I'm getting about 5 GPM (using a bucket and a watch) and mediocre pressure from my well. It's a 1/2 HP pump into a tank with 40 PSI reading on the tank pressure guage. Is there a way to improve the volume and pressure?
I'm guessing volume is a function of the pump so I'd have to get a bigger pump to get more water.
Can the pressure switch or the tank precharge be adjusted in order to increase the pressure from the faucet?
Volume is the thickness of the impellers. Pressure is the result of more stages or impellers.
You need to be more specific. Do you get 5 gpm at 40 psi. Or do you start at 40 psi and then the pressure drops as you draw the water.
Rancher is right in asking how you measured your flow rate. Just sampling from a faucet may show many different types of problems. Such as a valve partly shut off can result in low pressure when the well and system is fine. Also rusted water lines or fittings can cause problems.
Can you pump straight from the well and determine the water level? This would give the capacity of the well and indicate if you have probems in your water system.
Assuming you have a jet pump. 6 gallons per minute at 40 psi with a lift of 10 feet is about what can be expected from a 1/2 hp.