Illinois Department of Natural Resources

FOR IMMEDIATE RELEASE
July 15, 2010

IDNR Amends Algae Advisory for Clinton Lake

Water samples show low to no toxicity

SPRINGFIELD – The Illinois Department of Natural Resources (IDNR) has amended an algae advisory for parts of Clinton Lake after sampling results revealed little to no toxicity from recent algae blooms. The Illinois Environmental Protection Agency (IEPA) took four water samples from the lake last week for potential blue-green algae blooms. Two samples detected no toxicity, while two other samples detected very low levels of toxicity.

Test results show low levels of the type of algae that could cause a concern for public health. However, IDNR recommends that the public avoid recreational contact in water bodies that contain algae blooms.

IDNR continues to caution against recreating in waters that contain any algal scum. Tests show the microcystins in the samples collected by IEPA to be at low levels. This means that there was low risk of toxicity from this algae.

The IDNR and IEPA are continuing to review sampling data collected at Clinton Lake, but test results received so far show low levels of the type of algae that would cause a concern for public health.