ANNUAL REPORT
The report provides a summary of the key highlights and accomplishments from Fiscal Year 2025. On behalf of myself and the entire Board of Trustees, I would like to extend our heartfelt gratitude and sincere appreciation to our partners in the City and the State for their ongoing support and collaboration. Their sustained commitment enables us to continue the essential work of preserving the foundations of Boston’s important historic structures and to make a lasting, meaningful contribution to the overall resilience, well-being, and sustainability of the City of Boston.
Christian Simonelli
Executive Director
~ Next Meeting: Thursday January 15th, 2026 at the Lenox Hotel with a virtual option via Zoom
~ Next Meeting: Thursday January 15th, 2026 at the Lenox Hotel with a virtual option via Zoom
Meeting agendas are posted in the Public Notices section on the City of Boston website.
PLANNING DEPARTMENT APPROVES UPDATES TO GROUNDWATER CONSERVATION OVERLAY DISTRICT
Preserving the Foundations of Boston’s Historic Structures
The Boston Groundwater Trust (BGwT) was established in 1986 by the Boston City Council with the primary objective of monitoring groundwater levels in specific city sections. The focus areas are those where the stability of building foundations, which are supported by wood pilings, is at risk due to low groundwater levels. The accompanying video (viewed best in desktop mode) visually represents a typical row house in a filled land area in Boston. These houses are supported on wood piles capped with granite blocks, showcasing the traditional foundation method used from the 1800’s to the early 1920’s. It's evident that when the groundwater level remains above the tops of the wood piles, they can maintain their strength and effectively bear the weight of the building. However, a decline in the groundwater level leads to the exposure of wood piles to air, initiating a process of decay that compromises the stability of the building, ultimately posing safety hazards.
“Together we can make Boston the greenest City in the country and one whose future is as bright as our foundations are strong .”
— Honorable Mayor Michelle Wu, City of Boston
WOOD PILE VIDEO SERIES
Wood Piles: Preserving Boston's First Deep Foundations
A look into how Boston became the City it is today and why the Boston Groundwater Trust monitors groundwater levels.
Wood Piles: Preserving and Maintaining Groundwater Levels
A look into how the Boston Groundwater Trust helps preserve and maintain groundwater levels.
Wood Piles: The Process of Underpinning
A look into the labor-intensive process of underpinning a building with decayed wood piles.