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`13
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`1.
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`A filter device for filtering drinking water, comprising:
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`a housing configured for submersion in a water reservoir, comprising an intake aperture
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`arranged for intake of water from the water reservoir and a return aperture arranged for returning water
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`to the water reservoir,
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`wherein the housing extends along an axis;
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`a pump, housed in the housing, arranged on the axis to direct fluid from the intake aperture to
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`the return aperture; and
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`10
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`a filter arrangement, housed in the housing, arranged along the axis from the pumpin a fluid
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`path between the intake aperture and the return aperture, and
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`wherein the housing further comprises:
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`a first end for manipulation of the filter device by a user; and
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`one or more spacers extending from a second end, the second end being opposedto thefirst
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`15
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`end, wherein the one or more spacers are configured for spacing the intake aperture from a surface of a
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`water reservoir whilst allowing a passage of water into the intake aperture.
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`2.
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`Thefilter device according to claim 1, wherein:
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`the housing is substantially shaped as a cylinder or prism.
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`3.
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`Thefilter device according to claim 2, wherein:
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`at least one of the pump andthe filter arrangementis substantially shaped as a cylinder or
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`prism, and arranged concentrically with the shape of the housing.
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`4.
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`Thefilter device according to any preceding claim, further comprising:
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`a sub-housing housed in the housing for containing liquid-sensitive components.
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`5.
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`Thefilter device according to any preceding claim, wherein:
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`the housing further comprises an access aperture, removably sealed by a sealing element, for
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`allowing access to internal components ofthe filter device.
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`20
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`25
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`30
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`6.
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`Thefilter device according to claim 5, wherein:
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`the sub-housing comprises the sealing elementor the sealing element comprises the sub-
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`35
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`housing.
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`7.
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`Thefilter device according to any preceding claim, wherein:
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`
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`the filter arrangement encloses a space in fluid communication with an outlet of the pump.
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`14
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`8.
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`The filter device according to any preceding claim, wherein:
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`the filter arrangement comprises a plurality offilters, wherein at least onefilter of the plurality
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`of filters has different filtration characteristics than another filter of the plurality offilters.
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`9.
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`Thefilter device according to any preceding claim, wherein:
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`the filter arrangement comprises a UV light source arranged to direct UV light towards water
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`in the fluid path.
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`10.
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`Thefilter device according to any preceding claim, wherein:
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`the pumpis an electric pump or a mechanically powered pump.
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`11.
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`Thefilter device according to any preceding claim, wherein:
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`the pump comprises a pumpintake arranged proximate to the intake aperture.
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`12.
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`Thefilter device according to any preceding claim, further comprising:
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`a backflow prevention valve configured to prevent a backflow of water out from the intake
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`aperture.
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`10
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`15
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`20
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`13.
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`Thefilter device according to claim any preceding claim, wherein:
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`the pumpis arrangedto direct fluid along the axis; and
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`the return aperture is arranged perpendicular to the axis.
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`25
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`14.
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`A system comprising:
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`a water reservoir; and
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`the filter device according to any of claims | to 13, wherein:
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`the intake aperture and the return aperture are in fluid communication with the water
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`reservoir.
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`30
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