Water slide

The water slide or pool slide is a Build mode object which was introduced in The Sims: Vacation, and re-introduced in The Sims 2: Seasons. It must be placed along the edge of a swimming pool to be useful. Unlike the diving board, Sims have no fears or reservations about using the water slide to enter the pool.

The Sims 3: Generations
Buy mode in The Sims 3: Generations has the Ultimate Backyard Slide and the Rib-it Rib-it Froggy McFrog Slide, which are are water toys that resemble a Slip 'n Slide, and are generally referred to as water slides.