Ageing underground infrastructure

Ageing sewerage systems
  • Poor state of the sewerage systems requiring significant maintenance and renovation
  • Ageing sewerage infrastructure


Years old on average

The conditions in the underground infrastructure in Norva24’s current markets are generally poor because of underinvestments and delayed renovations resulting in a general investment backlog within the systems. In Norva24’s current markets, the average age of the underground infrastructure is approximately 40 years and, in some cases, as old as 150 years leading to damages in the sewers and increased leakage rates. This has an impact on the reliability and quality of the overall underground infrastructure which impacts the entire society. In Norway, Germany, and Sweden, approximately 0.5 to 1.2 percent of sewers will currently be renewed every year. Even though the quality varies, smaller municipalities normally have a less systematic approach to the maintenance of the underground infrastructure. However, they are on the other hand usually of a lower age. The poor state of the underground infrastructure is an important growth driver for the UIM industry, as the need for maintenance and renovation increases. Other European markets, which Norva24 currently does not operate in, are characterized by similar problems with ageing underground infrastructure.

Condition of the underground infrastructure in Norva24 current markets

In Denmark, the underground infrastructure are generally in relatively good condition as annual investments of approximately NOK 11 billion have been made since 2012. As a result, the average system is of a younger age and has a significantly lower leakage rate compared to Norway, Germany and Sweden.