 Finally, some folks install a gray water drywall or other arrangement to drain the dishwasher and clothes washer into. That may be okay, but you need to check with local regulations. Check in with the health department to see if gray water in your part of the world is okay. Get your questions answered live, Saturday afternoons on KRDO Newsradio, 105.5 FM, 1240 AM, and 92.5 FM.