Metro West Water Supply Tunnel
The MetroWest Water Supply Tunnel (MWWST) is an advanced underground aqueduct that supplies potable water to residents of much of Greater Boston. It is part of the Massachusetts Water Resources Authority (MWRA) water supply system.
This aqueduct starts at the John J. Carroll Water Treatment Plant in Marlborough, Massachusetts and ends at an MWRA terminal in Weston, Massachusetts. It is about 17.6 miles (28.3 km) long (28.3 km) and is constructed far below ground level, mostly in bedrock. It includes several vertical risers called shafts, lined with steel, used to make connections throughout the system. It is built underneath portions of Marlborough, Southborough, Framingham, Wayland, and Weston Massachusetts, with a wye intersection 235 feet (71.6 m) below the Massachusetts Turnpike toll booths at State route 128.
Read more about Metro West Water Supply Tunnel: History, Redundancy, Technical Data, Maintenance
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