Washer/Sink incorrect

[marchingant]

This doesn't look correct to me. Any idea on how to fix it? the top right is the stand pipe for the washer and the bottom 1.5" goes to a utility sink. Thanks

 

[Plumber69]

Does it work? If so leave it

 

[Sponsor]

 

[Jadnashua]

If I understand what's going on, the WM standpipe does not have a trap, so it is open directly into the sewer. NOr, is it properly vented.

 

[Reach4]

If I understand what's going on, the WM standpipe does not have a trap,

The standpipe and laundry tub are sharing the trap. Sewer is on the left with the vent line, as I interpret the photo.