A low maintenance bag filter system designed to remove large solids, dirt, and debris over 100 microns in size from the waste stream. Two styles to choose from: gravity flow or pressurized flow. The four and six bag gravity flow is designed for larger solids removal, whereas the four bag pressurized flow is utilized to filter out fine silts, clays, and biological slime. System comes equipped with a transfer sump pump for discharging or transferring to further treatment.