Greywater system · Site diagram
Where the wash water goes
Where the wash water goes
Flowchart showing washing-machine drain water reaching a 3-way diverter valve that sends greywater to subsurface irrigation for fruit trees, or blackwater to the septic tank.
GARDEN
SEPTIC
Washing machine
50 mm drain line
3-way diverter
valve
Subsurface line
25 mm poly · 1:50 fall
Fruit trees
roots, not leaves
Septic tank
blackwater
LEGEND · SHAPE CARRIES TYPE
Start / end (oval)
Step (rectangle)
Decision (diamond)
Garden path
Septic branch