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Garden Size vs Graywater Volume.
In this example, 3 people live in a house with total garden space of 1,000 square feet, with good quality loam and reasonable drainage.
The total amount of water required each month is 2 gallons / sq ft = 2,000 gallons per month.
The residents generate 3 (people) x 25 (gallons per day) x 30 (days per month) = 2,250 gallons per month.
The small amount of excess graywater is unlikely to cause over watering.
The garden beds are 3' wide, with a total length of 330'. Only one dripperline is required down the middle of each garden bed.
100' of graywater dripperline (Irrigray 2 gph dripperline) irrigates at 2.5 gallons per minute, so the total irrigation capacity per minute is 7.5 gallons per minute. This is ideal as the system can easily cope with two showers running simultaneously without losing water to overflow in the pumping system.
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