July, 2026
Aquarion Water Company (AWC) has been working on a long-range plan to strengthen the resiliency of the existing water system in the Fairfield County area. AWC is currently working with AECOM, a consulting engineering firm, to design a new 36-inch diameter water main. The initial phase of the work is located in Fairfield and Westport.
The pipeline design and construction is divided into phases. This particular phase begins in Fairfield at the Hemlocks Reservoir on Black Rock Turnpike and proceeds approximately 4.4 miles into Westport to an underground connection at the intersection of Coleytown Road and Easton Road (Connecticut Route 136).
A future phase of work will extend the new 36-inch water main from the location on Coleytown Road to the existing water storage tanks on Belden Hill Road in Wilton.
The proposed route begins at the southern end of the Hemlocks Reservoir on Black Rock Turnpike (CT Route 58) and follows these streets:
- In Fairfield:
- West on Hemlock Road
- North on Burr Street
- West on Aran Hill Road
- North on Congress Street
- West on Longmeadow Road
- South on Redding Road
- West on Catamount Road into Westport
- In Westport:
- Southwest on Easton Road (CT Route 136)
- Ending at the intersection of Coleytown Road and Easton Road
On-Site Tasks During Design
On-site tasks for the design of the pipeline were completed in 2025.
- A topographic survey was completed, and a soil scientist flagged the inland wetlands within the street rights-of-way.
- Soil borings were performed to investigate subsurface conditions after a vacuum excavation crew confirmed there were no existing utilities in the proposed boring locations.
- Test pits were excavated using vacuum methods to provide AECOM access for measuring specific buried utilities of interest.
Now that the on-site investigation tasks are complete, AECOM is currently advancing the design of the new water main.