Water drops when using a hose
I have a deep well that has a tank with a bladder and also a pressure switch which is set for 40 low turn on / 60 high turn off. The system seems to work fine . Ive cycled it a few times. Turns on at 40 shuts off 60. The bladder tank seems to be OK . Ive checked it when empty and its set for 38 psi. Now the problem is in the house. The pressure in the house is 50 psi when pump turns off. Stays there till I turn on the hose then it starts dropping even below the 40 turn on point. When I turn off the hose the pressure will go back up. Could there be a volume problem?
The pipe from pump is 1" then it reduces in the house to 1/2.The pump is in the well and the tank pressure swith and well head are in a vault in the back yard.
Any help would be appreciated.
Thanks