The ornamental design for a wastewater solid wastecatch, as shown and described.
FIG. 1 is a rear and top isometric view of a waste water solid waste catch showing my new design;
FIG. 2 is a left side view of the waste water solid waste catch, a right side view being a mirror image thereof;
FIG. 3 is a rear view of the waste water solid waste catch;
FIG. 4 is a bottom view of the waste water solid waste catch;
FIG. 5 is a top view of the waste water solid waste catch;
FIG. 6 is a front right isometric view of the waste water solid waste catch, the portions in phantom being for illustration only and forming no portion of the claimed invention; and,
FIG. 7 is a front view of the waste water solid waste catch.