Schreiber's Fuzzy Filter is a compressible media filter for water and wastewater treatment systems. Media compression permits adjustment of the filter pore size to meet process changes. The filter is very high rate, compact and modular, and is applicable to a wide variety of water and wastewater applications. Operating in an up flow design, the filter achieves an exceptionally high rate of solids removal through the use of synthetic fiber spheres. With loading rates 30-40+ gpm/ft2, the filter requires 20% of the floor space as sand filters. Applications include tertiary wastewater treatment, influent river water, Pre-RO water cleansing, contaminated stormwater, membrane backwash water and cooling water side stream filtration.