Beyond the obvious features like style and functionality, there are several things to consider as you search for the best kitchen faucet: Mount types, finishes, and flow rates, were examined. A kitchen faucet’s flow rate, also known as gallons per minute (GPM), refers to how many gallons of water flow through the faucet per minute. You’ll typically find kitchen faucets with a flow rate of 1.8 GPM, with more eco-friendly options featuring a flow rate of 1.5 GPM.