blue-green algae

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People swimming in Amsterdam. June 20, 2026.
TechNature
Health risks at dozens of outside swimming locations in Netherlands
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The sun shines over the Muiderslot, Muiden, Weesp, and the IJmeer in Noord-Holland. 11 August 2024
HealthNature
Dogs falling ill, dying after swimming in the IJmeer near Amsterdam & Almere
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A child goes swimming wearing a life jacket
HealthNature
Swimming season starts at hundreds of natural water sites, but warnings already in place
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Blue-green algae on Taihu lake
1-1-2TechNature
Two Dutch swimming sites closed over PFAS as dozens more receive health warnings
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Dead fish along a river coast.
Nature
Mass fish deaths due to heavy rainfall
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Blue-green algae on Taihu lake
HealthNature
Warning for blue-green algae in warming waters; Record streak of summer days in June
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vrouwenpolder
TechNature
Tropical heat to hit Netherlands by Wednesday; Heatwave likely
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Swimming and tanning at Borneokade in Amsterdam Oost, 24 July 2019
HealthTechNature
Swimmers warned against cold water, blue-green algae as tropical weather arrives
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Maas River, Rotterdam
Nature
Netherlands water shortage persists, despite rain