Illinois Officials Confirm Algal Bloom on Portions of the Illinois
River
Residents should use caution when
recreating and be aware of blue-green algae
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[June 24, 2021]
Following sampling on the Illinois River,
Illinois officials have confirmed the presence of the algal toxin,
microcystin, above the 8 parts per billion (ppb) health advisory
established by U.S. Environmental Protection Agency.
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The Illinois Environmental Protection Agency collected samples
on June 10 along the northern bank of the Illinois River at the
Starved Rock Lock & Dam (Illinois River mile 231.1). The
Illinois EPA’s laboratory confirmed the microcystin level in the
sample at 95.4 ppb, well above the health advisory limit.
Illinois EPA proactively sampled again on June 16 for
microcystin and awaits the results of the resampling event.
Algal toxins (e.g., microcystin and cylindrospermopsin),
sometimes produced by blue-green algae, can cause sickness or
other adverse health effects in people and pets, depending on
the amount and type of exposure. Illinois EPA also tested for
cylindrospermopsin, anatoxin, and saxitoxin but did not detect
their presence near any level of concern.
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The very young, elderly, and people with compromised immune
systems are most at risk of illness if exposed to algal toxins.
Adverse health effects attributable to algal toxins can occur
from direct skin contact, swallowing contaminated water, or
inhaling water droplets in the air. Symptoms of exposure include
rashes, hives, diarrhea, vomiting, coughing or wheezing. More
severe symptoms may result from longer or greater amounts of
exposure.
If you are concerned you have symptoms that are a result of
exposure to algal toxins, contact your health care provider or
call the Illinois Poison Center at 1-800-222-1222. If your pet
experiences symptoms that may be a result of exposure, contact
your veterinarian immediately.
Residents who plan to recreate in, on, or near Illinois rivers,
lakes or streams are advised to avoid contact with water that:
• looks like spilled, green or blue-green paint
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• has surface scums, mats, or films
• is discolored or has green-colored streaks
• has greenish globs suspended in the water below the surface
Do not let pets drink from or swim in water with any of the above
characteristics.
If you or your pet have come into contact with water you suspect may
have a bloom of blue-green algae, rinse off with clean, fresh water
as soon as possible. Do not let pets lick scum from their fur. With
all activities that may involve contact with lake or stream water,
wash your hands before eating.
For additional information about harmful algal blooms, please visit:
Illinois EPA:
https://www2.illinois.gov/epa/topics/water-quality/monitoring/algal-bloom/Pages/default.aspx
Illinois Department of Public Health:
http://www.dph.illinois.gov/topics-services/environmental-health-protection/toxicology/habs
[Illinois Office of Communication and
Information]
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