MWRA Deer Island Wastewater Treatment Plant, Egg-Shaped Digesters

Winthrop, MA


Buchart Horn/BASCO Associates
General Dynamics Corporation



The Deer Island Wastewater Treatment Plant, which is owned and operated by Massachusetts Water Resources Authority, removes pollutants from wastewater that originates in homes and businesses in the greater Boston area. Buchart-Horn, the Electric Boat Division (EBDiv) of General Dynamics, and Perini retained SGH to develop the seismic design for egg-shaped digester tanks and their supporting concrete structures.