Water Filter Jug

1 . 1 is a perspective view of first embodiment of a water filter jug; 1 . 2 is a front view thereof; 1 . 3 is a back view thereof; 1 . 4 is a left side view thereof; 1 . 5 is a right side view thereof; 1 . 6 is a top view thereof; 1 . 7 is a bottom view thereof; 2 . 1 is a perspective view of a second embodiment of the water filter jug; 2 . 2 is a front view thereof; 2 . 3 is a back view thereof; 2 . 4 is a left side view thereof; 2 . 5 is a right side view thereof; 2 . 6 is a top view thereof; and 2 . 7 is a bottom view thereof. The water filter jug is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. The even spaced broken lines in the drawings depict portions of the water filter jug that form no part of the claimed design.