District of Columbia records
Common Watersnake in District of Columbia
HarmlessNerodia sipedon

Yes. The Common Watersnake has been recorded in 1 District of Columbia county. It is non-venomous (harmless). Heavy banded or blotched body, round pupils, and a narrow head — unlike the cottonmouth's broad, blocky head.
District of Columbia counties with Common Watersnake records
1 listedSee the full Common Watersnake profile or all snakes in District of Columbia.