WADI. Affordable water disinfection for the poor.

Vienna, Vienna




HELIOZ is a social enterprise based in Vienna and develops products with the potential to revolutionize the way clean water is obtained. Its aim is to support people from the bottom of the pyramid and to treat them as customers and not as beggars to ensure a sustainable support.

HELIOZ developed WADI, an innovative product for water disinfection. WADI is a solar powered UV-measurement device which is placed next to PET-bottles filled with contaminated water. It serves as an indicator for solar water disinfection. When a happy smiley face appears on the WADI, then the point is reached at which solar UV-radiation has made the water in the PET-bottles safe to drink.

As a social enterprise we were longing for a third party certification which emphasizes our objectives and our transparency. We are thrilled to be part of a global movement, especially in combination with set standards and a professional environment.

The Change We Seek®

HELIOZ goal is to improve health standards and to reduce death rates and infant mortality caused by waterborne diseases by facilitating access to safe water in rural low-income households.

Worldwide, there are still 660 million people without access to an improved drinking water source. Over 50% of all hospital beds in developing countries are occupied by people suffering from waterborne diseases such as diarrhea, cholera and typhus. Diarrhea kills more children than AIDS, malaria and measles combined.

WADI was developed to provide a cost-effective and sustainable solution to improve the situation for the most vulnerable population. Additionally to the functional and practical qualities of WADI, its distribution also strengthens the economic basis of rural communities through local entrepreneurship programs. Households can generate income by selling disinfected water to other families within their area. This way, not only awareness about contaminated water will spread, but also economic growth can be generated.

What makes us a better company?

B Impact Report

Certified since: 

October 2016

Company Score

Median Score*



The Environment section of the Assessment evaluates a company's environmental performance through its facilities; materials, resource, and energy use; and emissions. Where applicable, it also considers a company's transportation/distribution channels and environmental impact of its supply chain. This section also measures whether a company's products or services are designed to solve an environmental issue, including products that aid in the provision of renewable energy, conserve resources, reduce waste, promote land/wildlife conservation, prevent toxic/hazardous substance or pollution, or educate, measure, or consult to solve environmental problems.



The Worker section of the survey assesses the company's relationship with its workforce. This section measures how the company treats its workers through compensation, benefits, training, and ownership opportunities provided to workers. It also focuses on the overall work environment within the company through management/worker communication, job flexibility and corporate culture, and worker health and safety practices.



The Customers section of the Assessment measures the impact a company has on its customers. The section focuses on whether a company sells products or services that promote public benefit, and if those products/services are targeted towards serving underserved populations. Questions in this section will measure whether a company's product or service is designed to solve a social or environmental issue (e.g. improves health, preserves environment or creates economic opportunity to individuals or communities, promotes the arts/sciences, or increases the flow of capital to purpose-driven enterprises).



The Community section of the survey assesses a company's impact on its community. The Community section evaluates a company's supplier relations, diversity, and involvement in the local community. The section also measures the company's practices and policies around community service and charitable giving. In addition, this section includes if a company's product or service is designed to solve a social issue, including access to basic services, health, education, economic opportunity, arts, and increasing the flow of capital to purpose-driven enterprises.



The Governance section of the Assessment evaluates a company's accountability and transparency. The section focuses on the company's mission, stakeholder engagement, and overall transparency of the company's practices and policies.

Overall B Score

80 out of 200 is eligible for certification

*Of all businesses that have completed the B Impact Assessment

*Median scores will not add up to overall

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