Pretty much all domestic appliances equipment that drain water are fitted with a P-trap. All sinks, baths, and washing machines, all use a P-trap to drain the waste water away. London Plumbers are trained professionals. The P-trap is made of a tailpiece, the bent trap piece, and a drain elbow. The drain elbow for a P-trap connects to the drain pipe and that, goes straight into the wall.Sadly, the trap has a habit of collecting all kinds of things, like, hair, grease, debris, and soap scum. This can make the P-trap the the favourite location of blockages in the sewer system. If a sink trap is blocked, you will see a slow down of the water that is draining from the sink. The toilet holds the largest P-trap of any of the appliances in the home, so if should you have slow draining water in your fixture, clean the P-trap to avoid a complete backing up. Remove everything from below the affected sink so that you will be able to work comfortably. Then use these steps: Place a plastic bowl underneath the P-trap. Undo and take off the two nuts that are connecting the trap to the sink and the fitting at the wall. Use a brush or rod to clear the debris from the inside of the unit. Ensure sure that every part is fully clean inside and outside. Inspect all the washers they should be soft and supple. A Plumber is qualified to deal with blockages. Put the P-trap back together again, which is quite straightforward and then check that the washers are correctly positioned. The nuts should not be tightened too much, then check for leaks. Should the unit still be leaking, then tighten each one a little until the leaking stops. It is possible to twist the washers so be careful. Finally, if this doesnt fix the issue with the trap, you really should call a professional plumbing service.