The next few days are expected to be warm in Sörmland.

SMHI reports temperatures around 25 degrees.

However, the residents of Strängnäs must be careful when choosing a place to cool off.

On its website, the municipality writes about unserviceable water at Husbybadet and Häradsbadet, as a result of algae blooms.

Ingestion of water with blooming algae can lead to itching, vomiting and diarrhoea.

Skin irritation can also occur in contact with water from algae bloom areas.

At Frösjöstrand in Gnesta, the advice applies throughout the bathing season as the water has been classified as poor bathing water quality.

There it is about elevated values ​​of so-called E.coli bacteria.

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Ann-Turi Skjevik, oceanographer at SMHI, tells you how to recognize the bacteria - and when to watch out.

Photo: SVT