Around the world, 785 million people lack access to safe water and children are amongst the most affected by the threats linked to a lack of safe water, sanitation and hygiene services. While these diseases are preventable, every 90 seconds, a child dies from a water-related disease.

With a mission to improve access to safe drinking water and thus reduce the prevalence of waterborne diseases, Austrian social enterprise Helioz has been selected by Expo 2020 Dubai’s Global Best Practice Programme for its WADI UV-measurement device. WADI is designed to measure the rate of solar water disinfection – when water in a PET bottle is treated by exposing it to the sun’s UV rays. By simply showing a smiling face, the device indicates when the water has been sufficiently disinfected.

Solar powered and with a lifespan of two years, WADI produces no waste and offers a cost-effective solution to water disinfection. The solution also contributes to a reduction in CO2 emissions by reducing the need to burn firewood in order to boil water for disinfection. The use of WADI has already resulted in 108,736 people having access to clean water and 44,000 tonnes of CO2 reduction.

With the power of the sun and help of the Global Best Practice Programme, Helioz will be able to increase the availability of safe drinking water and decrease avoidable diseases across the world.

The Expo 2020 Dubai Innovation Series is a weekly blog series highlighting some of the creative and world-changing innovations that are being showcased via Expo 2020 Dubai’s programmes and pavilions.

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