumber call. If it is still slow, then your drain vent might be clogged. At this point, it is usually cost effective to call a plumber to clear the line.

  • 1
    Also, while you have the trap out, check the tailpiece that leads from the sink to the trap.
    – TomG
    Nov 15, 2014 at 15:09
  • +1 for hand augers. Those are VERY helpful for all sorts of drain issues.
    – Mike B
    Nov 16, 2014 at 18:43

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.