A jandy three way ball valve is inserted into the drain for the washer. The wash water can either drain into the utility sink (on left) that drains to the sewer, or travel through the greywater pipe (on right) that goes outside to the bamboo.

The greywater pipe leaves the house and goes through a backflow preventer before being burried under the ground. The pipe travels a short distance buried, dropping 1/4 per foot. 

When the pipe reaches the bamboo clumps  it is stepped down from 3/4" to a 1/2" line. It then flows into 6 buckets that infiltrate the greywater into the ground at the base of the bamboo. The buckets have the bottoms cut off and a small amount of gravel and hay at the bottom. The  ends have caps put on and drilled to make the flow even. (Before the end-caps were installed the water came out of the first two buckets only. Now the water comes out of all six buckets.) 

Each infiltrator bucket has a lid that normally covers it to prevent dirt and leaves from filling the area.  The buckets are hidden behind the large bamboo.