Aquaslash

Aquaslash is a 2019 Canadian slasher film directed by Renaud Gauthier, who also co-wrote it with Philip Kalin. It stars Nicolas Fontaine, Brittany Drisdelle, Madelline Harvey, Lanisa Dawn, Paul Zinno, Nick Walker, and Chip Chuipka. It is set at a water park, where a killer targets a group of recent high school graduates who are in competition for a cash prize for the fastest team to slide down the park's water slides. Critical reception for Aquaslash was predominantly negative.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.