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This project will bring public water to about 1,100 residents living along the western edge of Boxborough, where drinking water wells are contaminated with PFAS and road salt
Construction Update
Updated August 18th, 2025
Water Main Installation & Well Project Progressing
Water Mains
The water main from the Whitcomb Avenue Water Treatment Plant to Boxborough has been nearly completed.
- Paving on Whitcomb Avenue is now scheduled for September. (It was originally set for mid-August.)
- Water main installation on Mass Ave./Route 111 in Boxborough is to begin August 25.
Trumbull Well Development
This project also includes the development of a new well. The Trumbull Well on Taylor Street will be installed in late summer, early fall of 2025. Building of the pump house will start shortly after.
This project cost is estimated at about $19.1 million in total. The estimated $10 million to extend the water main to Boxborough will be paid for by the new customers who benefit from the project.
The Trumbull Well will supply about a quarter-million gallons of water per day, of which less than 25 percent will be needed to meet the demand of the Boxborough customers and 75 percent of the water will go toward Littleton’s needs.Â
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The cost of developing the well is being split, with 24.5 percent (or about $2 million) to be paid for by Boxborough ratepayers through a betterment charge. The balance of about $6.9 million is to be paid for by all ratepayers, through regular rates and debt service, as it benefits the entire system.
Because this well is being developed to address PFAS contamination, the project qualified for a no-interest state loan. This will save all ratepayers a lot of money.
Paving Whitcomb Avenue
Paving on Whitcomb Avenue, from Taylor Street to the town line, is now scheduled for September. (While previously scheduled for August 11, construction and paving schedules are subject to change.)
It will be a permanent mill and overlay. Please note, we are required to wait at least three months, and sometimes longer, before applying the final layer of pavement over a trench patch to allow for settling. This reduces the potential for voids forming under the pavement which can result in potholes. We also make sure the new pipes are sealed tight and working properly so we don’t have to dig up new pavement to fix a problem.
Forum
Thank you for joining us for a public forum held on January 15th, at 7pm. You can watch the replay here.Â
For more information, watch the replay of the Boxborough Water Extension forum from July 26.
Watch the first Boxborough Water Line Extension Project Information Session from January 2023.
