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Importance of water loss control and different improvements measures implementation was recognized as one of key issues for public water sector EU funding projects in Croatia. Projects overview presented where financed by government agency Croatian waters and we believe this approach can be good example for others in our region. All measure for improvements are based on IWA methodology ; PIs, DMAs, PMAs, ALC. First stage in development of applications for EU funding opportunities is creation of the document “Water Loss Management Program” with following main elements involved: 1.Technical information system – implementation of GIS with input of all available relevant data about the water distribution system (pipes, equipment, consumers). This stage of the project was foundation for further activities ; modeling distribution system, statistics, testing and designing DMAs, pressure management solution. Important to emphasize is that water utility gets fully integrated GIS tools for future independent activities. 2. Establishing connection between Business information system (consumers, billing) and Technical information system – this stage was needed to create IT conditions that will allow further more detailed modelling capabilities and for future monitoring of DMAs including consumption 3. Leaks and maintenance statistics – implementation of data input for detailed analysis and PI evaluation 4. Connecting Technical information system (GIS) with hydraulic model (EPANET) – establishing long term stability in monitoring existing system and planning further changes and extensions of the distribution network 5. Modelling and calibrating hydraulic- mathematic model of the distribution system – establishing confident conditions for testing of future network working conditions with numerous DMAs and PMAs 6. Testing accuracy of analyses in few selected Pilot DMAs 7. Definitions of future water distribution system control and monitoring – definition of DMAs and PMAs, measuring and control locations, chambers, equipment, remote monitoring, pressure control 8. Establishing water loss control system – defining set of measures and activities needed for regular and continuous active leakage control and system monitoring 9. Education and training of water utility personnel considering new tools and knowledge needed in future activities. After completion of the first stage as described above, next stage involves creation of the Feasibility Study and then project can be applied for EU funding. Important to mention is that part of the projects implemented was also purchase of necessary mobile equipment for measurements (flow and pressure) and leak detection. With this equipment, implemented GIS, defined DMAs and gained knowledge, water utility companies already have foundations for immediate autonomous activities. |
