Deep infiltration- challenges with branched drain systems

Since branched drain systems have a constant downward slope, sometimes the infiltration ends up being deep underground. In this yard there were two obstacles that the pipe had to go under, a cement path and a water line, resulting in a very deep system. In these situations it takes more work (digging!) to create the system, and if the trees are young, more time for their roots to access the water. The greywater pipe releases its water a few inches above the mulch, and the mulch shield is usually covered with a paving stone. This mulch shield was made from stacked five and three gallon plastic pots in order to be deep enough.