The iLembe District Municipality is the designated Water Services Authority (WSA) and is also a Water Services Provider (WSP) for areas not served by the water concession in the district (see article on page 2 concerning the Siza Water concession). Having a customer base of more than 60 000 households of various income levels and serving a large, varied geographic area, proves challenging for the district.
The main challenges faced by iLembe District Municipality in the water and sanitation sector have been identified as follows:
- Ageing Infrastructure and related funding requirements.
- High non-revenue water (NRW) levels resulting in additional production and distribution costs as well as lost revenues.
- Low productivity in terms of its operations and maintenance.
An appropriate, accurate Infrastructure asset register which is spatially enabled, where the data can be updated and maintained, was identified as key to addressing these challenges.
The iLembe District Municipality identified the need to improve systems, processes and operations to improve asset management in water and sanitation services and sourced assistance from the Vuthela iLembe LED Support Programme which developed terms of reference for procurement of an asset management information system during 2022.
The budget allowed for a system that would assist in operations, maintenance and planning for maintenance activities; facilitate job card management; and assist in addressing NRW management. The system must also have capacity for the use of mobile technologies to assist field workers with data management instead of relying on hard copies and manual data entries.
The EDAMS System
The EDAMS System is a comprehensive Utility Enterprise Management system covering all commercial and technical functions. It is integrated with the organisation’s financial, GIS, fixed asset management and Supervisory Control and Data Acquisition (SCADA) systems and provides a coherent enterprise system solution for the modern utility.
The EDAMS data model is structured in such a way that it constitutes the organisation’s technical (fixed) asset register and can further be used for all relevant applications such as mapping, maintenance, engineering analysis (modelling), demand management (e.g., NRW), asset valuation, rehabilitation planning and customer care, and provide summarised input to the financial asset register. It can also be used for the financial billing and revenue management of a utility.
The project will be implemented in five months and the software will be licensed and supported for a further 24 months. Work involves infrastructure data conversion and evaluation which includes a gap analysis and recommendations for improvement, system setup and configuration, and extensive training through workshops and formalised training courses. A proven methodology for success is followed by Hydro-Comp, ensuring quick and effective deployment with the client, in this case the iLembe District Municipality and its sector departments.
Data conversion: EDAMS’ powerful data conversion and structuring facilities make it easy to convert data from various sources and attach engineering intelligence to network data to improve engineering integrity. The EDAMS software includes extensive data models and element libraries for all the water and sanitation infrastructure assets and has built-in hierarchical structures to allow for inheritance and functional dependencies.
Network data analysis and evaluation: Data cleaning is streamlined and automated, with missing attribute data, connectivity or topological violations and suspect engineering zones highlighted as exceptions. The system ensures that the exceptions are classified intelligently to allow the user to focus on investigating critical problems.
Procedures will be put in place for properly maintaining the technical asset register and in interfacing with the financial asset register. Users will be trained on how to both convert data to the EDAMS software and maintain it, whether changes arise from in-house field work or contractor works.
Maintenance activities and resources deployed (human resources, vehicles and equipment, stores) will be defined and configured in the system. The system will enable complaints management (in the form of a call centre); scheduling, workflows, and business processes; work order management; scheduling of preventative, proactive and routine maintenance programmes; and analysis and management of maintenance records.
Operations and NRW management
The EDAMS operations module will provide users with the ability to manage readings/ instantaneous measurements and/or period logs taken from any asset. Instantaneous or period logs/ readings can be kept for assets in any fixed installation, i.e. bulk meters, pump station, treatment plant, etc. The collected data can include counter readings, operating times, energy consumption and user definable indicators such as temperature and pressure.
Amongst others, the system will enable the efficient monitoring and control of bulk meter operation for prompt response to problems; evaluation and verification of bulk meter readings; and flexible estimation of problematic meter readings. All the metering and financial billing information can then be used to provide the water balance in the International Water Association (IWA) format which is also the format adopted and required by the Department of Water and Sanitation from Water Services Authorities, such as the iLembe District Municipality.
The EDAMS NRW management module will manage water demand zones/ district metered areas (DMA) to reduce inefficiencies; ensure proper service delivery (water quantity and pressure); formulate water conservation plans with the main objective of reducing NRW; and ensure procedures and required reporting for compliance with regulations. Its main functions include real-time leak detection; water balancing per DMA; water audit per DMA and overall water scheme; and detailed leakage analysis.
The effectiveness of the system largely depends on the current zoning and bulk metering in the system. Utilities usually use the system to identify their shortcomings and continuously improve the status in the field for better control of the bulk operations and distribution to end users.
Asset valuation and rehabilitation planning
Three main functions are basically enabled as follows:
►The EDAMS condition assessment module handles various assets differently: (a) assets such as treatment plants and pump stations are inspected individually and evaluated on a regular basis; (b) network above ground assets such as hydrants, isolating valves and manholes are inspected individually and evaluated only if their age exceeds a certain number of years; and (c) water and sewer pipes are evaluated on a range of parameters, such as failure frequency, material, age, soil conditions and other.
►The EDAMS asset valuation module (a) determines the current price and maintenance (total cost) of ownership; (b) evaluates the remaining useful life of assets; and (c) evaluates the actual cost performance of the assets. In addition, the EDAMS asset valuation module exports summarised asset valuation information according to the utility’s accounting system requirements (following the Municipal Standard Chart of Accounts and National Treasury regulations in this case).
► The EDAMS rehabilitation planning model is a decision support tool for establishing infrastructure rehabilitation and investment plans. Functionality includes (a) importance and risk assessment; (b) asset categorisation; (c) assessment of useful lives; (d) rating and ranking assets; and (e) budgeting. The main output of the model is a preventive maintenance plan and a rehabilitation plan based on available budgets.
For the system to be fully effective, financial data must be provided regarding the purchase/ replacement value of assets, and condition assessment criteria and environmental data must be set up. Appropriate training and worked examples will be presented so that users can improve the results from the system as such data becomes available.
Field work management
The EDAMS field work management software can be deployed in the future by the iLembe District Municipality to further improve productivity. The software utilises industry-specific predefined templates to assist mobile field workers carry out (a) data capture, (b) asset condition assessment, (c) maintenance, and (d) recording of readings/ logs/ events. An illustration of the field work management various modules is shown below:
Hydro-Comp’s experience in asset management for water and sanitation
The EDAMS system is developed by EDAMS Technology, a division of Hydro-Comp. Hydro-Comp, though an international company active in over 20 countries, has its roots in South Africa, where it keeps offices in Sandton and Port Elizabeth. Hydro-Comp has extensive experience in implementing asset management solutions in the water and sanitation industry. Funding for projects carried out varies from simple internal funding to funding by donors, such as USAID, World Bank and GIZ (German). Currently there are more than 50 organisations using the EDAMS asset management software for water and sanitation with more than 1 000 power users. In South Africa, Nelson Mandela Bay Municipality, Silulumanzi and Siza Water make extensive use of the software.
Benefits realised include:
- An accurate technical asset register, well maintained and interfaced with the financial asset register
- More effective emergency and crisis management
- Effective proactive and preventive maintenance
- Improved productivity and efficiency in operations and maintenance
- Increased asset effective life
- Improved service delivery (pressures, quality, less breakdown time, response);
- Reduction of losses
- Higher organisation creditworthiness
- Enhanced compliance and transparency