You might have noticed that there seems to be a cap as far as water pressure is concerned. This is because the EPA regulates that all nozzles offered for sale can not exceed 2.5 gallons per minutes. Now, this doesn’t mean that the EPA is going to bust down your door and arrest you if your nozzle produces more than that, but it means that Captain Planet might want to speak to you about water conservation. Some find that 2.5 GPM doesn’t produce enough power to really kick off the grime after a long day of outdoor adventures, so many companies offer an easy way to remove the water regulator in an effort to create a more powerful stream.