Securing a Reliable Water Supply for a Leading Educational Institution

Between November 2023 and March 2024, St John’s College partnered with Marlin Technologies Group (MTG) to develop a sustainable water treatment solution capable of meeting the daily water requirements of both the school and boarding facilities.

The objective was to maximise the use of available borehole water, reduce dependence on municipal supply, and provide a consistent source of high-quality potable water that complies with SANS 241 drinking water standards.

Following a detailed assessment of the site’s water quality and operational requirements, MTG designed and installed a fully automated treatment plant tailored to the College’s needs.

About the Water Treatment System

The treatment system was engineered based on comprehensive water analysis and borehole production capacity to ensure reliable treatment performance and long-term operational efficiency.

System Features

• Hydrogen peroxide dosing for oxidation and water conditioning
• Multi-stage media filtration for effective removal of suspended solids and impurities
• Micron filtration for enhanced water polishing
• Water softening system to reduce hardness and protect infrastructure
• Chlorination system for disinfection and bacteria control
• UV sterilisation for additional microbiological protection
• Fully automated control and monitoring system

As part of the project, MTG also delivered the supporting infrastructure required for successful operation, including:

• Civil works and site preparation
• Installation of a prefabricated treatment plant housing unit
• Three 52,000-litre reservoir storage tanks, providing a combined storage capacity of 156,000 litres

To ensure long-term reliability and compliance, MTG provides ongoing monthly water quality testing and monitoring.

In addition, MTG conducted comprehensive training for the College’s maintenance team, equipping staff with the knowledge and skills required to operate and maintain the system effectively.

Results & Benefits

Reduced Reliance on Municipal Water

The College now maximises the use of treated borehole water, significantly reducing dependence on municipal water supplies and improving water security across the campus.

Safe, High-Quality Drinking Water

The treatment plant consistently produces water that meets SANS 241 potable water standards, ensuring safe and reliable water for learners, staff, and boarding facilities.

Improved Operational Efficiency

The fully automated system reduces manual intervention, enhances reliability, and ensures consistent treatment performance.

Enhanced Water Security

With over 100,000 litres of treated water storage capacity, the College has increased resilience against municipal disruptions and periods of peak demand.

Rapid Return on Investment

By reducing municipal water consumption and making better use of available groundwater resources, the project is expected to achieve a return on investment within approximately 24 months.

Investing in a Sustainable Future

The St John’s College Water Treatment Project demonstrates how innovative water management solutions can provide long-term operational, environmental, and financial benefits.

Through advanced treatment technology, automation, staff training, and ongoing support, MTG has helped the College establish a dependable and sustainable water supply for future generations.