Connecticut records
Common Watersnake in Connecticut
HarmlessNerodia sipedon

Yes. The Common Watersnake has been recorded in 8 Connecticut counties. It is non-venomous (harmless). Heavy banded or blotched body, round pupils, and a narrow head — unlike the cottonmouth's broad, blocky head.
Connecticut counties with Common Watersnake records
8 listedSee the full Common Watersnake profile or all snakes in Connecticut.