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LAKE QUASSAPAUG ASSOCIATION: Keep Lake Quassapaug Clean! Please do NOT use toxic herbicides.

This petition made change with 2,292 supporters!


If you use Lake Quassapaug, you need to know that the quality of the water is about to change.  170 gallons of the toxic herbicide, 2, 4-D is going to be put directly in the lake this month.  

The Lake Quassapaug Association received a permit on May 20th from the DEEP to treat the invasive milfoil, which is located in the Tyler Cove area in Lake Quassapaug, with liquid 2, 4-D.  You should be concerned, because 2, 4-D is a controversial herbicide that has links to causing non-Hodgkin’s lymphoma.  Its use in an aquatic environment comes with greater risk than with soil/land uses and comes with many unstudied/unknown effects, specifically on children.  What is known about the herbicide is that when you are exposed to 2, 4-D when using sunscreen or insect repellent the absorption rate of the toxin increases significantly, one study showed a 39% increase and another jumped to 89%.  According to the Sierra Club of Canada, 2, 4-D will remain in water supplies for 20 to 200 days. Health Canada recently re-evaluated the use of 2, 4-D a year ago, and determined that “all products containing the diethanolamine (DEA) form of 2, 4-D and products for aquatic uses are being phased out because the risks exceed current health and environmental standards or there was a lack of adequate data for assessment.”  The DEEP’s permit states that two private wells located on Tyler’s Cove Road must be tested for 2, 4-D between 7 and 14 days after the application of the 170 gallons of the herbicide and that if there is 2,4-D present the Lake Quassapaug Association is responsible for the remediation of drinking water supplies.  The permit also indicates that they have to notify its members 72 hours prior to the application and place signs and public notices at lakes with public access.  

Listed on the warning label of a bottle of anime form 2, 4-D it specifically states:  “Environmental Hazards - This pesticide is toxic to fish and aquatic invertebrates. Do not apply directly to water, to areas where surface water is present, or to intertidal areas below the mean high water mark. Drift and runoff may be hazardous to aquatic organisms in water adjacent to treated areas. Do not contaminate water when disposing of equipment wash waters or rinsate.”

 There are other ways to treat milfoil organically that should be explored.   And don’t be fooled, this will not be a single treatment, one-time event.  Multiple treatments of 2, 4-D will be needed to treat the milfoil.  

Further information should be requested from The Lake Quassapaug Association, The DEEP or The First Selectman of Middlebury. The Lake Quassapaug Association's board of directors and contact information can be found at lakequassapaugassociation.org.  

Speak up and be heard on this issue if you care about the water you swim in!  Please sign this permit letting the Lake Quassapaug Association and Town of Middlebury, CT that this is not acceptable for the health of our children and families. 



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