The FXAF-12 is a single-housing water treatment system with a drop-in 20” cartridge that takes out dirt, rust and other particulates down to 5-microns. The system can be used as a point-of-use sediment reduction filter; or it can be applied prior to a primary filtration system to provide additional pre-filtration to protect against premature plugging due to excessive dirt and sediment levels found in some water supplies.