Hi everyone. I have a Well Mate NM14-wb tank that is abut 13 years old. I just noticed that the tank does not hold its pressure after the well kicks off. The kick off pressure is at 50psi and will drop to about 34 psi. It will stay at that until water is drawn and then the well kicks in at 30 psi. So it's not losing all its pressure but can't figure out why it is dropping so much after the well turns off. I do have a check valve right before my water tank to help water flowing back out of the house. There are two check valves before the well pump as well. They were put in when the pump was replaced 13 years ago.

I would appreciate any info anyone could could provide.

Thanks,

Scott

Turn the valve off that goes to the house, that'll tell you whether the water is going down a drain somewhere or whether there's a slight leak in the underground piping or in the well. A temporary valve may be installed at the well head to further isolate the leak.