A project designed by Holly Zickler and David Rifkind
Friday, April 15, 2011
purple (plumbing, p.2)
As we noted the other day, there are two sets of drain lines in the house. The regular waste lines leading to the septic system are white PVC. The drain lines leading from the bathtubs and showers to the graywater tank are PVC painted purple, which, apparently, is now the international color code for graywater.