Hazardous blue-green algae advisory at Lake Nokomis
The Minneapolis Park and Recreation Board issued a hazardous blue-green algae advisory Wednesday for Lake Nokomis' Main Beach and 50th Street Beach, warning people and pets to stay out of the water.[1]
Water samples this week showed microcystin levels above the Minnesota Pollution Control Agency's safe-swimming standard.[1] Officials told people to avoid algae scum, keep pets away, clean fish with tap or bottled water, and shower immediately after any exposure.[1]
Microcystin is a toxin produced by cyanobacteria, commonly called blue-green algae, and can cause skin irritation, stomach illness, and other health problems in people and pets.
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📌 Key Facts
- Minneapolis Park and Recreation Board issued a hazardous algae advisory for Lake Nokomis Main Beach and 50th Street Beach on Wednesday.
- Water samples this week showed microcystin from blue‑green algae above the Minnesota Pollution Control Agency’s safe‑swimming standard.
- Officials advise people and pets to stay out of the water, avoid algae scum, clean fish with tap or bottled water, and shower immediately after any exposure.
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June 03, 2026