How VDL in Luxembourg achieved a tenfold decrease in water leakage from 36 % to 3.7 %

Service des eaux de la Ville de Luxembourg is the public authority with responsibility for the provision of water to Luxembourg City. It supplies 105,000 residents over an area of 51 km2. Although Luxembourg City is not particularly large, it poses a number of challenges for the water provider. The city layout is complex, as it straddles hills and drops into two gorges. The water infrastructure must cope with elevation changes of over 100 m. Additionally, there are large changes in population with the number of people present in the city more than doubling during the day.