Washing Machine Draining Into Bathroom Sink

Both drains may empty into a toilet waste line and be.

Washing machine draining into bathroom sink.

Why does this happen. This install is in a basement so it would be very difficult to cut more concrete or run a separate line to the sump. Pull the washing machine out and check the connection where the flexible hose goes into from the washing machine. I m redoing a bathroom laundry room and have a washing machine and sink that could easily be combined into one drain and vent if it s okay.

Gray water from your washing machine backing up into your sink is one such problem and for many homeowners it can be an ongoing source of annoyance. A my biggest question is whether i can drain the washing machine and a sink into the same 2 drain vent. The thing that got me thinking about this in the first place is that we are thinking of moving the washing machine to a different wall. If the only time the sink backs up is when the washing machine is draining there s a good chance that they both empty into a common fitting.

Others go into a fitting on the u bend under the sink. The laundry room and bathroom with the sink are adjacent and the washing machine drains into a drain in the wall which i assume merges with the sink drain which is slightly lower. This means they combine at some point on the way to the main sewer line. Some hoses go into a vertical pipe which prevents the water draining back into the machine.

If the sink drain isn t 2 the only options are 1 send the hose into the sink like it is or 2 run 2 drain to the dwv which would involve cutting up the floor. This is in virginia. The washing machine drain 1 5 would run horizontally along wall pick up the lavatory drain still 1 5 and wye into a 2 drain with the shower which then wyes into a 3 drain with the toilet and on to a sump. This means that when the washing machine starts releasing water down the drain that is connected to the sink drain the air will actually be trapped inside the main drain pipe.

Thanks for all the replies. To start with know that your sink and washing machine drain lines tend to run congruent to each other. This problem began only after we purchased a new washing machine and i am afraid the machine just pumps. Any other option would be a lot more work.

They may also back up when other fixtures are draining. In that case the first place where the air can leave is the vent but if the vent is clogged that means that the air will exit through the sink drain.