Do you know if it's a shallow well (dug) or deep drilled well. A
shallow well can fill with ground water (run-off) and rise to the
surface. With a deep well the casing may be cracked allowing water to
reach the surface. Most often though, water around the top is usually
an indication of poor grading. The well casing may need to be raised a
bit and back-filled with a bit of soil.