Toilet plunger splash prevention

A system for containing the splashing produced when using a toilet plunger to unclog a flush toilet, wherein said toilet comprises a bowl with an upper opening and a lower drain mouth below said upper opening, and a bowl rim with a flat horizontal upper surface surrounding the upper opening of said bowl, and wherein said plunger comprises an elongate handle shaft and a deformable plunger cup mounted thereon for positioning over the drain mouth of said bowl, said system comprising a stiff unitary uniformly thick splash plate having an outer perimeter edge and a flat perimeter border inwardly adjacent to said perimeter edge, said plate being of a size adapted to cover the upper opening of said bowl when the flat perimeter border of said plate is rested upon the upper surface of said bowl rim, said plate being visually transparent and having a central aperture formed therein of a size dust sufficiently large to permit free movement therethrough of the handle shaft of said plunger, said splash plate having an inner contoured portion substantially encircling said aperture and located inward of said flat perimeter border, the contour of said inner contoured portion being a protrusion out of the plane of said flat perimeter border, said protrusion being less than about 3 cm in height and being effective to enhance the overall stiffness of said splash plate, the area of said protrusion being less than the area of flat portions of said splash plate, and said splash plate having a uniform thickness of less than about 0.5 cm, wherein the outer perimeter edge of said splash plate has a curved edge portion lying in the plane of said perimeter border and a substantially straight edge portion lying in the plane of said perimeter border, and wherein said splash plate additionally comprises a perimeter flange depending downwardly solely from said curved edge portion of said perimeter edge.