In the mid-19th century, the Pond was privately owned and home to a flourishing
ice-harvesting industry, with ice shipped as far as
Europe,
China, and
India. The horse-drawn
Charlestown Branch Railroad expanded to connect the Fresh Pond icehouses of
Frederic Tudor,
Addison Gage, and
Nathaniel J. Wyeth with several wharves in Charlestown. The first ice shipment was in December 1841. The railroad would later get steam locomotives and become part of the
Fitchburg Railroad. In 1856, a private company began supplying its customers with drinking water from the Pond. In 1865 the business came under city ownership. By the end of the century the Pond and the land surrounding it was entirely city-owned, and an elaborate public water supply 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 roughly 1 kilometer west of Fresh Pond to a higher elevation at the underground Payson Park Reservoir in neighboring
Belmont. From there it flows back to Cambridge, with gravity providing the necessary downhill pressure to distribute drinking water to residents and businesses. == Footnotes ==