Thanks in advance for any help, I dont no much about my well, except that its 140' deep with a submersible pump. ZI just bought this house and the reserve tank, filter, etc. is new but i am not sure about the pump. I do know that its a 4" casing. It runs for about 5 secs then shuts off, after 2 mins it starts again for 5secs and so on and son on til the pressure is built in the tank. Does that mean i need a new pump. I checked the pressure switch and it seems to be working fine, Thanks in advance. Let me know if anyone needs any more info, ill see what I can find out BTW, I was told that when we moved in the well flowed about 10gpm.