Add a wall hanging laundry tub and standpipe with an air admittance valve

Older laundry tubs drain the washing machine leaving dirt and soap scum stains.

Discharging the rinse water into a standpipe keeps the tub clean. Using an air admittance valve ensures the tub will drain smoothly and gives you a clean-out. And the hanging unit allows for adjusting the height higher or lower, and removes the legs being on the floor.