The Department of Public Works (DPW) manages Southborough's water system. There are three full-time highly dedicated employees that comprise the DPW Water Division. The Water Commissioners are Southborough's Board of Selectmen.

100% of Southborough's water is purchased from the MWRA. The water is fully treated by the MWRA before it reaches one of Southborough's two pumping stations where it is distributed into, and throughout, our water distribution system. Southborough's three water tanks control the water system.