08/08/2025
Please be careful with your pets around Sloan’s Lake and keep them out of the water where the algae is in bloom. If they are exposed and begin to show any signs of being ill, call our office immediately for information on what to do next.
For Immediate Release
Thursday, August 7, 2025
Blue-green algae bloom in Cheyenne’s Sloans Lake
Cheyenne, WY – The Wyoming Department of Health has issued a bloom advisory for Sloans Lake in Cheyenne, warning residents about the increasing risk of blue-green algae blooms. While Sloans Lake is used for recreational and irrigation purposes, it is not part of the City of Cheyenne’s drinking water supply.
The Cheyenne Board of Public Utilities (BOPU) will continue to monitor water quality closely and apply necessary treatments to manage any potential algae blooms.
Blue-green algae tend to form harmful blooms in slow-moving water during the late summer, when water temperatures rise. These blooms can produce toxins and other irritants that pose health risks to humans, pets, livestock, and wildlife.
The BOPU is asking residents to follow these recommendations:
Avoid contact with water in the vicinity of a bloom, especially in areas where cyanobacteria may be dense and form a residue.
Do not ingest water where a bloom may be present. Boiling, using filtration, and/or other treatments will not remove toxins.
Rinse fish with clean water and eat only the fillet portion.
Avoid any water spray-off where a bloom may be present.
Do not allow pets or livestock to drink water near a bloom, eat bloom material or lick fur after contact with a bloom.
If people, pets, or livestock come into contact with a bloom, rinse off with clean water as soon as possible.
For more information about blue-green algae, please visit www.wyohcbs.org.
