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YIT signs contract on new infrastructure works for Sweden's largest wastewater treatment plant

  • YIT signs contract on new infrastructure works for Sweden's largest wastewater treatment plant
    Henriksdal wastewater treatment plant, Sweden (Image by YIT Group)

About the entity

YIT Group
YIT is the largest Finnish and significant North European construction company.

YIT and Stockholm Vatten AB have signed an agreement on new infrastructure work in Henriksdal wastewater treatment plant in Stockholm, Sweden. The work will begin in February 2019 and it will be completed in December 2023. The value of the contract is approximately EUR 60 million. The project is booked in the order backlog of the first quarter in 2019.

The contract covers earth works, concrete work, rock engineering of the plant as well as installation work for underground wastewater systems. YIT will be responsible for the interior of the tunnel that will be the basis of the new wastewater treatment technology in the plant. YIT will also renovate and improve capacity of the entire sludge treatment process. The largest part of the contract includes the construction of a new sludge separation building including auxiliary equipment. The operation of the existing plant will be ongoing throughout the construction period.

"YIT has a solid knowhow and experience in constructing demanding underground treatment plants. We have partnered with Stockholm Vatten since 2016 and contracted three major projects, therefore we are proud of the continued trust being part of this future development project, which is in line with our vision of creating sustainable cities. We will ensure that the customer will have the latest and most modern wastewater treatment technology available today”, says Harri Kailasalo, EVP, Infrastructure projects at YIT.

The Henriksdal wastewater treatment plant is the largest in Sweden and one of the largest in Europe. It serves approximately one million people and treats approx. 2/3 of the municipal wastewater of the Stockholm area. It is also one of the world’s largest wastewater treatment plants located inside rock.

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