MWRA has recently completed two new water treatment plants: The John J. Carroll Water Treatment Plant, in Marlborough (2005) and The Quabbin Water Treatment
Beginning its operations in 2005, the facility treats drinking water for 2.3 million people in 41 metropolitan Boston communities, from Arlington to Boston,
The main component of this service system is the Freedom District Water Treatment Plant. This facility draws raw water from the Liberty Reservoir and is
