Australian Stockholm Junior Water Prize - Previous Recipients

2019 Winner: Macinley Butson, The Illawarra Grammar School, New South Wales

The SODIS Sticker: Development and testing of a Film based detector system for appropriate Ultraviolet Solar Disinfection (SODIS) of Water

Macinley has developed the SODIS sticker, an innovative ultraviolet radiation sticker which accurately measures the solar UV exposure required to sanitise drinking water. This is done through a high accuracy transparent UV-sensitive film coupled with a partially UV blocking filter, which allows the SODIS sticker to measure direct UV exposure from the sun and reflected UV from other objects. At just over one cent to produce, it is also a cost-effective and safe way of purifying drinking water for developing communities

Following Macinley winning the Australian Stockholm Junior Water Prize in May 2019, she went on to take home the International Stockholm Junior Water Prize in August 2019. The Prize was presented to Macinley by HRH Crown Princess Victoria of Sweden. Read more here about Macinley's win in Stockholm

View our 2019 Finalist Video Pitches

2018 Winner: Minh Nga Nguyen, Sydney Girls High School, New South Wales

Recycling Waste into Biochar: A Sustainable Wastewater Filter and Fertiliser for the Agricultural Industry 

Minh Nga Nguyen, Sydney Girls High School (NSW)
Nga’s project is entitled “Recycling Waste into Biochar”, a sustainable waste water filter and fertilizer for the agricultural industry. Her project formed a model of application in which agricultural plant wastes are recycled into a multipurpose biochar charcoal, that can filter wastewater and fertilise plants. Nga found that bamboo biochar filter packs could remove 45.6% of harmful pollutants in wastewater, lowering pollutant content to meeting Australian guidelines. Her findings have the potential for application in the agricultural industry, allowing farmers to recover polluting plant wastes and turn it into biochar used to treat livestock wastewater, as well as aid crop growth.

View Nga's poster
Australian Stockholm Junior Water Prize 2018 Poster

2017 Winner: Macinley Butson, The Illawarra Grammar School, New South Wales

Macinley’s project involved the design and testing of a simple and affordable mechanical device to help solve the problems of clean water and power for people in developing communities. The Solar System, which produces solar energy, provides a supply of clean potable water for personal use as well as a sterile water supply for medical use. Macinley’s invention has the potential to help many people around the world as it can increase green energy power generation by over 70% per day and supply clean water daily.

Read more about Macinley's wining project 

View Macinley's poster

The Australian Stockholm Junior Water Prize was awarded at Ozwater’17 in Sydney. Watch the video below and hear what Macinley said about winning the award:

In our second video Macinley shares with us her Australian Stockholm Junior Water Prize experience:

Mohamed Jakaria, Queensland Academies Health Science Campus, Southport, Queensland

Mohamed’s investigation examined the efficiency of Elodea canadensis in removing nitrate in effluent discharged from wastewater treatment plants. This was explored by answering the research question: What is the effect of increasing surface area of Elodea canadensis on the assimilation of nitrate in effluent discharged from Beenleigh wastewater treatment plant? This autotrophic aquatic plant’s ability to use inorganic nitrogen for growth provides an ecologically friendly solution to the tertiary treatment of wastewater.

Click here to read more about Mohamed's wining project

Click here to view Mohamed's poster

The Australian Stockholm Junior Water Prize was awarded at Ozwater’16 in Melbourne. Watch the video below and hear what Mohamed said at the awards ceremony:


William Tsai, Queensland Academy for Health Sciences  

The effect of nitrate levels on the growth of Anabaena Circinalis

Click here to read more about William's wining project

Click here to view William's poster



Lewis Nitschinsk

An investigation into the optimal reclamation point of phosphate from an industrial wastewater treatment facility through chemical precipitation using Calcium Chloride.



Declan Fahey, Hellyer College 

Facing the Reality of Groundwater Salinity.



I-Ji Jung, Queensland Academy for Health Sciences  

Polymer Power: The extraction of divalent heavy metal ions from aqueous solutions using sodium polyacrylate and its potential use to treat heavy metal contaminated waterways in Queensland, Australia.



Muthuja Bavanendrakumar, Queensland Academy for Health Sciences

Eutrophication of Waterways from Golf Corse Runoff 



Stephanie Reed, Mudgee High School

Artificial Wetlands: Recycling Household Grey Water.



Storm Holwill, Marist Regional College 

In the Name of Freshwater – An investigation into the capacity of marine environments to cultivate the microalgae Dunaliella tertiolecta to sequester atmospheric and industrial carbon dioxide and produce plant bio-mass for bio-fuel production without the use of fresh water.


Dayffyd and Gwylim Klippel-Cooper , Glenunga International High School

Water Filtration utilizing Sea Shells.

Robbie Bishop-Taylor, Great Lakes College

The Identification of Critical Salinity Thresholds for Upper Estuarine Plants



Linda Van and Alex De Sousa, St James College 
The Sustainability of the Brisbane River for Recreation and Commercial Use


Andrew Stewart, Karabar Distance Education Centre

Multi-tiered Wetlands – A New Technique for Improving the Efficiency of Artificial Wetlands

Nilmini Wijemunige, Somerville House

Water Treatment with Free-floating Aquatic Plants



Andrew McLeod, North Sydney Boys High School 

 Improving Water Quality with Terrestrial Plants


Andrew Shaw and Nathan Sawyer, Newton Moore College 

Breeding and Releasing the Native Western Pygmy Perch



Neil Robinson and Stuart Fearon, Newton Moore College 

Habitat restoration and its impact on frog populations


Jonathon Duniam, Marist Regional College 

Habitat Assessment for the Burnie Burrowing Crayfish (Engaeus yabbimunna) on Shorewell Creek, Burnie, Tasmania