FIG. 1 is an isometric view of a top, front, and left side of one embodiment of an ornamental design of a water quality monitor;
FIG. 2 is a front elevational view of the water quality monitor of FIG. 1;
FIG. 3 is a rear elevational view of the water quality monitor of FIG. 1;
FIG. 4 is a left side elevational view of the water quality monitor of FIG. 1;
FIG. 5 is a right side elevational view of the water quality monitor of FIG. 1;
FIG. 6 is a top plan view of the water quality monitor of FIG. 1; and,
FIG. 7 is a bottom plan view of the water quality monitor of FIG. 1.
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