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K-State Research and Extension
123 Umberger Hall
Manhattan, KS 66506-3401
785-532-5820
extadmin@ksu.edu

June 28, 2022

Be Aware of Harmful Algal Blooms this Holiday Weekend

Submitted by Abigail Crouse

Dog drinking water courtesy Ty Vaughn

If you are planning on spending the Fourth of July holiday weekend near a water body, be aware of Harmful Algal Blooms, or HABs. HABs are composed of blue-green algae that can sometimes create toxins that harm humans and pets.

The biggest risk to health comes from contact with or ingestion of the toxins produced by the blue-green algae. This can occur during activities that bring an individual into full-body contact with the water or from inhaling spray cast up from the water's surface. Children and pets are most at risk and can become ill after being exposed. Adults with compromised immune systems are also more susceptible to illness from exposure. The most common complaints include vomiting, diarrhea, skin rashes, eye irritation and respiratory symptoms. If you suspect a person has suffered an adverse health event from HAB exposure, seek medical treatment immediately, then report to KDHE by calling 877-427-7317 or emailing KDHE.EpiHotline@ks.gov.

When in doubt, stay out! The greener the water, the more likely it is that it is dominated by blue-green algae. Avoid strong green or dark green water, the presence of observable floating chunks, the presence of surface scum, or water with an offensive odor. Also look for signage posted warning of the presence of a HABs.

For more information, visit the Pollution Prevention Institute’s HABs website: https://www.sbeap.org/water-quality/harmful-algal-blooms.