How do I stop/fix dirty water from coming up utility sink?

Seems when I run the dishwasher and now the laundry smelly black water comes up utility sink and bathroom sink in basement. After it slowly drains, it leaves behind black dirt. Public sewer.

This entry was posted on Thursday, August 1st, 2013 at 6:12 pm and is filed under Utility Sink. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.