A filter housing comprising: a canister having an open and a closed end; and a fuel filter monitor in the form of a pleated ePTFE membrane supported by a pleated nonwoven support structure adjacent to the ePTFE membrane; and a tubular extruded plastic support cage wherein the seams and edges of said pleated ePTFE membrane are integrally sealed in said canister such that a fuel stream passes through said pleated ePTFE membrane and out said open end of said canister; wherein the fuel filter monitor contains no super absorbent polymer for water wherein (a) the ePTFE membrane has a bubble point > 50 psi (345 kPa), the Bubble Point being measured according to ASTM F31 6-03 and using a silicone fluid having a surface tension of 19.1 dynes/cm; and (b) the support structure has a burst strength > 50 psi (345 kPa) and the ePTFE membrane is disposed upstream of said support structure in said fuel stream, whereby fuel filter monitor: - prevents penetration of water to the downstream of said fuel filter monitor, where the water can be in the form of discrete water drops in the fuel or a bulk water stream which displaces the upstream fuel, and - stops fluid flow when challenged with a bulk water stream. a canister having an open and a closed end; and a fuel filter monitor in the form of a pleated ePTFE membrane supported by a pleated nonwoven support structure adjacent to the ePTFE membrane; and a tubular extruded plastic support cage wherein the seams and edges of said pleated ePTFE membrane are integrally sealed in said canister such that a fuel stream passes through said pleated ePTFE membrane and out said open end of said canister; wherein the fuel filter monitor contains no super absorbent polymer for water wherein (a) the ePTFE membrane has a bubble point > 50 psi (345 kPa), the Bubble Point being measured according to ASTM F31 6-03 and using a silicone fluid having a surface tension of 19.1 dynes/cm; and (b) the support structure has a burst strength > 50 psi (345 kPa) and the ePTFE membrane is disposed upstream of said support structure in said fuel stream, whereby fuel filter monitor: - prevents penetration of water to the downstream of said fuel filter monitor, where the water can be in the form of discrete water drops in the fuel or a bulk water stream which displaces the upstream fuel, and - stops fluid flow when challenged with a bulk water stream. (a) the ePTFE membrane has a bubble point > 50 psi (345 kPa), the Bubble Point being measured according to ASTM F31 6-03 and using a silicone fluid having a surface tension of 19.1 dynes/cm; and (b) the support structure has a burst strength > 50 psi (345 kPa) and the ePTFE membrane is disposed upstream of said support structure in said fuel stream, whereby fuel filter monitor: - prevents penetration of water to the downstream of said fuel filter monitor, where the water can be in the form of discrete water drops in the fuel or a bulk water stream which displaces the upstream fuel, and - stops fluid flow when challenged with a bulk water stream. - prevents penetration of water to the downstream of said fuel filter monitor, where the water can be in the form of discrete water drops in the fuel or a bulk water stream which displaces the upstream fuel, and - stops fluid flow when challenged with a bulk water stream.