I've had this problem for awhile now. There's been some really bad scum buildup under my bathroom sink, so I took apart the u-bend and the PVC that connects to the main hose that goes into the wall and cleaned those out, but I noticed that the main black hose that connects to the wall is dripping. This leads me to believe there's some kind of leak in the main water distribution system in my house, because essentially water is leaking from the pipe that connects to the wall.

I turned off the water to the sink, but the dripping persists. I've attached some pictures to help illustrate. The black hose is where it's dripping. The rest I've disassembled and cleaned.

Thanks for any help in advance.

Picasa Web Albums - ZachWulf - Plumbing

Picasa Web Albums - ZachWulf - Plumbing

Sounds like that hose is probably connected to the a/c unit and that's the excess water coming from the a/c.

Thanks for your help. So how do I go about fixing this?

This is not a pressure line this is a drain line I would suggest to rmove the pipe go to home depot buy a new hose 2 new clamps at the sams size and replace, good luck.

John

I agree with responses above: it appears to be a condensation line from your A/C unit. It drains by gravity. Do as Afaroo suggests and you should be fine.

Thanks for the info guys. I took apart the rest of the PVC, and the problem isn't in the connections of the pipes.

The problem is where all the water drains into. There was scum all clogged up in that pipe, and there's probably more where I can't reach.

There's something clogging the drain where everything goes down, and it all gets backed up into the sink and leaks through the pipes. What can I do to unclog it without going into the walls?

Can I fix this myself, or do I need a plumber?

Now you need to use a snake, see the images below, Thanks.

John

Used a 25' snake, cleared all that nasty stuff up. Thanks everyone, I really appreciate all the help.