Read about the competition and how to enter in our 2020 guidance documents

About the UK Junior Water Prize


Report guidance Judging criteria

Take part

The UK Junior Water Prize offers a once in a lifetime experience for young people interested in maths, science, technology and engineering. The winning entry will qualify for an all-expenses paid trip to represent the UK and their school at the Stockholm Junior Water Prize which takes place during World Water Week in Sweden.

To find out more about the international round of the competition visit www.siwi.org/prizes/stockholmjuniorwaterprize/.


Benefits of taking part include:

    • Gain fantastic CV experience for your University application or starting a career after school
    • The opportunity to attend the UK Junior Water Prize judging day at the Big Bang Fair, the largest celebration of science, technology, engineering and maths (STEM) for young people in the UK.
    • The chance to display your project at the international World Water Week conference to an audience of academics, researchers, politicians and the media
    • The chance to attend a gala dinner with patron of the award HRH Crown Princess Victoria of Sweden
    • Become a Junior Water Prize alumni, enabling you to network with peers and potential mentors and sponsors from around the world
    • The chance to win the Stockholm Junior Water Prize cash prize of $15,000 USD!


For more information on the UK Junior Water Prize read our guidance.

About the UK Junior Water Prize

Enter now

The UK Junior Water Prize is aimed at solving environmental challenges with a link to water, which we know is super important for our future!

For the competition, you need to identify an issue and undertake some research and experiments to find a practical and innovative solution. A write up of this work can then be entered into the UKJWP.


You are eligible to take part if:

    • You are going to be between 15 and 20 years of age for World Water Week in August 2020
    • You haven’t started University yet
    • You started your project whilst you were at school
    • Your school or college is in the UK.

You can take part on your own or in a pair, as long as both partners meet the eligibility criteria above. School assignments qualify for entry, but you need to specify your role in the project.


To be in with a chance of winning, submit your entry and a completed application form to Vicky Harris, CIWEM Publications Manager, on victoria.harris@ciwem.org with “UK Junior Water Prize” in the subject line.

This years deadline is 5pm on Monday 3rd February 2020.

Shortlisted projects will be judged on Friday 13th March 2020 in Birmingham.


For more information about the competition and what makes a great entry, have a look at our guidance documents.

Report guidance Judging criteria

Stockholm Junior Water Prize 20th Jubilee video

Previous Winners 

2019 Diana Virgovicova

This year’s UK Junior Water Prize was presented to Diana Virgovicova from Francis Holland School, for her discovery of a new photocatalyst to solve water pollution.

Read more about our 2019 winner of the UK Junior Water Prize here.

Diana did incredibly well in the Stockholm Junior Water Prize taking home a diploma of excellence as first runner up. Read more here.

2018 Krtin Kanna Nithiyanandam

With another, highly impressive project, Krtin also won the 2018 competition for his project titled “Employing Computer Vision and Cellulosic Biocomposites for Rapid, Automated and Cost-effective Water Analysis and Purification”.

2017 Krtin Kanna Nithiyanandam

Sixteen year old Krtin Kanna Nithiyanandam from Sutton Grammar School won the 2017 UK Junior Water Prize and recently traveled to Stockholm to compete at the international competition. Krtin’s project was entitled “A Novel, Photocatalytic, Lead-Sequestering Bioplastic for Sustainable Water Purification and Environmental Remediation”. His entry focuses on meeting global wastewater management challenges, exhibiting waste water as an opportunity rather than a waste product. Krtin was recently features in the TIME magazine ’30 Most Influential Teens of 2017′, to view the article in full please click here.

2016 Jennifer Rodgers and Anna Morris

Winners of the 2016 competition were Jennifer Rodgers and Anna Morris, both 16 from the Stephen Perse Foundation Senior School in Cambridge. They presented their project idea, ‘Flow – integrated water systems for the home’, which aims to re-purpose water that runs out of baths, showers and sinks as toilet water using sensors. Toilets typically use 30% of total household water, presenting an important opportunity for water reuse.

Following a week long exchange to Stockholm to take part in the SJWP competition, Anna and Jennifer were nominated for the first ever Children’s Climate Prize. Their video can be viewed here.

2015 Sebastian and Renatus Groothoff

Brothers Sebastian and Renatus Groothoff from Beech Grove School in Kent, emerged as the winners in 2015 for their project ‘Fish Out of Thin Air’. They designed a new aquaponic system to produce a sustainable source of fish protein. Sebastian and Renatus proposed that such a system could relieve pressure from the fishing industry, specifically fish farming, on the ocean ecosystem.

2014 ​Annabel Macklin

Annabel Macklin from The Thomas Hardye School in Dorchester. Her project looked to find a chemical solution to the annual €300m cost of sea lice infestation to the Atlantic salmon industry, and to explore the effects that these chemicals could have on the surrounding environment.

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