Member - Zerho Waste Management (Pty) Ltd

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

Type Startup or self-employed
Founded 2003
Company Size 1
Member Type
Founders CL Harris
Headquarters Centurion, 0061, South Africa
Social network
Zerho Waste Management (Pty) Ltd


The Zerho Waterless Toilet is a once-off, cost-effective, robust, eco-sanitary product that would serve to replace the Rudimentary Sanitation (traditional pits, VIP- and chemical bucket latrines) used throughout South Africa. It is designed for a family of less than ten users per day. The Zerho is fit-for-purpose in Rural, Peri-Urban, Construction and Emergency applications. The Zerho Toilet has several elements that sets it aside from other products on the market. These include: • The Zerho waterless toilet is a small-dimension (160cm diameter x 90cm), off-grid toilet system which enables fast installation and relocation when necessary – saving on time, infrastructure and labour costs. • The Zerho waterless toilet system uses no water, additives or chemicals. With a Urine Diversion toilet pan, there is no faecal sludge. • The Zerho waterless toilet system is robust and user-friendly and has a potential lifespan of more than 20 years. • Very little maintenance on the unit itself is needed due to the robust design. • Odours and moisture are disposed of by effective air circulation and solar heat onto the unit; drawing fresh air from the indoor toilet seat section and effectively disposing of odours and moisture via the vent pipe. The Zerho Toilet has not been tested outside of South Africa - therefore not tested in freezing temperatures. However, no additives or special steps would be used here either. Ambient temperatures will always impact the desiccation time; and the (non-sludge) solid waste is always safely contained. This makes for easy removal and transport when necessary. The Zerho Implementation Plan incorporates the support of the following Sustainable Development Goals in project communities: SDG 6 - Clean Water and Sanitation - Mitigating further contamination of underground water sources by traditional pit latrines and open defecation. The Zerho Toilet offers heightened personal hygiene in a home. SDG 9 - Industry - Local assembly of the Zerho in the project community; and development of related business activities. SDG 11 - Sustainability in the Community - Using the Cooperative Principles for development, governance and long-term planning. SDG 12 - Production & Consumption - Food Security; Agriculture using humanure in soil regeneration.
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Headquarters Centurion, 0061, South Africa

SDG’s of application

The Sustainable Development Goals are a call to action to end poverty, protect the planet and ensure peace and prosperity everywhere.
Clean water and sanitation
SDG 6 icon
Affordable and clean energy
SDG 7 icon
Industry, innovation and infrastructure
SDG 9 icon
SDG 11
Sustainable cities and communities
SDG 11 icon
SDG 12
Responsible consumption and production
SDG 12 icon

Efficient Solutions

Labelled Solutions from Zerho Waste Management (Pty) Ltd

The Solar Impulse Efficient Solution label seeks to bridge the gap between ecology and economy, bringing together protection of the environment and financial viability to show that these solutions are not expensive fixes to problems, but rather opportunities for clean economic growth.

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. To validate the Membership to the World Alliance for Efficient Solutions, the Solar Impulse Foundation only verifies that each entity is registered and has signed our principles and values stated in the following World Alliance for Efficient Solutions charter. For those Members who are also solution providers, 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.