The 1992 Energy Policy Act directed manufacturers to restrict the amount of water released from faucets. In some instances, this flow was reduced from 5 GPM(gallons per minute) at 60 PSI(pounds per square inch) to 2.2 GPM at 60 PSI. Therefore, it is advised that you do not remove the flow restrictor from your faucet. All OUBAO faucet exceed this government regulation. Most of our kitchen faucets and basin faucets come with 1.5GPM at 60 PSI.