While sources confirm the Chesapeake Bay watershed spans six states and Washington D.C., the standard list of these states (typically DE, MD, PA, VA, NY, and WV) is mentioned, but the claim specifically highlights New York. However, the evidence confirms the 'six states' part, but the phrasing 'including New York' is technically true though the watershed is primarily associated with the Mid-Atlantic. More importantly, the evidence confirms it spans six states, but the claim's focus is narrow.