We are for water for life.​
As an on-site sanitation solutions company our core business is the provision of solutions to treat wastewater safely and effectively, for re-using purposes or to replenish aquifers. We protect a precious, life-giving resource and further advance water security in order to help safeguard the well-being of individuals, their communities, and the environment.
Ownership
In 2019, JoJo Tanks recognised the synergy that Calcamite offered to its mandate to transform into a water solutions company. Calcamite was subsequently acquired by JoJo Tanks. The manufacturing facility in Klerksoord, on the outskirts of Rosslyn, has been retained, while common corporate functions are being merged with JoJo. This integration ensures that the JoJo values are woven into the Calcamite business and brand.
Our Team
Meet the people behind Calcamite — a team of engineers, specialists, and problem-solvers committed to delivering sustainable wastewater solutions that protect our environment and support communities across South Africa.
B.Eng (Civil), M.Eng (Civil), B.Com
Chief Executive Officer
With over 30 years of experience in civil engineering and executive leadership. He has held senior roles across the construction materials industry and serves as CEO of Calcamite and Managing Director of JoJo Tanks.
B.Eng (Civil), MSc Eng
Chief Operating Officer
With 30 years of experience in civil engineering, Sebasti’s background includes structural engineering, materials engineering, and wastewater treatment.
Muvhusi Mugeri
B.Eng (Mech)
Engineer
Muvhusi has 5 years of experience in mechanical engineering, spanning the mining industry, FMCG industry, and wastewater treatment industry.
Tafirei Muzenda
B.Sc. Hons (Mech), MSc Eng
Production Manager
Muzenda brings around 20 years of experience in roto engineering, production, maintenance, project management, and fabrication, with exposure to municipal, mining, and manufacturing sectors.
Quinton Palm
Key Account Manager
With over 20 years of experience in procurement and sales across the mining and water sectors, Quinton is responsible for client proposals, site visits, plant testing, and after-sales support.
Bennie du Plessis
Key Account Manager
Bennie brings 20 years of sales experience, including 7 years in the wastewater treatment industry, where he is involved in client relations, project support, and solution delivery.
Ephraim Phasha
HCert (Physical Sciences),
HCert in Water Treatment (ongoing)
Key Account Manager
With over 12 years of experience, Ephraim has built expertise in sales, client management, bid coordination, and business development across a range of leadership and customer-facing roles.
Louise Becker
Admin Manager
With over 30 years of administrative experience, Louise has worked across
the mining, property development, and financial sectors.
Anthaya Dibakoane
B.Eng (Civil), M.Eng (Civil), B.Com
Wastewater Technician
Anthaya is involved in wastewater operations and laboratory support, contributing to the efficient monitoring and performance of treatment systems.
Andile Mtsweni
N.Dip. (Chemical Eng.)
Professional Process Controller
With nearly 20 years of experience, Andile is a WISA-registered Process Controller with expertise in synthetic diamond manufacturing, gas production, wastewater treatment, and water backup system installations.
Roto-moulding Capabilities
Calcamite stands alone as the only packaged wastewater treatment company possessing in-house expertise to roto-mould larger containers specifically designed for various sewage treatment applications.
The Process
Roto-moulding is a specialised production technique where a heated mould filled with plastic powder is used to create large plastic parts. By heating and slowly rotating the mould both vertically and horizontally, the resin is evenly distributed and fused to the inner surfaces of the mould.
These roto-moulded components are manufactured exclusively for Calcamite’s on-site wastewater treatment plants of different sizes. Assembled in Rosslyn, Pretoria, the only outsourced components are pumps, blowers, and Bio-reactor media, all sourced from local distributors.
The Material
Calcamite’s roto-moulded components are crafted from the highest quality LLDPE (linear low-density polyethylene), locally sourced from Sasol. This ensures the integrity and durability of our products.
The Benefits
Seamless Construction:
Our roto-moulding process produces watertight containers that are robust and corrosion-resistant, essential for preventing harmful sewage spillages.
Customisation:
Additional plastic can be added in high-stress areas to prevent buckling under water or soil pressure.
Cost-Effective:
When compared to conventional 
construction methods and imported alternatives, roto-moulding is a quick and cost-efficient production method.
Pan-African Reach:
Our unique capabilities enable us to service projects throughout Africa, 
extending our impact and commitment to water treatment solutions.
Technology & Implementation Partners
We partner with trusted technology providers and implementation specialists to deliver reliable, high-quality solutions.
Warranties and Guarantees
Engineering Solutions with Integrity: An Investment in Quality, Innovation, and Sustainability.
With a proven track record spanning over 40 years, we stand behind the quality and durability of our products.
Our Warranty Promise:
10-Year Warranty:
We offer a 10-year warranty on our roto-moulded products and components, reflecting our confidence in their longevity and performance. Our below ground polymer tanks have an expected life in excess of 25 years.
Warranty Activation
To ensure that our products and plants operate within their parameters, and are in accordance with our specifications, we require product warranties to be registered before they are activated. Failure to activate product warranties will render the warranties null and void.
Manufacturers’ Warranties: All mechanical and electrical components included in our solutions are covered by applicable manufacturers’ warranties, guaranteeing their quality and functionality.
Compliance and Environmental Responsibility:
When operated within design parameters and regularly maintained, the effluent from our wastewater treatment plants will meet or exceed the general authorization limits standard of the National Water Act 36 of 1998.
Calcamite’s warranties and guarantees are more than just promises; they are a testament to our long-term
dedication to quality, innovation, and sustainability.
