LOOK OUT FOR
A harmful algal bloom (HAB) is an
overgrowth of algae in a water body that
could affect water quality and aquatic
life. Some HABs produced by bacteria
can create toxins that may also harm
people, animals, and the local
environment.
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DANGER

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HOW TO IDENTIFY A HARMFUL ALGAL BLOOM
Algal blooms can make the water appear green, blue, brown, gold, or red
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EXPOSED?
Shower immediately.
See a doctor or vet if
symptoms occur.
Ear, eye, nose,
skin, and throat
irritation, and
headache
Paralysis,
respiratory
illness, and
seizures
Seeing colors, scum, mats, foam, or paint-like streaks in the water or clumps on the shore may indicate a bloom.
However, only professional water testing can confirm if HABs and toxins are present.
States often have monitoring programs for this purpose.
Vary depending on how the person or animal was exposed, and whether the HAB is in salt or fresh water.
Abdominal pain,
diarrhea, liver and
kidney damage, and
vomiting
Drooling, diarrhea,
low energy, not
eating, stumbling,
tremors, and
vomiting
WHEN IN DOUBT, STAY OUT!
Stay away from the water when a suspected HAB is present.
to
DON'T
Play with scum
or mats on
the shore
DON'T
Let animals
drink water, eat
algae, or swim
DON'T
Swim
DON'T
Fish or wade
DON'T
Boat or kayak
FOR MORE INFORMATION OR TO REPORT POSSIBLE
HARMFUL ALGAL BLOOMS:
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