Officials fear algae toxin has tainted city water supply

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GREENFIELD, Iowa – Officials have urged people not to drink tap water in a southern Iowa community because they suspect an algae toxin has tainted the supply.

Greenfield Municipal Utilities announced on its Facebook page that microcystin was potentially detected in the drinking water and that a water sample had been sent to a lab Tuesday for testing.

The Des Moines Register reports that the toxin is produced by blue-green algae. A main source of Greenfield city water comes from Lake Greenfield, which has been experiencing an algal bloom.

Drinking water containing microcystin can result in abnormal liver function, diarrhea, vomiting, nausea, numbness or dizziness.

Information from: The Des Moines Register,