- Associated Press - Thursday, September 22, 2016

BISMARCK, N.D. (AP) - North Dakota’s Health and Agriculture Departments have withdrawn blue-green algae advisories for Cottonwood Lake and Harvey Reservoir.

Authorities said Thursday that the warnings were issued because of high levels of microcystin, a cyanotoxin toxin caused by blue-green algae. The Health Department has been monitoring each lake, and results from samples this week show lower toxin concentrations.

Hot summer weather can contribute to the production of the algae that’s also known as cyanobacteria. People and animals who ingest affected water can get sick and even die. There’s no known antidote for the toxins.

People are urged to err on the side of caution and avoid water that looks discolored or scummy or has a foul odor.

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