The Stockholm Junior Water Prize (SJWP) is the world's most prestigious youth award for a water-related science project. Established in 1997 by the Stockholm Water Foundation, the competition challenges students aged 15 to 20 to develop innovative solutions to major water challenges of environmental, scientific, social, or technological significance. Each year, tens of thousands of students from approximately 40 countries participate through national competitions organized by local partner organizations. National winners advance to the international final held during World Water Week in Stockholm, Sweden, where they present their research to a distinguished jury of international water experts. The competition aims to raise awareness of global water issues while empowering the next generation of water scientists and innovators. Current entry-fee terms are not stated on the global competition page and should be checked in the applicable national rules.
As checked November 4, 2026, the global competition requires national-organizer nomination, ages 15–20 and current secondary-school attendance; university-enrolled students cannot submit. A maximum of two students represents each project in Stockholm. There is no single worldwide student application deadline.
The Australian national organizer’s 2027 call lists the international competition in August 2027 during World Water Week in Stockholm, without exact finalist attendance dates. Its February 26, 2027 project deadline applies only to Australia. The prior catalog’s August 23–27, 2026 span is historical and was not verified as the actual finalist attendance dates.
Sources: global competition and eligibility, national-organizer route, and Australian organizer’s explicit 2027 timeline.