Does your water have turbidity in it? Is it kind of cloudy and not clear? Does a layer of sand collect at the bottom of a glass after a while?
Sediment, sand or turbidity in well water can be caused by a variety of things. It can often take a few weeks for sediment to settle in a newly drilled well. If an old well is starting to deteriorate or deplete it can start to produce sediment as well. Sometimes well pumps will pick up that sediment and bring it to surface.
We have many different ways to deal with this issue. Depending on how much sediment is actually present in the water would determine what type of filtration process we would apply to eliminate it. We have maintenance free, self cleaning, back-washing sand filters and in-line sand/sediment filters available.