Sediment Water Filters are used to reduce or completely remove physical particles that are larger than a particular size from source water. Typical sediment filter is rated at 20 micron (ok), 10 micron (better), 5-1 micron (better yet) , or sub-micron (less than 1 micron, best but the slowest). A micron rating means that all particles larger than that will be trapped by a filter.
Commonly used Sediment Water Filters are spun or pleated. Spun filters use polypropylene, cellulose or similar material that is spun to produce a filter. They are cheaper and will wear out faster. Pleated filters have more dirt holding capacity, some of them can be washed, and they last longer