Filter Assembly Sump Liner

Embodiments of the disclosure provide a sump liner for use with a fluid filter assembly in an appliance. The sump liner includes an open end configured to be coupled to the housing and a closed end opposite from the open end. The sump liner includes a body between the open end and the closed end with the body including at least one corrugated wall. The sump liner includes a cartridge-receiving cavity formed by the body and the closed end. The cartridge-receiving cavity is configured to at least partially cover a filter cartridge when the filter cartridge is inserted into and removed from the sump. The sump liner substantially prevents fluid from the filter cartridge from contacting the sump.