On Wednesday June 1st, it became known that the wastewater treatment plant Syvab released 1.8 million litres of untreated wastewater into Lake Mälaren on June 16th.
The reason for the release of the untreated wastewater was heavy rain that a pumping machine could not handle.
Now an incident report shows that on June 15th the Stockholm Water and Waste Authority released 25.6 million litres of untreated wastewater and 46.4 million litres of partially treated wastewater at the treatment plant in Henriksdal, according to Dagens ETC.
Recently, local authorities have been warning against swimming at a large number of Stockholm city bathing areas this summer due to algae blooms.
Alva Engström, environmental and health protection inspector at the City of Stockholm, wrote in a comment to the newspaper that it is difficult to assess how the wastewater discharge has affected the quality of bathing water.