An overview of my basic Greywater system.
I’m cheap and hate wasting anything so I got to thinking about greywater, my laundry area is on the back porch and had been just dumping in the backyard because I hadn’t tied it into the septic system yet. I had to install a surge tank which collects the water from the washing machine and allows it to be released in a slightly slower manner into the drip system.
The drip system came from Irrigray and is designed to handle greywater, it came with a filter, 5/8″ poly distribution line, and 150′ of 1/2″ dripperline with 4 gallon per hour drippers built into it every 12″. My orchard area has a slight N-S fall to it so I ran the dripperline 1′ north of each line of trees, these lines are run E-W and therefore end up being spaced 4′ apart.
To cover the drip lines I hauled in enough ground up tree trimmings from the tree service companies to cover the entire orchard area to a depth of 6″. The system has been operating now for 4 months. I can go anywhere in the orchard and pull back the mulch, even dead center between twosets of lines, and the soil is moist and full of worms. The filter is a 400 micron filter and it is claimed you only need to clean it twice a year, I have cleaned it twice now and neither time did it need it.
I am currently using ECO brand laundry detergent, it is supposed to be Bio-Compatible rather than Bio-Degradable. From what I have read the difference between the terms is that bio-degradable just means that the substance will break down into it’s component parts,whatever they are, when exposed to the elements and bio-compatible breaks down into environmentally friendly components. The main reason though that I chose this brand as opposed to Oasis, which is the main one you find recommended on the web, is that my local Costco carries it.
Isn’t that a nice picture? This is a view looking down into my surge tank, on the right you can see the black ABS drain pipe coming from the washing machine. The white 3/4″ PVC just below the drain pipe is connected to an automatic sprinkler valve. My son, who lives in the house at The Fruity Chicken, currently doesn’t do enough laundry to supply the water needs of the orchard. Rather than install a parallel irrigation system I ran this line to supplement the greywater, currently this valve is set to run for 2 minutes once a day.