{"id":5303,"date":"2026-03-05T00:41:50","date_gmt":"2026-03-05T00:41:50","guid":{"rendered":"http:\/\/dwi.dk\/?page_id=5303"},"modified":"2026-03-05T00:43:36","modified_gmt":"2026-03-05T00:43:36","slug":"strategi-for-reduktion-af-nrw-2","status":"publish","type":"page","link":"https:\/\/dwi.dk\/en\/strategi-for-reduktion-af-nrw-2\/","title":{"rendered":"Strategy for reducing NRW"},"content":{"rendered":"
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How do you reduce water loss in a water supply? \n<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Water loss \u2013 often measured as <\/span>NRW (Non-Revenue Water)<\/b> \u2013 is one of the biggest challenges in modern water supplies. Even small leaks can lead to large losses of water, energy and resources over time.\u00a0<\/span><\/p>

Effectively reducing water loss is not just about finding individual leaks. It requires a systematic understanding of the entire plumbing network.\u00a0<\/span><\/p>

You don't reduce water loss by finding leaks.<\/b>\u00a0<\/span><\/p>

You can reduce water loss by understanding your water network.<\/b>\u00a0<\/span><\/p>

At DWI, we work with a practical and data-driven approach to reducing water loss, combining measurements, analysis and experience from the field. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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What is water loss (NRW)? <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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NRW covers the water that is produced but not registered as consumption.\u00a0<\/span><\/p>

This may be due to, among other things:\u00a0<\/span><\/p>

  • leaks in wiring\u00a0<\/span><\/li>
  • hidden fractures\u00a0<\/span><\/li>
  • errors in installations\u00a0<\/span><\/li>
  • measurement error\u00a0<\/span><\/li>
  • unregistered consumption.\u00a0<\/span><\/li><\/ul>

    In many supplies, water loss occurs gradually and without obvious signs.\u00a0<\/span><\/p>

    Therefore, modern water supplies work systematically with <\/span>water loss management<\/b>. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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    Water loss occurs as patterns <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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    Water loss rarely occurs as a single event.\u00a0<\/span><\/p>

    It occurs as small changes in a network over time.\u00a0<\/span><\/p>

    Therefore, effective reduction of NRW requires:\u00a0<\/span><\/p>

    • measurements\u00a0<\/span><\/li>
    • analysis\u00a0<\/span><\/li>
    • systematic effort.\u00a0<\/span><\/li><\/ul>

      When these three elements are combined, the work becomes much more efficient. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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      A practical model for reducing water loss <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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      The work on water loss can be understood as a coherent process:\u00a0<\/span><\/p>

      Installations in wiring networks\u00a0<\/span><\/p>

      \u2193\u00a0<\/span><\/p>

      Measurements and monitoring\u00a0<\/span><\/p>

      \u2193\u00a0<\/span><\/p>

      Data analysis\u00a0<\/span><\/p>

      \u2193\u00a0<\/span><\/p>

      Targeted leak detection\u00a0<\/span><\/p>

      \u2193\u00a0<\/span><\/p>

      Repair and improvements\u00a0<\/span><\/p>

      \u2193\u00a0<\/span><\/p>

      Lower water loss\u00a0<\/span><\/p>

      When the entire chain is functioning, water loss can be significantly reduced. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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      1. Understanding water balance\u00a0<\/b><\/li><\/ol>

        The first step in working with water loss is to understand the water balance.\u00a0<\/span><\/p>

        This includes, among other things:\u00a0<\/span><\/p>

        • produced water\u00a0<\/span><\/li>
        • registered consumption\u00a0<\/span><\/li>
        • unregistered water.\u00a0<\/span><\/li><\/ul>

          By analyzing the difference, the utility can assess the extent of water loss.\u00a0<\/span><\/p>

          \u00a0<\/span><\/p>

          1. Divide the wiring network into zones\u00a0<\/b><\/li><\/ol>

            Many water utilities divide the network into <\/span>DMAs (District Metered Areas)<\/b>.\u00a0<\/span><\/p>

            This makes it possible to:\u00a0<\/span><\/p>

            • analyze night consumption\u00a0<\/span><\/li>
            • identify abnormal patterns\u00a0<\/span><\/li>
            • demarcate areas with leaks.\u00a0<\/span><\/li><\/ul>

              Zoning is often an important step in the work on NRW reduction.\u00a0<\/span><\/p>

              \u00a0<\/span><\/p>

              1. Measure what is happening on the network\u00a0<\/b><\/li><\/ol>

                Measurements provide insight into how the wiring network behaves.\u00a0<\/span><\/p>

                This can happen, among other things, with:\u00a0<\/span><\/p>

                • flow measurements\u00a0<\/span><\/li>
                • pressure measurements\u00a0<\/span><\/li>
                • data loggers\u00a0<\/span><\/li>
                • leak logger systems.\u00a0<\/span><\/li><\/ul>

                  Permanent monitoring makes it possible to detect changes early.\u00a0<\/span><\/p>

                  \u00a0<\/span><\/p>

                  1. Find leaks systematically\u00a0<\/b><\/li><\/ol>

                    When data indicates problems, targeted leak detection can be carried out.\u00a0<\/span><\/p>

                    It may include:\u00a0<\/span><\/p>

                    • acoustic leak detection\u00a0<\/span><\/li>
                    • correlation measurements\u00a0<\/span><\/li>
                    • trace gas\u00a0<\/span><\/li>
                    • analysis of noise patterns.\u00a0<\/span><\/li><\/ul>

                      By working systematically, hidden leaks can be precisely located.\u00a0<\/span><\/p>

                      \u00a0<\/span><\/p>

                      1. Use data to prioritize\u00a0<\/b><\/li><\/ol>

                        Data from loggers, sensors and analyses can be used to prioritize efforts.\u00a0<\/span><\/p>

                        Modern tools \u2013 including machine learning \u2013 can help to:\u00a0<\/span><\/p>

                        • identify changes in the network\u00a0<\/span><\/li>
                        • detect potential leaks\u00a0<\/span><\/li>
                        • prioritize investigations.\u00a0<\/span><\/li><\/ul>

                          This provides a better basis for decision-making for operations and investments.\u00a0<\/span><\/p>

                          \u00a0<\/span><\/p>

                          1. Repair and improve the network\u00a0<\/b><\/li><\/ol>

                            When leaks are identified, they can be repaired and documented.\u00a0<\/span><\/p>

                            At the same time, data can be used to:\u00a0<\/span><\/p>

                            • prioritize wiring replacement\u00a0<\/span><\/li>
                            • plan maintenance\u00a0<\/span><\/li>
                            • improve the network structure.\u00a0<\/span><\/li><\/ul>

                              Over time, this can significantly reduce water loss. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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                              Water loss, energy and climate \n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                              Reducing water loss is not just about operations. It is also about energy, climate and responsible use of water resources.\u00a0<\/span><\/p>

                              Less water loss means, among other things:\u00a0<\/span><\/p>

                              • lower energy consumption\u00a0<\/span><\/li>
                              • less strain on waterworks\u00a0<\/span><\/li>
                              • better resource utilization\u00a0<\/span><\/li>
                              • higher security of supply.\u00a0<\/span><\/li><\/ul>

                                Therefore, water loss management is increasingly included in strategic plans for water supplies. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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                                International targets for water loss <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                                Water loss is a global focus area.\u00a0<\/span><\/p>

                                Many European water supplies are currently working towards levels below <\/span>15 % North Rhine-Westphalia<\/span>.\u00a0<\/span><\/p>

                                \u00a0<\/p>

                                Reaching these levels typically requires a combination of technology, operational experience and long-term planning. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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                                Installations are the foundation \n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                                Technology can only work if the installations in the wiring network do.\u00a0<\/span><\/p>

                                Valves, stopcocks, covers and correct registration in GIS are essential for both leak detection and data loggers.\u00a0<\/span><\/p>

                                At DWI, we work from a simple experience:\u00a0<\/span><\/p>

                                In water supply, data only works if the installations do. The entire chain \u2013 from valve to cover to advanced data processing \u2013 must work.<\/b> <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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                                From technology to action <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                                Effective reduction of water loss requires interaction between several elements:\u00a0<\/span><\/p>

                                • leak detection in the field\u00a0<\/span><\/li>
                                • monitoring with data loggers\u00a0<\/span><\/li>
                                • analysis of data\u00a0<\/span><\/li>
                                • advice on wiring networks\u00a0<\/span><\/li>
                                • strategic planning.\u00a0<\/span><\/li><\/ul>

                                  When these elements work together, the effort becomes much more effective. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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                                  Would you like to work more systematically with water loss? <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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                                  At DWI, we work daily with leak detection, monitoring of pipe networks and analysis of water data.\u00a0<\/span><\/p>

                                  You can read more about:\u00a0<\/span><\/p>

                                  • leak detection in water supplies\u00a0<\/span><\/li>
                                  • data loggers and monitoring\u00a0<\/span><\/li>
                                  • HydrantAI analysis\u00a0<\/span><\/li>
                                  • consulting on wiring networks.\u00a0<\/span><\/li><\/ul>

                                    Or contact us for a professional dialogue about your water supply network. <\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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                                    How do you reduce water loss in a water supply? Water loss \u2013 often measured as NRW (Non-Revenue Water) \u2013 is one of the biggest challenges in modern water supplies. Even small leaks can lead to large losses of water, energy and resources over time. Effective reduction of water loss is not just about finding individual leaks. It requires a systematic understanding of the entire water network. You do not reduce water loss by finding leaks. You reduce water loss by understanding your water network. At DWI, we work with a practical and data-driven approach to reducing water loss, combining measurements, analysis and experience from the field. What is water loss (NRW)? NRW covers the water that is produced but not registered as consumption. This can be due to, among other things: leaks in the water network hidden breaks errors in installations measurement errors unregistered consumption. In many supplies, water loss occurs gradually and without clear signs. That is why modern water supplies work systematically with water loss management. Water loss occurs as patterns Water loss rarely occurs as a single event. It occurs as small changes in a network over time. Therefore, effective reduction of NRW requires: measurements analysis systematic efforts. When these three elements are combined, the work becomes much more efficient. A practical model for reducing water loss The work on water loss can be understood as a coherent process: Installations in the pipeline network \u2193 Measurements and monitoring \u2193 Analysis of data \u2193 Targeted leak detection \u2193 Repairs and improvements \u2193 Lower water loss When the entire chain is functioning, water loss can be significantly reduced. Understanding the water balance The first step in working on water loss is to understand the water balance. This includes, among other things: produced water registered consumption unregistered water. By analyzing the difference, the utility can assess the extent of water loss. Divide the pipeline network into zones Many water utilities divide the network into DMAs (District Metered Areas). This makes it possible to: analyze night consumption identify abnormal patterns demarcate areas with leaks. Zoning is often an important step in the work on NRW reduction. Measure what is happening in the network Measurements provide insight into how the pipeline network behaves. This can be done with, among other things: flow measurements pressure measurements data loggers leak logger systems. Permanent monitoring makes it possible to detect changes early. Find leaks systematically When data indicates problems, targeted leak detection can be carried out. This can include: acoustic leak detection correlation measurements trace gas analysis of noise patterns. By working systematically, hidden leaks can be located precisely. Use data for prioritization Data from loggers, sensors and analyses can be used to prioritize efforts. Modern tools \u2013 including machine learning \u2013 can help to: identify changes in the network detect potential leaks prioritize investigations. This provides a better basis for decision-making for operations and investments. Repair and improve the network When leaks are identified, they can be repaired and documented. At the same time, data can be used to: prioritize pipe replacement plan maintenance improve the network structure. Over time, this can significantly reduce water loss. Water loss, energy and climate Reducing water loss is not just about operations. It is also about energy, climate and responsible use of water resources. Less water loss means, among other things: lower energy consumption less strain on waterworks better resource utilisation higher security of supply. Therefore, water loss management is increasingly included in strategic plans for water supplies. International targets for water loss Water loss is a global focus area. Many European water supplies are currently working towards levels below 15 % NRW. Reaching these levels typically requires a combination of technology, operating experience and long-term planning. Installations are the foundation Technology can only work if the installations in the pipe network do. Valves, stopcocks, covers and correct registration in GIS are crucial for both leak detection and data loggers. At DWI, we work from a simple experience: In water supply, data only works if the installations do. The entire chain \u2013 from valve to cover to advanced data processing \u2013 must work. From technology to action Effective reduction of water loss requires interaction between several elements: leak detection in the field monitoring with data loggers data analysis advice on pipelines strategic planning. When these elements work together, the effort becomes much more effective. Do you want to work more systematically with water loss? At DWI, we work daily with leak detection, pipeline monitoring and water data analysis. You can read more about: leak detection in water supplies data loggers and monitoring HydrantAI analysis advice on pipelines. Or contact us for a professional dialogue about your water supply network.<\/p>","protected":false},"author":9,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_eb_attr":"","footnotes":""},"class_list":["post-5303","page","type-page","status-publish","hentry"],"yoast_head":"\nStrategi for reduktion af NRW - DWI<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dwi.dk\/en\/strategi-for-reduktion-af-nrw-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Strategi for reduktion af NRW - DWI\" \/>\n<meta property=\"og:description\" content=\"Hvordan reducerer man vandtab i en vandforsyning? Vandtab \u2013 ofte m\u00e5lt som NRW (Non-Revenue Water) \u2013 er en af de st\u00f8rste udfordringer i moderne vandforsyninger. Selv sm\u00e5 l\u00e6kager kan over tid f\u00f8re til store tab af vand, energi og ressourcer.\u00a0 Effektiv reduktion af vandtab handler ikke kun om at finde enkelte l\u00e6kager. Det kr\u00e6ver en systematisk forst\u00e5else af hele ledningsnettet.\u00a0 Man reducerer ikke vandtab ved at finde l\u00e6kager.\u00a0 Man reducerer vandtab ved at forst\u00e5 sit vandnet.\u00a0 Hos DWI arbejder vi med en praktisk og datadrevet tilgang til reduktion af vandtab, hvor m\u00e5linger, analyse og erfaring fra felten kombineres. Hvad er vandtab (NRW)? NRW d\u00e6kker over det vand, der produceres, men ikke registreres som forbrug.\u00a0 Det kan blandt andet skyldes:\u00a0 l\u00e6kager i ledningsnet\u00a0 skjulte brud\u00a0 fejl i installationer\u00a0 m\u00e5lefejl\u00a0 uregistreret forbrug.\u00a0 I mange forsyninger opst\u00e5r vandtab gradvist og uden tydelige tegn.\u00a0 Derfor arbejder moderne vandforsyninger systematisk med water loss management. Vandtab opst\u00e5r som m\u00f8nstre Vandtab opst\u00e5r sj\u00e6ldent som \u00e9n h\u00e6ndelse.\u00a0 Det opst\u00e5r som sm\u00e5 \u00e6ndringer i et net over tid.\u00a0 Derfor kr\u00e6ver effektiv reduktion af NRW:\u00a0 m\u00e5linger\u00a0 analyse\u00a0 systematisk indsats.\u00a0 N\u00e5r disse tre elementer kombineres, bliver arbejdet langt mere effektivt. En praktisk model for reduktion af vandtab Arbejdet med vandtab kan forst\u00e5s som en sammenh\u00e6ngende proces:\u00a0 Installationer i ledningsnet\u00a0 \u2193\u00a0 M\u00e5linger og overv\u00e5gning\u00a0 \u2193\u00a0 Analyse af data\u00a0 \u2193\u00a0 M\u00e5lrettet l\u00e6kages\u00f8gning\u00a0 \u2193\u00a0 Reparation og forbedringer\u00a0 \u2193\u00a0 Lavere vandtab\u00a0 N\u00e5r hele k\u00e6den fungerer, kan vandtab reduceres markant. Forst\u00e5 vandbalancen\u00a0 Det f\u00f8rste skridt i arbejdet med vandtab er at forst\u00e5 vandbalancen.\u00a0 Det indeb\u00e6rer blandt andet:\u00a0 produceret vand\u00a0 registreret forbrug\u00a0 uregistreret vand.\u00a0 Ved at analysere forskellen kan forsyningen vurdere omfanget af vandtab.\u00a0 \u00a0 Opdel ledningsnettet i zoner\u00a0 Mange vandforsyninger opdeler nettet i DMA\u2019er (District Metered Areas).\u00a0 Det g\u00f8r det muligt at:\u00a0 analysere natforbrug\u00a0 identificere unormale m\u00f8nstre\u00a0 afgr\u00e6nse omr\u00e5der med l\u00e6kager.\u00a0 Zoneopdeling er ofte et vigtigt skridt i arbejdet med NRW-reduktion.\u00a0 \u00a0 M\u00e5l hvad der sker i nettet\u00a0 M\u00e5linger giver indsigt i hvordan ledningsnettet opf\u00f8rer sig.\u00a0 Det kan blandt andet ske med:\u00a0 flowm\u00e5linger\u00a0 trykm\u00e5linger\u00a0 dataloggere\u00a0 l\u00e6kagelogger-systemer.\u00a0 Permanent overv\u00e5gning g\u00f8r det muligt at opdage \u00e6ndringer tidligt.\u00a0 \u00a0 Find l\u00e6kager systematisk\u00a0 N\u00e5r data indikerer problemer, kan m\u00e5lrettet l\u00e6kages\u00f8gning gennemf\u00f8res.\u00a0 Det kan omfatte:\u00a0 akustisk l\u00e6kages\u00f8gning\u00a0 korrelationsm\u00e5linger\u00a0 sporgas\u00a0 analyse af st\u00f8jm\u00f8nstre.\u00a0 Ved at arbejde systematisk kan skjulte l\u00e6kager lokaliseres pr\u00e6cist.\u00a0 \u00a0 Brug data til prioritering\u00a0 Data fra loggere, sensorer og analyser kan bruges til at prioritere indsatsen.\u00a0 Moderne v\u00e6rkt\u00f8jer \u2013 herunder maskinl\u00e6ring \u2013 kan hj\u00e6lpe med at:\u00a0 identificere \u00e6ndringer i netv\u00e6rket\u00a0 opdage potentielle l\u00e6kager\u00a0 prioritere unders\u00f8gelser.\u00a0 Det giver et bedre beslutningsgrundlag for drift og investeringer.\u00a0 \u00a0 Reparer og forbedr nettet\u00a0 N\u00e5r l\u00e6kager identificeres, kan de repareres og dokumenteres.\u00a0 Samtidig kan data bruges til at:\u00a0 prioritere ledningsudskiftning\u00a0 planl\u00e6gge vedligehold\u00a0 forbedre netstrukturen.\u00a0 Over tid kan dette reducere vandtab betydeligt. Vandtab, energi og klima Reduktion af vandtab handler ikke kun om drift. Det handler ogs\u00e5 om energi, klima og ansvarlig brug af vandressourcer.\u00a0 Mindre vandtab betyder blandt andet:\u00a0 lavere energiforbrug\u00a0 mindre belastning af vandv\u00e6rker\u00a0 bedre ressourceudnyttelse\u00a0 h\u00f8jere forsyningssikkerhed.\u00a0 Derfor indg\u00e5r water loss management i stigende grad i strategiske planer for vandforsyninger. Internationale m\u00e5l for vandtab Vandtab er et globalt fokusomr\u00e5de.\u00a0 Mange europ\u00e6iske vandforsyninger arbejder i dag mod niveauer under 15 % NRW.\u00a0 \u00a0 For at n\u00e5 disse niveauer kr\u00e6ver det typisk en kombination af teknologi, driftserfaring og langsigtet planl\u00e6gning. Installationer er fundamentet Teknologi kan kun fungere, hvis installationerne i ledningsnettet g\u00f8r.\u00a0 Ventiler, stophaner, d\u00e6ksler og korrekt registrering i GIS er afg\u00f8rende for b\u00e5de l\u00e6kages\u00f8gning og dataloggere.\u00a0 Hos DWI arbejder vi ud fra en enkel erfaring:\u00a0 I vandforsyning fungerer data kun, hvis installationerne g\u00f8r. Hele k\u00e6den \u2013 fra ventil over d\u00e6ksel til avanceret databehandling \u2013 skal fungere. Fra teknologi til handling Effektiv reduktion af vandtab kr\u00e6ver samspil mellem flere elementer:\u00a0 l\u00e6kages\u00f8gning i felten\u00a0 overv\u00e5gning med dataloggere\u00a0 analyse af data\u00a0 r\u00e5dgivning om ledningsnet\u00a0 strategisk planl\u00e6gning.\u00a0 N\u00e5r disse elementer arbejder sammen, bliver indsatsen langt mere effektiv. Vil I arbejde mere systematisk med vandtab? Hos DWI arbejder vi dagligt med l\u00e6kages\u00f8gning, overv\u00e5gning af ledningsnet og analyse af vanddata.\u00a0 I kan l\u00e6se mere om:\u00a0 l\u00e6kages\u00f8gning i vandforsyninger\u00a0 dataloggere og overv\u00e5gning\u00a0 HydrantAI analyse\u00a0 r\u00e5dgivning om ledningsnet.\u00a0 Eller kontakt os for en faglig dialog om jeres vandforsyningsnet.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dwi.dk\/en\/strategi-for-reduktion-af-nrw-2\/\" \/>\n<meta property=\"og:site_name\" content=\"DWI\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/firmaleifkoch\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-05T00:43:36+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/dwi.dk\\\/strategi-for-reduktion-af-nrw-2\\\/\",\"url\":\"https:\\\/\\\/dwi.dk\\\/strategi-for-reduktion-af-nrw-2\\\/\",\"name\":\"Strategi for reduktion af NRW - DWI\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dwi.dk\\\/#website\"},\"datePublished\":\"2026-03-05T00:41:50+00:00\",\"dateModified\":\"2026-03-05T00:43:36+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/dwi.dk\\\/strategi-for-reduktion-af-nrw-2\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/dwi.dk\\\/strategi-for-reduktion-af-nrw-2\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/dwi.dk\\\/strategi-for-reduktion-af-nrw-2\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Hjem\",\"item\":\"https:\\\/\\\/dwi.dk\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Strategi for reduktion af NRW\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/dwi.dk\\\/#website\",\"url\":\"https:\\\/\\\/dwi.dk\\\/\",\"name\":\"DWI\",\"description\":\"L\u00e6kagesporing af professionelle l\u00e6kageoperat\u00f8rer\",\"publisher\":{\"@id\":\"https:\\\/\\\/dwi.dk\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/dwi.dk\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/dwi.dk\\\/#organization\",\"name\":\"DWI\",\"url\":\"https:\\\/\\\/dwi.dk\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/dwi.dk\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"http:\\\/\\\/dwi.dk\\\/wp-content\\\/uploads\\\/2022\\\/02\\\/Logo-leifkoch-2.png\",\"contentUrl\":\"http:\\\/\\\/dwi.dk\\\/wp-content\\\/uploads\\\/2022\\\/02\\\/Logo-leifkoch-2.png\",\"width\":275,\"height\":70,\"caption\":\"DWI\"},\"image\":{\"@id\":\"https:\\\/\\\/dwi.dk\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/firmaleifkoch\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/2576149\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UC4mTQfh2skhYl1-JUcS17Gw\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Strategy for reducing NRW - DWI","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/dwi.dk\/en\/strategi-for-reduktion-af-nrw-2\/","og_locale":"en_US","og_type":"article","og_title":"Strategi for reduktion af NRW - DWI","og_description":"Hvordan reducerer man vandtab i en vandforsyning? Vandtab \u2013 ofte m\u00e5lt som NRW (Non-Revenue Water) \u2013 er en af de st\u00f8rste udfordringer i moderne vandforsyninger. Selv sm\u00e5 l\u00e6kager kan over tid f\u00f8re til store tab af vand, energi og ressourcer.\u00a0 Effektiv reduktion af vandtab handler ikke kun om at finde enkelte l\u00e6kager. Det kr\u00e6ver en systematisk forst\u00e5else af hele ledningsnettet.\u00a0 Man reducerer ikke vandtab ved at finde l\u00e6kager.\u00a0 Man reducerer vandtab ved at forst\u00e5 sit vandnet.\u00a0 Hos DWI arbejder vi med en praktisk og datadrevet tilgang til reduktion af vandtab, hvor m\u00e5linger, analyse og erfaring fra felten kombineres. Hvad er vandtab (NRW)? NRW d\u00e6kker over det vand, der produceres, men ikke registreres som forbrug.\u00a0 Det kan blandt andet skyldes:\u00a0 l\u00e6kager i ledningsnet\u00a0 skjulte brud\u00a0 fejl i installationer\u00a0 m\u00e5lefejl\u00a0 uregistreret forbrug.\u00a0 I mange forsyninger opst\u00e5r vandtab gradvist og uden tydelige tegn.\u00a0 Derfor arbejder moderne vandforsyninger systematisk med water loss management. Vandtab opst\u00e5r som m\u00f8nstre Vandtab opst\u00e5r sj\u00e6ldent som \u00e9n h\u00e6ndelse.\u00a0 Det opst\u00e5r som sm\u00e5 \u00e6ndringer i et net over tid.\u00a0 Derfor kr\u00e6ver effektiv reduktion af NRW:\u00a0 m\u00e5linger\u00a0 analyse\u00a0 systematisk indsats.\u00a0 N\u00e5r disse tre elementer kombineres, bliver arbejdet langt mere effektivt. En praktisk model for reduktion af vandtab Arbejdet med vandtab kan forst\u00e5s som en sammenh\u00e6ngende proces:\u00a0 Installationer i ledningsnet\u00a0 \u2193\u00a0 M\u00e5linger og overv\u00e5gning\u00a0 \u2193\u00a0 Analyse af data\u00a0 \u2193\u00a0 M\u00e5lrettet l\u00e6kages\u00f8gning\u00a0 \u2193\u00a0 Reparation og forbedringer\u00a0 \u2193\u00a0 Lavere vandtab\u00a0 N\u00e5r hele k\u00e6den fungerer, kan vandtab reduceres markant. Forst\u00e5 vandbalancen\u00a0 Det f\u00f8rste skridt i arbejdet med vandtab er at forst\u00e5 vandbalancen.\u00a0 Det indeb\u00e6rer blandt andet:\u00a0 produceret vand\u00a0 registreret forbrug\u00a0 uregistreret vand.\u00a0 Ved at analysere forskellen kan forsyningen vurdere omfanget af vandtab.\u00a0 \u00a0 Opdel ledningsnettet i zoner\u00a0 Mange vandforsyninger opdeler nettet i DMA\u2019er (District Metered Areas).\u00a0 Det g\u00f8r det muligt at:\u00a0 analysere natforbrug\u00a0 identificere unormale m\u00f8nstre\u00a0 afgr\u00e6nse omr\u00e5der med l\u00e6kager.\u00a0 Zoneopdeling er ofte et vigtigt skridt i arbejdet med NRW-reduktion.\u00a0 \u00a0 M\u00e5l hvad der sker i nettet\u00a0 M\u00e5linger giver indsigt i hvordan ledningsnettet opf\u00f8rer sig.\u00a0 Det kan blandt andet ske med:\u00a0 flowm\u00e5linger\u00a0 trykm\u00e5linger\u00a0 dataloggere\u00a0 l\u00e6kagelogger-systemer.\u00a0 Permanent overv\u00e5gning g\u00f8r det muligt at opdage \u00e6ndringer tidligt.\u00a0 \u00a0 Find l\u00e6kager systematisk\u00a0 N\u00e5r data indikerer problemer, kan m\u00e5lrettet l\u00e6kages\u00f8gning gennemf\u00f8res.\u00a0 Det kan omfatte:\u00a0 akustisk l\u00e6kages\u00f8gning\u00a0 korrelationsm\u00e5linger\u00a0 sporgas\u00a0 analyse af st\u00f8jm\u00f8nstre.\u00a0 Ved at arbejde systematisk kan skjulte l\u00e6kager lokaliseres pr\u00e6cist.\u00a0 \u00a0 Brug data til prioritering\u00a0 Data fra loggere, sensorer og analyser kan bruges til at prioritere indsatsen.\u00a0 Moderne v\u00e6rkt\u00f8jer \u2013 herunder maskinl\u00e6ring \u2013 kan hj\u00e6lpe med at:\u00a0 identificere \u00e6ndringer i netv\u00e6rket\u00a0 opdage potentielle l\u00e6kager\u00a0 prioritere unders\u00f8gelser.\u00a0 Det giver et bedre beslutningsgrundlag for drift og investeringer.\u00a0 \u00a0 Reparer og forbedr nettet\u00a0 N\u00e5r l\u00e6kager identificeres, kan de repareres og dokumenteres.\u00a0 Samtidig kan data bruges til at:\u00a0 prioritere ledningsudskiftning\u00a0 planl\u00e6gge vedligehold\u00a0 forbedre netstrukturen.\u00a0 Over tid kan dette reducere vandtab betydeligt. Vandtab, energi og klima Reduktion af vandtab handler ikke kun om drift. Det handler ogs\u00e5 om energi, klima og ansvarlig brug af vandressourcer.\u00a0 Mindre vandtab betyder blandt andet:\u00a0 lavere energiforbrug\u00a0 mindre belastning af vandv\u00e6rker\u00a0 bedre ressourceudnyttelse\u00a0 h\u00f8jere forsyningssikkerhed.\u00a0 Derfor indg\u00e5r water loss management i stigende grad i strategiske planer for vandforsyninger. Internationale m\u00e5l for vandtab Vandtab er et globalt fokusomr\u00e5de.\u00a0 Mange europ\u00e6iske vandforsyninger arbejder i dag mod niveauer under 15 % NRW.\u00a0 \u00a0 For at n\u00e5 disse niveauer kr\u00e6ver det typisk en kombination af teknologi, driftserfaring og langsigtet planl\u00e6gning. Installationer er fundamentet Teknologi kan kun fungere, hvis installationerne i ledningsnettet g\u00f8r.\u00a0 Ventiler, stophaner, d\u00e6ksler og korrekt registrering i GIS er afg\u00f8rende for b\u00e5de l\u00e6kages\u00f8gning og dataloggere.\u00a0 Hos DWI arbejder vi ud fra en enkel erfaring:\u00a0 I vandforsyning fungerer data kun, hvis installationerne g\u00f8r. Hele k\u00e6den \u2013 fra ventil over d\u00e6ksel til avanceret databehandling \u2013 skal fungere. Fra teknologi til handling Effektiv reduktion af vandtab kr\u00e6ver samspil mellem flere elementer:\u00a0 l\u00e6kages\u00f8gning i felten\u00a0 overv\u00e5gning med dataloggere\u00a0 analyse af data\u00a0 r\u00e5dgivning om ledningsnet\u00a0 strategisk planl\u00e6gning.\u00a0 N\u00e5r disse elementer arbejder sammen, bliver indsatsen langt mere effektiv. Vil I arbejde mere systematisk med vandtab? Hos DWI arbejder vi dagligt med l\u00e6kages\u00f8gning, overv\u00e5gning af ledningsnet og analyse af vanddata.\u00a0 I kan l\u00e6se mere om:\u00a0 l\u00e6kages\u00f8gning i vandforsyninger\u00a0 dataloggere og overv\u00e5gning\u00a0 HydrantAI analyse\u00a0 r\u00e5dgivning om ledningsnet.\u00a0 Eller kontakt os for en faglig dialog om jeres vandforsyningsnet.","og_url":"https:\/\/dwi.dk\/en\/strategi-for-reduktion-af-nrw-2\/","og_site_name":"DWI","article_publisher":"https:\/\/www.facebook.com\/firmaleifkoch","article_modified_time":"2026-03-05T00:43:36+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/dwi.dk\/strategi-for-reduktion-af-nrw-2\/","url":"https:\/\/dwi.dk\/strategi-for-reduktion-af-nrw-2\/","name":"Strategy for reducing NRW - DWI","isPartOf":{"@id":"https:\/\/dwi.dk\/#website"},"datePublished":"2026-03-05T00:41:50+00:00","dateModified":"2026-03-05T00:43:36+00:00","breadcrumb":{"@id":"https:\/\/dwi.dk\/strategi-for-reduktion-af-nrw-2\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/dwi.dk\/strategi-for-reduktion-af-nrw-2\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/dwi.dk\/strategi-for-reduktion-af-nrw-2\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Hjem","item":"https:\/\/dwi.dk\/"},{"@type":"ListItem","position":2,"name":"Strategi for reduktion af NRW"}]},{"@type":"WebSite","@id":"https:\/\/dwi.dk\/#website","url":"https:\/\/dwi.dk\/","name":"DWI A \/ S","description":"Leak detection by professional leak operators","publisher":{"@id":"https:\/\/dwi.dk\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/dwi.dk\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/dwi.dk\/#organization","name":"DWI A \/ S","url":"https:\/\/dwi.dk\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/dwi.dk\/#\/schema\/logo\/image\/","url":"http:\/\/dwi.dk\/wp-content\/uploads\/2022\/02\/Logo-leifkoch-2.png","contentUrl":"http:\/\/dwi.dk\/wp-content\/uploads\/2022\/02\/Logo-leifkoch-2.png","width":275,"height":70,"caption":"DWI"},"image":{"@id":"https:\/\/dwi.dk\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/firmaleifkoch","https:\/\/www.linkedin.com\/company\/2576149","https:\/\/www.youtube.com\/channel\/UC4mTQfh2skhYl1-JUcS17Gw"]}]}},"_links":{"self":[{"href":"https:\/\/dwi.dk\/en\/wp-json\/wp\/v2\/pages\/5303","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dwi.dk\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/dwi.dk\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/dwi.dk\/en\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/dwi.dk\/en\/wp-json\/wp\/v2\/comments?post=5303"}],"version-history":[{"count":7,"href":"https:\/\/dwi.dk\/en\/wp-json\/wp\/v2\/pages\/5303\/revisions"}],"predecessor-version":[{"id":5312,"href":"https:\/\/dwi.dk\/en\/wp-json\/wp\/v2\/pages\/5303\/revisions\/5312"}],"wp:attachment":[{"href":"https:\/\/dwi.dk\/en\/wp-json\/wp\/v2\/media?parent=5303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}