Stockholm Junior Water Prize is a competition for students aged 15 to 20 who have developed school projects that can solve major water challenges. The competition attracts thousands of entries from 39 countries. We are honoured to have HRH Crown Princess Victoria of Sweden as the Patron of the prize.


Stockholm Junior Water Prize has been held every year since 1997 and has become a popular part of World Water Week. The 2021 edition was however entirely held online and due to Covid-19. The award ceremony was held on 24 August, when the Prize’s Patron, HRH Crown Princess Victoria presented the winner of the 2021 Stockholm Junior Water Prize – Eshani Jha from the USA. Read more about the winners here

The 2021 Stockholm Junior Water Prize catalogue is now available

Competing in the finals are all the winners from the different national competitions. Their work is carefully reviewed by a jury of international water experts. 

The jury can also award a Diploma of Excellence to a particularly worthy project. In 2021, this was presented to Thanawit Namjaidee and Future Kongchu from Thailand, for developing a way to use organic waste material for moisture retention, thereby accelerating plant growth. 

In addition, the public can vote for their favourite project in the People’s Choice Award. This is a great chance to meet inspiring young innovators and get a sneak peek at their trailblazing ideas before (almost) anyone else. In 2021, this award went to Gabriel Fernandes Mello Ferreira from Brazil for developing a microplastic retention mechanism for water treatment. 

“Our finalists could be tomorrow’s leading scientists and we know from experience that their innovations can solve real-world problems. Many projects that started as part of the Stockholm Junior Water Prize are now being used, helping thousands of people in different parts of the world,” says Ania Andersch, Senior Manager Stockholm Junior Water Prize at SIWI.

Watch Crown Princess Victoria’s inspiring speech at the 2021 ceremony here >>>

Stockholm Junior Water Prize 2021 Catalogue
The Stockholm Junior Water Prize contestants get to learn from present leaders of the global water community. They also meet fellow students who share a passion for water and science. It's a once in a lifetime opportunity!
Ania Andersch, SIWI

About the competition

Each year, thousands of participants from almost 40 countries all around the globe join national competitions in hopes of earning the chance to represent their nation at the international final held during the World Water Week in Stockholm.

The national and international competitions are open to young people between the ages of 15 and 20 who have conducted water-related projects of proven environmental, scientific, social or technological significance. The projects range from local or regional to national or global topics.

The winner of the Stockholm Junior Water Prize receives a USD 15,000 award, a blue crystal prize sculpture, and a hand made diploma. The prize is awarded by HRH Crown Princess Victoria of Sweden, the Patron of the Stockholm Junior Water Prize. The winning school is awarded a diploma and USD 5000. Further a Diploma of Excellence is awarded together with USD 3000.

What does it mean to get to the international final?

Finalists from the participating countries are invited to Stockholm for five days where they take part in the global conference through a variety of activities. Inside the World Water Week conference venue, a poster exhibition of all student projects will give the finalists an opportunity to discuss their projects with the wide range of conference attendees, including researchers, politicians and media. Each of the finalists is further interviewed by a jury of international experts, who decide on the winner announced at the prize ceremony.

Finalists of the Stockholm Junior Water Prize are also invited to join WaterTank, an exclusive alumni network for finalists. Through this network, finalists are able to connect and collaborate with each other as well with expert mentors and advisors from leading organizations, such as Xylem Inc., Raincoat Foundation and SIWI. The aim is to help these bright minds advance their projects as well as keep them engaged in the water sector. Find out more about WaterTank here.

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