The Town of Wilmington takes regular water samples at Green Mountain Beach on Lake Raponda to ensure that the water is suitable for swimming.

E. coli in water is measured as the number of bacteria found in 100 milliliters (mls) of water. In Vermont, when the test result at a public swimming area is 235 E. coli/100mls or less, it means that the water is considered suitable for swimming. A result greater than 235 E. coli/100mls means that the water is not considered suitable for swimming and the area would be closed until it tests in the safe range.  It takes about a week to receive the test results.

LINK to More Information at the State of VT

Water Testing Logs
Green Mountain Beach

VT DEPT HEALTH STANDARD: 235/100ML or below is suitable for swimming

2017
Test Date    E-Coli Test Result (parts/100ML)

8/9/17                0
8/2/17                7
7/26/17              0
7/19/17              0
7/12/17              0
7/5/17                5
6/28/17              0
6/21/17              0
6/14/17              0
6/7/17                0
5/31/17              3

 

2016 
Test Date    E-Coli Test Result (parts/100ML)

8/31/16             0       Last test for the year
8/24/16             0
8/17/16             0
8/10/16             0
8/03/16             0
7/27/16             3
7/20/16             3
7/13/16             5
7/06/16             5
6/30/16             5
6/22/16             2
6/15/16             0
6/08/16             0

 

2015 
Test Date    E-Coli Test Result (parts/100ML)

9/2/15               7   Last test for the year
8/26/15             8
8/19/15             0
8/12/15             0
8/5/15               6
7/29/15             0
7/22/15             1
7/15/15             2
7/08/15             3
7/01/15             3
6/24/15             2
6/17/15             3
6/10/15             0
6/03/15             0
5/26/15             0

 

2014
Date of Test   E-Coli Test Result (parts/100ML)

5/29/14            3
6/05/14            0
6/12/14            0
6/19/14            3
6/26/14            0
7/02/14            7
7/09/14          16
7/16/14            3
7/23/14            0
7/30/14          22
8/06/14           2
8/13/14           4
8/20/14           4
8/27/14           0     (Last test for 2014)

 

2013 
Date of Test     E-Coli Test Result (parts/100ML)

5/30/13           0
6/ 5 /13           0
6/12/13           0
6/19/13           2
6/26/13         20
7/02/13          2
7/10/13        42
7/17/13        32
7/24/13        26
7/31/13         2
8/07/13         6
8/14/13         1
8/21/13         7
8/29/13        24 (This is the last test for 2013)

For additional Information on Swim Water Testing from Vermont Department of Health: http://healthvermont.gov/enviro/water/swimwater.aspx