Harmful blue-green algae blooms, also known as cyanotoxins, have been increasingly detected in various bodies of water across the United States, prompting health and safety advisories. The National Park Service issued a water advisory for Lake Powell after toxic algae were found, with cyanotoxins reaching high exposure levels. Officials have urged visitors to avoid contact with the blue-green water, rinse off after exposure, and keep children and pets away from affected areas. Similar warnings have been issued for Antelope Canyon and several lakes in Kansas. The Arizona Department of Environmental Quality has also alerted the public to monitor for harmful algae blooms in Arizona lakes, especially during the summer months when recreational activities such as swimming and boating are common.