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Zerho Waterless Toilet

A viable solution to water supply- and sanitation problems in informal settlements

December 2020
Gallery Zerho Waterless Toilet 1
Gallery Zerho Waterless Toilet 1


The Zerho Toilet is proudly South African, where there are still more than 3 million people that do not have sanitation. On average one person produces 1000 litres of urine and 50kg of solid waste per year. Uncontained and not managed, human waste creates extensive negative environmental impacts on a daily basis.

With the Zerho, the faecal matter as well as the urine, are contained and offers the users a high level of hygiene. By not flushing, one person saves on average 7000 litres of potable water per year. When a dry toilet is designed and constructed in such a way that the faeces receptacle can be quickly and easily emptied with minimal risk to human health, the biggest operational and maintenance problem associated with these toilets will be obviated. When the excreta can also be productively and safely used for fertilizing crops and improving poor soils, the technology will become even more attractive. This is what the Zerho Toilet offers.

  • /
Label Date December 9, 2020
From South Africa
Maturity stage Prototype testing in the real world
Looking For Network, New clients, Funding, Partners

The environmental benefits

  • By not flushing, one person saves on average 7000 litres of potable water per year
  • + 90% increased lifetime (20 to 50 years) compared to mainstream alternative

The Financial benefits

  • For every $1 invested, a ROI of $5 is gained in healthcare and other factors
  • The Zerho is 5x more affordable than sewers - demonstrating that safe sanitation can be done at a much lower cost

Activity Region

  • /


South Africa,

  • Headquarters
  • Activity

Company Profile

Zerho Waste Management (Pty) Ltd

The Zerho Waterless Dehydrating Toilet is sludge-free; safely containing solid human waste until dry and pathogen-free.

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Headquarters Centurion, 0061, South Africa

Networking Partner


Waterpreneurs is a global “for-impact organisation”, supporting the scaling-up of impact investments financing the growth of WASH enterprises operating in developing countries, and respecting human rights. Waterpreneurs brings extensive knowledge of the water and sanitation entrepreneurial sector, impact investing and facilitation of marketplaces.

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Solutions Associated 30
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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 Zerho Waste Management (Pty) Ltd 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.