Abstract: A gravity-driven fluid filtering system that includes a universal fluid (typically water) filter and a plurality of differently sized fluid dispensing adapters. The universal fluid filter includes: at least one gravity-driven fluid filter media; a housing having an interior and at least one fluid inlet aperture configured to allow a fluid to be treated to enter the interior of the housing by a force of gravity and into contact with the at least one gravity-driven water filter media spaced within the interior of the housing; and at least one treated fluid outlet aperture configured to deliver treated fluid to at least one of a plurality vessels each having a differently sized fluid receiving aperture. The plurality of differently sized fluid dispensing adapters each having a sloped and contoured fluid receiving portion, which is different for each adapter.

Abstract: A gravity-driven fluid (water) treatment device that includes a bottom portion having at least one treated fluid outlet, an upper perimeter, and a bottom portion side wall that defines an interior volume of the bottom portion and wherein the bottom portion side wall is a shaped surface that is configured to frictionally engage a plurality of differently sized fluid vessel openings and still allow treated fluid to be delivered to the interior of a fluid vessel through the at least one treated fluid outlets; a fluid treatment medium positioned within a fluid filter; and a top portion with an interior volume defined by at least one wall. The fluid filter, the bottom portion and the top portion are each configured to be removably engaged and disengaged to allow for replacement of the filter and reassembly of the overall gravity filter assembly by hand and without the use of tools.