Contract signed with the City of Oslo for the construction of a new water treatment plant
Reference is made to the stock exchange announcement published on 19.10.2022 stating that AF Gruppen was appointed by the City of Oslo for a partnering contract for the construction of a new water treatment plant at Huseby in Oslo, as part of the New Water Supply project. The collaboration has now moved from development, planning, and design to phase 2, which is detailed design and construction. The contract is a collaborative contract in an alliance between the City of Oslo, represented by the Water and Sewage department, the designers Multiconsult and AF Gruppen. The main works are carried out inside the mountain facility at Huseby.

The works for AF Gruppen include groundwork and concrete work, process plant, dosing and sludge plant, and electrical work. The works are underway and are to be completed in the 4th quarter of 2027. The agreement has a value of approximately NOK 7,600 million excluding VAT.
“AF Gruppen is very pleased to have been awarded the contract to build a new water treatment plant for the City of Oslo. We look forward to continuing good cooperation with the City of Oslo and carrying out the construction so that the residents of Oslo have a safe and secure water supply in the future,” says Amund Tøftum, CEO of AF Gruppen.
About the Project
The City of Oslo has only one main water source. This makes the capital’s water supply very vulnerable. The City of Oslo is therefore building a new water supply from Holsfjorden in Lier Municipality and a water treatment plant and a new main pipeline network in Oslo. When the facility is completed, Oslo will have a fully functional and robust backup water supply.
Contacts
Geir Flåta
Tel:47 994 01 510geir.flata@afgruppen.noKnut Ekern
Tel:+47 930 02 600knut.ekern@afgruppen.noImages

AF Gruppen
AF Gruppen is a leading contracting and industrial group that was formed by an entrepreneurial spirit and execution capabilities. The group has 6,000 employees and revenue reached NOK 30,5 billion in 2023. AF Gruppen is listed on Oslo Stock Exchange (AFG).
We provide a broad range of services with seven operational business areas: Civil Engineering, Building, Betonmast, Property, Energy and Environment, Sweden and Offshore.
Subscribe to releases from AF Gruppen ASA
Subscribe to all the latest releases from AF Gruppen ASA by registering your e-mail address below. You can unsubscribe at any time.
Latest releases from AF Gruppen ASA
Delivering technical HVAC-R Installation to Princess Elisabeth Island in Belgium28.11.2025 13:40:51 CET | Press release
Aeron, a company within AF Gruppen, has entered into an agreement with the HSI Joint Venture, consisting of HSM Offshore Energy, Iemants and Iv – Offshore and Energy, with a value of approximately NOK 150 million excluding VAT.
Awarded contract at Hamra substation25.11.2025 08:14:10 CET | Press release
Kanonaden Entreprenad Mälardalen AB, a company within AF Gruppen, has been awarded the contract to carry out extensive ground and concrete works at Hamra on behalf of Linxon Sweden AB. The project is being undertaken for Svenska kraftnät. It is a turnkey contract valued at SEK 117 million excluding VAT.
Building care homes in Östervåla17.11.2025 16:14:55 CET | Press release
HMB Construction AB, a subsidiary of AF Gruppen, has signed a contract with Hebygårdar AB for the construction of the Tallgården care home in Östervåla. The contract value is SEK 162 million, excluding VAT.
Nominated for new contract at the new Aker Hospital17.11.2025 13:06:38 CET | Press release
AF Energi, a subsidiary of AF Gruppen, has been nominated by Helse Sør-Øst RHF for the contract concerning gas and compressed air at the new Aker Hospital.
Revenue growth and good results in the third quarter14.11.2025 07:00:00 CET | Press release
AF Gruppen reported revenues of NOK 7,803 million in the third quarter. Earnings before tax amounted to NOK 398 million. The quarter was characterized by good results, strong cash flow and a high order backlog.
In our pressroom you can read all our latest releases, find our press contacts, images, documents and other relevant information about us.
Visit our pressroom