Bacteria sampling in Sloans Lake is conducted weekly from late May through September at four sample locations.   The state's water quality guidance for bacteria is based on E. coli concentrations which are measured in "colony forming units" (cfu) per 100 milliliters (ml).   The advisory level that DEH follows is 235 cfu/100ml. 

 

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The most recent sample results include the following:

 

 

 

Results in red indicate values that exceed the advisory level of 235 cfu/100ml.

 

Results from all of 2008

Sampling for the 2008 recreation season commenced May 15th.  

 

 

 

 

Elevated bacteria levels may occur at any time and may cause illness. 

 
What if bacteria levels exceed the state advisory?

 

When E. coli levels exceed the state guidance level of 235 cfu/100ml, there is an elevated risk of sickness as a result of water intake.  Typical symptoms include nausea and gastrointestinal issues. 

 

When the advisory level is exceeded, City personnel will update the yellow informational sign at the boat dock with a red cautionary version.  This diamond shaped advisory informs recreationist that recent findings indicate elevated risk based on the most recently measured bacteria levels.  The sign will be replaced with the yellow information version when monitoring results indicate bacteria concentrations are below the state advisory level.

 

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