Solving one paint-cleanup dilemma

The drawing shows how I get rid of the 20 gal. of paint-tinged water that it takes to clean an airless sprayer. Of course, I could haul the sprayer through the house and dump the water into a toilet or a sink, but that doesn't always score big points with the client. Instead, I search around the foundation of the building for a sewer clean-out. If I find one, I hook up the pictured funnel. This gets me into the sewer system and out of the house.

Frank M. Marlow, Huntington Beach, CA