Pontoosuc Lake will be treated with aquatic herbicides on Thursday, June 13 to control invasive and nuisance aquatic vegetation. The entire lake will be closed to all water uses, including, swimming, fishing and boating on the day of treatment.

These activities may resume on Friday, June 14. Use of the lake water for irrigation (i.e. watering lawns, gardens or plants of any kind) is prohibited for five days post treatment.  Printed posters warning of these and other temporary water use restrictions will be posted around the lake shoreline in advance of the treatment.

For more information, please call 413-499-9344.