Gallons per Cycle (gpc)

Gallons per cycle (gpc) references the amount of water used in a controlled period of flow (the “cycle”) of a fixture such as faucets and washing machines. The cycle can be controlled by either an electronic or mechanical device. The cycle is calculated using the flow rate in gallons per minute (gpm) and the duration setting (in seconds). For example, in a metered (timed) faucet, a flow of 0.5 gallons per minute for 30 seconds would be 0.25 gpc.