A water slide extension system for sliding down and for recreational use includes a slide that has a top surface, a bottom surface, an entrance end and an exit end. The exit end is perpendicular to a ground surface. A water dispenser is included and placed on the slide to dispense water onto the slide. An extension is releasably coupled to the exit end of the slide. The extension catches water from the slide and receives a person from the slide such that the person slides on to the extension. A plurality of coupling units is attached to the extension. Each of the coupling units releasably couples the extension to the ground surface.