The European Investment Bank (EIB) has signed a SEK 1 billion (US$ 119.85 million) loan agreement with the Käppalaförbundet, an intermunicipality partnership in the Stockholm archipelago, for an upgrade and capacity increase of their wastewater treatment plant. The centralized wastewater treatment at Käppala will be upgraded to deal with the wastewater of around 900 000 people.
The original plant was put into operation in 1969 and treats wastewater from 11 municipalities located north and east of Stockholm.