The PUTRA Water Rocket Challenge (PWRC) is an exciting event of Karnival Jom Sains 2026 (KJS 2026) that challenges students to design, build, and launch a water rocket. This competition encourages participants to apply Physics concepts such as air pressure, thrust, aerodynamics, and flight stability while experimenting with launch angles and rocket design to achieve optimal performance. Through hands-on experience, students develop critical thinking, creativity, and problem-solving skills within the field of STEM.

Open to secondary school students nationwide, participation is in teams of three with an entry fee of RM15 per team. The competition will be held on 15 April 2026, with registration closing on 23 March 2026. All related expenses are the responsibility of the participants. Certificates will be awarded to all participants, with attractive prizes for the winners.