Laundry-to-landscape (L2L) System in Interior-walled Laundry Room

Greywater going through floor to crawl space

The difference in a system from a washing machine located in a room with interior walls, as opposed to one with an exterior wall, it that the greywater pipe typically exits through the floor.

This laundry room has a crawlspace underneath, so the greywater pipe can exit through the floor, and run through the crawlspace before it reaches the landscape. In this situation the auto-vent must be installed inside the house, at the high point in the line before the pipe drops down.

Half inch lines to to plants

Once outside, the 1 inch PVC pipe transitions into a 1 inch high density polyethylene (HDPE) tubing, with 1/2 inch outlets directing greywater to the plants.