Is there a possibility that it could be the pressure tank? The system does not hold pressure after shutting off the pump. I removed the well cap and could not see/hear a leak, and the ground from the house to the well seems solid which would rule out a supply line leak. I also could not notice a valve/fitting for the air bladder so it may be possible it is a bladder-less tank given its age. There are also no more remaining branding stickers left. The water also seemed to be slightly better this weekend, so again, it seems to fluctuate, but is never back to 100%?????