Blue-Green Algae Warning Issued for Lake Afton

(Sedgwick County, Kan.) – The Kansas Department of Health and Environment (KDHE) issued a blue-green algae warning for Lake Afton on April 3, 2026.

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

• Inhalation of spray or aerosols may be harmful.
• Lake water is not safe to drink for pets or livestock.
• Lake water, regardless of blue-green algae status, should never be consumed by humans.
• Water contact should be avoided.
• Fish may be eaten if they are rinsed with clean water and only the fillet portion is consumed, while all other parts are discarded.
• Do not allow pets to eat dried algae.
• If lake water contacts skin, wash with clean water as soon as possible.
• Avoid areas of visible algae accumulation.

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)