RAND WATER ANNUAL REPORT 2023

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Coliminder as an Early Warning Sensor for the Online Monitoring of Drinking Water Microbial Water Quality • To perform a high-level investigation into the application value of early warning detection through the online monitoring of microbial water quality. To determine correlations in results between real-time early warning detection of microbial activity and those generated from traditional grab sample analyses under laboratory conditions. • Determine if changes in microbial water quality within the drinking water supply chain can be detected that ordinarily would not have been detected by the traditional microbial water quality monitoring methods. • To evaluate the correlation between results of reference laboratory method and the ColiMinder ® by means of a bench scale experiment. • The ColiMinder ® allowed for the detection of incidences and/or changes in processes and raw water. This real-time measurement of microbiological quality enabled rapid response and correction. • The ColiMinder ® served as an early warning signal for mechanical faults, or power outages that could lead to stagnation of pipeline water also giving early warnings that enable rapid action at the pumping station. • The ColiMinder ® offers fully automated rapid microbiological measurements of water quality, enabling the shift from a 2D to a 3D process control in all water related processes. This incorporation of the microbiological dimension of water quality into process control significantly increases efficiency and safety of water treatment processes across all industries. • Test a leak detection technology that is non-intrusive and non-disruptive to on-going operations of water supply and to ease this operational challenge. • Utilise satellite-based technology to detect leaks on a pre-selected portion of Rand Water network. • Assess the ability of the technology to detect leaks on a larger scale. • The acquisition of satellite technology illustrates Rand Water’s commitment to digital transformation that will assist in saving clean water. The use of satellite technology to detect leaks on drinking water pipelines was successful and combined with the patented algorithm, has confirmed the viability of this technology. • The technology enables fast detection of water leaks throughout the Rand Water supply network, on average up to 3 meters below any earth surface, regardless of the material of the water pipes. • Reduces water loss and increases operational efficiency. Uses innovative, and efficient methods of leak detection that are non-intrusive and non-disruptive to our on-going operations. • To determine the ease of converting an existing operating system/ plant at Rand Water into intelligent 3D and VR models as well as to explore the value-add of scanning technology, and supporting software systems, in assisting with the rapid model development (2D arrangement drawings can be easily obtained from 3D models). • To obtain an indicative cost, through this pilot project, of converting Rand Water treatment facilities into models. Use of Scanning Solutions to Develop 3D& VR Models on Water Treatment Assets Use of Satellite Technology to Detect Leaks on Drinking Water Pipelines

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