As recreational waterslides become more popular, an increasing number of riders will experience injuries. Sixty-one consecutive patient charts obtained form two different sources reveal distinct patterns. Riders have sustained lacerations (53%), contusions or abrasions (25%), fractured bones (7%), sprains (7%), fractured teeth (6%), and concussions (3%). Most frequently injured are head-first position. The ratio of fiberglass slide injuries to concrete slide injuries is 12:1 in our series. The potential for waterslide injuries is underestimated by physicians and dentists until a flurry of cases occur in the community. Epidemiologic study is needed to develop accurate rates of incidence, severity, and levels of risks by type of waterslide construction.