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Falmouth gets updated Great Pond sewer cost estimate; betterment roughly $17,379 per unit
Summary
At a May 18 Select Board meeting, wastewater staff presented updated costs and a proposed betterment allocation for the Great Pond Phase 1 sewer project: total project cost ~ $49.65 million, estimated betterment per sewer‑equivalent unit (SEU) $17,379 (about $579/SEU/year if paid over 30 years at 0% interest). The board discussed next steps but did not vote on assessments tonight.
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Wastewater officials presented an updated estimate for Falmouth’s Great Pond Phase 1 sewer project at the Select Board meeting on May 18, 2026, describing the method staff used to assign sewer‑equivalent units (SEUs) and the projected cost to property owners.
The town’s wastewater superintendent said the current total project estimate is $49.65 million, down from the earlier $60 million planning figure after lower construction bids and reduced engineering costs. With anticipated State Revolving Fund (SRF) loan forgiveness and other adjustments, the town’s financed portion falls to roughly $39 million, staff said.
The superintendent described the system for assigning SEUs: most single‑family homes, residential condos and multifamily units up to four bedrooms are assigned one SEU; larger multi‑bedroom, apartment and motel units were assigned fractional SEUs per bedroom or by measured water use for commercial properties. Using the finalized parcel list and SEU counts, staff reported 848.25 SEUs in the project service area.
Using that allocation and the portion of the project that will be assessed as a betterment to properties in the service area, the current estimate of the assessment is $17,379 per SEU. The town plans to offer a 30‑year 0% interest repayment option; if a property owner selects that option the average cost per SEU is about $579 per year.
Wastewater Superintendent (summarizing the analysis) said: “The total project cost is almost $50 million…with loan forgiveness the town’s net exposure is reduced, and that yields an estimate of about $17,379 per SEU.” The superintendent noted the numbers are estimates that will be certified at project completion and could fall further if final costs are lower or if the Select Board later decides not to include grinder pumps in the town‑paid portion.
The presentation outlined the schedule and steps that must follow: staff will finalize and map the betterment plan, the Select Board will vote an order of assessment, property owners will be notified by certified mail with the SEU assignment and given an opportunity to choose lump sum or installment payment, and the collector will add the assessment to real estate tax billing once the project is certified (project completion is currently expected in late 2027). Officials said property owners will generally have about a year after notification to connect to the sewer.
Board members pressed staff on affordability and timing. One member urged that the town consider the aggregate tax and fee burden on residents when this assessment arrives alongside other budget pressures; another expressed appreciation that the estimate is lower than the projection released last year. Staff emphasized that after the Select Board votes the order of assessment and the project is complete, the assessment can only decrease (not increase) relative to the certified final costs.
What’s next: staff will finalize the betterment plan, send property‑owner notices, hold an informational meeting for property owners (scheduled for May 20 at the Lawrence School), and return to the Select Board with the order of assessment for formal action when the supporting plans and numbers are final.
Votes and formal outcomes related to the sewer project were not taken tonight; the board did approve interim financing documents with the Massachusetts Clean Water Trust at the meeting (see “Votes at a glance” below).

