DOH warns of toxic algae blooms following pet deaths

OLYMPIA, Wash. — The Washington State Department of Health is warning the public to stay alert for toxic algae blooms while enjoying the state’s lakes and rivers.

RELATED: Hot, dry weather fuels spread of toxic algae, beach closures

The warning comes as the DOH, the Washington State Department of Ecology and the Spokane Regional Health District are investigating the deaths of three dogs who had swum in the Little Spokane River near Chattaroy and another dog who had become ill after swimming in the Spokane River near Harvard Road Bridge.

Harmful algae blooms are being detected across the state as the frequent hot and dry weather takes its toll on numerous bodies of water, providing the perfect breeding grounds for dangerous, toxic algae.

“Due to ongoing drought and warm temperatures in our state, lakes, rivers, and streams are under tremendous stress right now,” said Acting Chief Science Officer Scott Lindquist, MD, MPH. “As a result, we are receiving reports of toxic algae blooms in areas we have not seen before.”

Officials said the freshwater algae blooms are caused by cyanobacteria (blue-green algae), commonly found in lakes and are now in warm, slow-moving, and stagnant rivers and streams.

As for how toxic a bloom can be, it can vary and is challenging to predict. “Only testing can tell if it is dangerous,” officials said.

According to a release from the DOH, animals are at risk when they drink contaminated water, swallow water while swimming or lick cyanobacteria off their fur.

Signs that an animal might have been exposed to a toxic algae bloom could include vomiting and/or diarrhea, loss of coordination, tremors and seizures.

Officials said if your pet has been exposed, immediately wash them with clean water.

Below are some precautions to follow when choosing water for recreation:

• Look for signs of toxic algae blooms and pay attention to signage. When in doubt, stay out!
• Do not swim in and limit exposure to water that is under a health advisory or is listed as having toxic algae bloom on the Washington State Department of Ecology toxic algae tracking site.
• Individuals who swim or play in the water should shower with soap and water when done.
• Contact a health care provider immediately if you become ill or have symptoms after suspected exposure to algae bloom.
• Report suspected toxic algae blooms online at the Washington State toxic algae tracking site or contact your local health jurisdiction.

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