Is this utility/laundry room waste pipe connection setup correct? All aspects of plumbing questions and answers, help, tips and information

[tylerberius]

I have a dishwasher and washing machine in a utility room off the kitchen. There are 2 separate waste pipe connections on the main pipe and I'm wondering if this is correct? https://ibb.co/V32rsCV (photo here)

It looks to me (as a very unqualified person!) as though if the dishwasher waste pipe flows downward the water will flow into the waste of the washing machine and into the machine itself.

It's a small space so I understand why it has been connected this way to allow room for a small shelf if we want one.

Any help is appreciated. Please ignore the electrics as an electrician is going to fix this.

[stoneyboy]

Hi Tylerbreius
No it’s wrong, both machines should feed into one side of the U-trap so that they are isolated from the waste system. It’s important that this is corrected or you may get waste into your dishwasher.
Regards S