Private Well – Loss in water pressure.

Over the past week I have experienced a loss in water pressure. I live in a rural area with a private well. I would be taking a shower, everything would be fine, and then after a few minutes, pressure would reduce to a trickle. I would turn off the shower. Wait approximately 60 seconds. Turn it back on and it would be fine for a bit and then would reduce to a trickle again.

Here is what I have tried so far:

  1. Drained that pressure tank and checked the air pressure. This was set to 38psi
  2. Replaced the old pressure switch yesterday with a 40/60 and verified that it was turning on/off at the proper psi.

I thought this had fixed it as I was able to take a complete shower last night without any loss in pressure.

This morning when I got up. I took a shower and once again the pressure was fine at the beginning but once again reduced to a trickle.

Here is what I am seeing at the pressure tank:

  1. Pressure gauge shows 55psi
  2. Turn on water at a faucet near tank.
  3. Pressure slowly drops as expected.
  4. Audible click of the pressure switch when the gauge reaches 40psi and can hear water
  5. Gauge drops to 15 psi with a trickle coming out of the faucet.
  6. Turn off water
  7. Gauge jumps back to 40psi and very slowly (15ish minutes) builds from 40 back to 55.

My house was built in 2002, so I assume that the well/pump as well as the pressure tank are approximately 17 years old. I am not the original owner.

Any help would be appreciated. My initial thoughts are that the well pump screen is clogged or the pump is starting to fail, but before I call someone and come out I was hoping someone on here could give me some advice so I know how much I can expect to be spending, or if there is anything more I can do myself. Thank you!