The amount of water consumed by the sprinkler head and nozzle will vary depending on the pressure applied to them. The 5000 Series Rotor with the 3.0 nozzle, for example, will consume 3.11 gallons per minute while operating at 35 pounds per square inch (PSI) (GPM). If the total water capacity of your home was 10 GPM, you could install three heads each zone.
Standard sprinkler flow rates range from 4 gallons per minute (gpm) from a 5/32-inch nozzle at 30 pounds of pressure to over 11 gallons per minute (gpm) from a 7/32-inch nozzle at 70 pounds of pressure, with the latter being the highest.
In light of this, how much water does a sprinkler head consume? One hour of use of a normal sprinkler connected to an ordinary garden hose (5/8″) consumes around 1,020 gallons of water; if you run it three times per week, that equates to approximately 12,240 gallons per month.