I’ve always wanted to do more with greywater (also spelled graywater, gray water and grey water) — waste water from dishwashing, laundry, and bathing — but as a renter, I wanted to invest my money and energy in a way that was more portable than traditional systems. I started by looking into rain barrels as a way to cache water and was amazed at how expensive they were. Then I found a few 5-gallon buckets at a construction site, and came up with this simple grey water irrigation setup that has worked well for me for the past two summers.
The setup is a 5-gallon bucket with a tap inserted, hooked up to a commercial drip irrigation system in my raised garden beds. I use one bucket per 2-foot-square bed.
I clean the buckets, drill a hole, and insert a garden-hose-sized tap. To keep the tap from leaking, I cover the thread with Teflon tape, put a washer on the inside of the bucket and use a plastic hose coupler to secure the tap. I hook this up to the drip irrigation system.
The drip irrigation kit was the most expensive part of this system at about $25. The tap and accessories totaled a little less than $6. I live in northern Arizona, and during the heat of high summer I use a full bucket a day in my sunniest bed.
The source of the grey water is the leftover water from washing dishes, which I collect in another 5-gallon bucket I keep by the sink.
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