Abstract: A portable waste disposal system for cementuous slurry comprises a collapsible wire cage, a waterproof containment bag inside the wire cage and a filtration bag inside the waterproof containment bag. The system enables the cementuous slurry generated during the plastering of a swimming pool and pumped from inside a swimming pool to a location adjacent the pool be disposed of quickly and safely. The liquid generated during the process may be neutralized and left on site, thereby avoiding transport of such liquid.