FIG. 1 is a perspective view of a gallon water bottle showing my new design;
FIG. 2 is a perspective view thereof in its open position;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a left side view thereof;
FIG. 6 is a right side view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof; and,
FIG. 9 is a left side view thereof in its open position.
The broken lines are for the purposes of illustrating portions of the gallon water bottle and form no part of the claimed design.