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A solar-powered UV measurement device that visualizes the process of solar water disinfection

October 2020


A solar-powered UV measurement device that visualizes the process of solar water disinfection

  • World Alliance Member
  • Featured Solution
  • Labelled Solution
Label Date October 19, 2020
From Austria
Maturity stage TRL 9 / CRI 3-4 - Commercial Scale Up / Multiple commercial Applications

According to the World Health Organization (WHO) 663 million people still lack access to drinking water sources that are protected from external contamination. The absence of proper water disinfection triggers health and environmental issues that translate into worldwide economic problems. People in rural areas of Least Developed Countries (LDCs) are the most affected and have poor access to safe drinking water. The currently available methods in a household to disinfect water are expensive and have associated health and environmental problems such as toxicity, CO2 emissions, and deforestation. WADI allows households to obtain safe drinking water through a solar disinfection process. It is an external device that indicates the progress of the disinfection process of the water. Therefore it can be used with any PET or UVpermeable glass bottles.

The Environmental Benefits

  • Measures the UV radiations from the Sun
  • No need of batteries
  • Save 1-3t of CO2 emissions per household per year

The Financial Benefits

  • Reduction in firewood leads to annual savings of up to 56USD per household
  • Increased workdays (up to 60%) due to lower disease rate

Target client profile


Activity Region

  • Headquarters
  • Activity

Company Profile


HELIOZ is an Austrian Social Enterprise active in the field of water disinfection and development of climate projects.

Headquarters 1010 Vienna, Austria
Type Company
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Networking Partner

EIB Institute

The EIB Institute was set up within the EIB Group (European Investment Bank and European Investment Fund) to promote and support social, cultural, and academic initiatives with European stakeholders and the public at large. It is a key pillar of the EIB Group’s community and citizenship engagement.

Solutions Associated 22
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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator HELIOZ has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.