I have a well that has a submersible pump about 400 feet from the house. The well head is also about 100 feet lower than the house. It seems this pump pulls water from the well and feeds into a rather large storage tank. This storage tank has a float in the top of the tank that controls the submersible pump. From the storage tank there is a jet pump feeding a new captive air tank, and then feeding the house. The jet pump seems to run almost constantly and is showing about 75 psi on the guage mounted to the pump. I have pondered this issue and feel that I may have a bad pressure switch on the jet pump. Thoughts???