Department of Natural Resources announces latest results at Prairie Lee Lake

For more information: 573-751-1010
Volume 37-311 For Immediate Release: Sept. 8, 2009

Jefferson City, Mo. – The latest preliminary results drawn from Prairie Lee Lake on Monday showed decreasing levels of E. coli bacteria according to the Missouri Department of Natural Resources.  Prairie Lee Lake has been closed to swimming since Friday morning because of the release of several thousand gallons of untreated sewage into the lake late Thursday and early Friday. 

Preliminary results from Monday’s testing ranged from 10.9 colonies per 100 milliliters to 107.6 colonies per 100 milliliters.  The state standard for maximum acceptable levels of E. coli is 235 colonies per 100 milliliters of water for a single sample and 126 colonies per 100 milliliters of water for a geometric mean for a number of samples for bodies of water such as Prairie Lee Lake and Lake Jacomo.

The latest results continue to show that E. coli bacteria levels in Lake Jacomo are well within the acceptable range.  Preliminary results ranged from less than 1 colonies per 100 milliliters to 9.7 colonies per 100 milliliters.

The complete sampling results are available on the Department’s website: http://www.dnr.mo.gov/jacomo-prairielee.htm.

To report an environmental emergency, including sewage overflows, please contact the Department of Natural Resources' spill line at 573-634-2436. For more information contact the Department at 800-361-4827 or 573-751-3443, or visit the department's Web page at www.dnr.mo.gov.

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