Stockholm Warns Against Several Swimming Spots Due to Algae and Poor Water Quality

Stockholm residents looking to cool off this summer are being warned to avoid several popular swimming locations due to algae blooms and poor water quality. The city's municipality has issued advisories, with some beaches facing closures for the entire season.

Two specific locations, Ängbybadet Östra and Johannelundsbadet, have been classified as having poor water quality based on test results from the past four seasons. These beaches will remain closed for the duration of the current swimming season, though a new assessment is scheduled for the fall.

For other affected swimming spots, the warnings will remain in place until the municipality determines that the algae blooms have subsided. Stina Drakare, an ecologist at the Swedish University of Agricultural Sciences, explained that algae blooms occur when plankton multiply rapidly, becoming visible to the naked eye. Cyanobacteria, a type of algae found in warm, nutrient-rich freshwater, can be toxic and pose risks to both humans and animals during hot summer weather.

Drakare advised swimmers to heed the municipal warnings and to shower thoroughly after swimming to wash off any residual algae, which can cause itching and other skin irritations. Swimming in waters with significant algae blooms can lead to symptoms such as itching, stomach pain, and asthma-like conditions, while for animals, ingestion of large quantities can be fatal.