Hi, For some reason I can't get the gauge for my water tank to go over 25 psi. The problem started about a month ago. We have three bathrooms (2 upstairs one downstairs.) The water pressure use to be great, two people could shower in the two upstairs bathrooms at the same time and still have great pressure. Now the pressure stinks. The pressure switch is a 30/50 so I replaced it thinking that might help the problem, but it didn't. The gauge only went up to 25 psi. I tried fiddling with the cut on/cut off adjustments but can't get it to go over 25 psi. So then I bought a new bladder tank thinking it was worn, because the house is ten years old. I installed a flotec 35gallon from home cheapo. The tank came with 40psi factory pressure, but the instuctions said I had to lower the air pressure to 28psi because of my 30/50 pressure switch. I installed it with no problems and still the darn thing when turned on only goes to 25psi, and my water pressure still is terrible. Please help I'm at my wits end, and I just know If I call a plumber he is going to charge a ton, and times are tough.

When the pressure reaches 25 PSI does the pump cut off or keep running?
When the pump stops does the pressure hold steady? Let me know, Tom

I can't tell if it is on or off, but when I turn off the switch to the pump the pressure drops to zero

You have, in all probability, a leak in a pipe somewhere. It leaks and prevents pressure from building up properly, and then allows water to drain out which puts pressure back to zero. It is probably in the well since you would likely notice a leak "upstream" of the pressure tank.

Is your pump in the well or above ground?

As well as a leak nin the suction line you also could have a bad check/foot valve. That would give you yhe same symtems. Good luck, Tom