system had been developed. Fresh Pond is part of the overall Cambridge water system. Its water is fed to the pond via an aqueduct from the Hobbs Brook and Stony Brook Reservoirs, located in Lexington, Lincoln, Waltham and Weston, Massachusetts. After purification at the Walter J. Sullivan Water Treatment Facility adjacent to Fresh Pond, the water is pumped upwards to the underground Payson Park Reservoir in Belmont. From there it flows back to Cambridge, with gravity providing the pressure to distribute drinking water to residents and businesses. Footnotes General references City of Cambridge Water Department Fresh Pond history Weightman, Gavin (2003). The Frozen-Water Trade: A True Story. New York: Hyperion Seaburg, Carl and Alan (2003). The Ice King: Frederic Tudor and His Circle. Boston: Massachusetts Historical Society External links WikiSatellite view of Fresh Pond at WikiMapia Neighborhoods in Cambridge, Massachusetts Reservoirs in Massachusetts Lakes of Middlesex County, Massachusetts Buildings and structures in Cambridge, Massachusetts Ice trade Protected areas of Middlesex County, Massachusetts