Helioz is a Social Enterprise engaged in R&D and sale of affordable products for households in low-income countries.Helioz R&D is a Red Herring Top 100 Research and Development company, which invents products for the next decades. First product is WADI - an inexpensive and easy to use water disinfection. The WADI is a solar powered UV-measurement device that serves as an indicator for the process of solar water disinfection. The WADI has been tested by the WHO and meets its guidelines for drinking water quality. It provides households, schools and communities in the global south with one of the most cost-effective ways to enjoy access to safe water for many years to come, using nothing other than WADI and the power of the sun. WADI is a sustainable solution which traces the progress of water disinfection in a PET bottle. WADI works maintenance free for at least 5 years and costs less than 10 dollar.By doing so, HELIOZ intends to improve the quality of these families’ daily lives and of the health care systems in their respective countries. HELIOZ makes use of green technology to create products which greatly enhance the quality of life, both in developing and industrial countries.