I have a Submursible pump in my well. and a holding tank in the houes, My question is the water pressure drops alot before the pump kicks on and the pressure guage says it has 30 lbs pressure in it. The pressure is set 40lbs off 20lbs on. Why does the pressure at the faucets drop off so much while the pressure guage still reads around 30lbs. The whole system is only about 6 months old. We didn't have this problem with our Jet Well pump.