I am no longer getting enough water from our well. The pressure tank is at 28 psi. I replaced the pump about 4 years ago. We still get water but very slowly. Any ideas on what my well problems might be?

Do you have any water filters or a water softener?

How deep is the well, and how much sediment do you have? If your well goes into a rock bed then often times the screen gets clogged up and the pump with pump the same but the supply is greatly depreciated.