Blue-Green Algae Warning Issued on Aug. 1, 2025, for Lake Afton

(Sedgwick County, Kan.) – The Kansas Department of Health and Environment (KDHE) has issued this year’s first blue-green algae warning for Lake Afton.

A Warning status indicates that conditions are unsafe for human and pet exposure.

• Water contact, including swimming and boating, should be
• Inhalation of spray or aerosols may be
• Lake water is not safe to drink for pets or
• Do not allow pets to eat dried
• Fish may be eaten if they are rinsed with clean water and only the fillet portion is consumed, while all other parts are discarded.
• If lake water contacts skin, wash with clean water as soon as
• Avoid areas of visible algae

KDHE investigates publicly accessible bodies of water for blue-green algae, when the agency receives reports of potential algae blooms in Kansas lakes. Based on credible field observation and sampling results, KDHE reports on potentially harmful conditions.

To check the status of a Kansas lake or to learn more about the health risks of harmful algal blooms, visit:

• Harmful Algal Blooms | KDHE, KS
• Health Risks Associated with HABs | KDHE, KS
• Blue-Green Algae Information / Outdoor Health and Safety / Outdoor Activities / KDWP - KDWP (ksoutdoors.com)

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