Lake Lillinonah Treatment Notification
We have received the following message from The Pond & Lakes Connection and wanted to proactively notify our membership:
Lake Lillinonah will be treated for Eurasian Milfoil and hydrilla on June 23rd, 2026. The aquatic herbicide(s) to be used are: Sonar for the Control of Hydrilla at the Bridgewater town launch, and Tribune and/or ProcellaCOR for the control of Eurasian Milfoil at Upper Lillinonah in Bridgewater. There are no labeled restrictions for swimming, fishing, boating or water contact. In the treatment areas, irrigation can commence on 6/30, livestock water on 6/24 and drinking for consumption on 6/26. Please reach out to The Pond and Lake Connection if you have any questions.
Treatment will be done at and north of Poison Ivy Island to the Lover’s Leap Gorge for the control of invasive Hydrilla. One small section on the Shepaug River will also be treated for Hydrilla.
Barkwood Falls Cove and the shoreline of Lillinonah Drive will be treated for invasive Eurasian milfoil.
If you have any questions regarding this treatment, please contact The Pond & Lakes Connection at 203-885-0184
MARK YOUR CALENDARS!
We have some exciting events and volunteer opportunities coming up this season – hope to see you soon!
DINE-AROUND:
Saturday, July 11th
23rd ANNIVERSARY PARTY:
Thursday, August 13th
Please click the event links above or visit our News page for more details
2026 NEWSLETTER
We are delighted to share our annual Friends of the Lake newsletter!
Click here to read up on all the exciting things happening with the lake & our organization!
INVASIVE SPECIES: HYDRILLA
A new aquatic invasive species, hydrilla, has been found in Lake Lillinonah.
Click here to learn more about hydrilla and what you can do to help prevent its spread.
