We purchased a home that is 8 years old, but it sat empty for 2 years before we purchased it. The home has three floors and we are having a problem with the water pressure on the top (3rd) floor. The toilet, and sink are fine, it's just the shower/tub. When the water is running it just drizzles. After running the water for 10 mintues, there is a slight increase in pressure, but then it returns to a drizzle after about 30 seconds. We have noticed on our well pump in the basement that the pressure is only at 32...Is that too low or are we looking at something else possibly being the problem?