Water losses from water mains in Norway stand at an average of 31 per cent, a figure that has remained virtually unchanged over the last 10 years, despite a strong focus on pipe renewal. A report from Norsk Vann shows that pipe renewal pays off.

The report examines what is referred to as a sustainable leakage level and will be available before the summer holidays. It is based on work carried out over the past year by the Swedish consultancy firm Rise in collaboration with the Norwegian firm Powel. At the Nordic Drinking Water Conference in Oslo, researcher Annika Malm from Rise presented some of the conclusions.