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Select Board extends wastewater committee charge as members discuss DIF, sites and financing challenges
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Summary
The board extended the wastewater committee’s charge to June 30, 2027 after an extensive update on Route 9 wastewater feasibility, estimated capacity needs (300,000–500,000 gallons/day), site constraints for a leach‑field discharge area (15–20 acres), and financing hurdles for an estimated tens‑of‑millions project.
The Southborough Select Board voted April 28 to extend the charge of its wastewater committee to June 30, 2027 after a lengthy presentation about Route 9 wastewater capacity, technical feasibility and financing options.
The committee presenter summarized a multi‑part feasibility effort that estimated Route 9 would need roughly 300,000 to 500,000 gallons per day of treatment capacity to support anticipated commercial development. The presenter said a new treatment approach would require a ground discharge (leach‑field) area rather than surface‑water discharge and estimated the discharge area alone could require on the order of 15–20 acres; the treatment plant footprint was described as several acres. The presenter compared the scale to a recent Littleton project and described order‑of‑magnitude capital needs in the tens of millions of dollars, noting Littleton’s comparable project was about $50 million.
The update covered multiple financing pathways including district improvement financing (DIF), state revolving funds and a possible mix of grants and loans. The presenter described the DIF concept — creating a geographic DIF area with a baseline assessed value and dedicating a portion of incremental tax revenue to pay project debt — and encouraged the board to begin outreach and communications with neighbors and the planning board. He also said the committee is still working to identify firm sites and complete the engineering and financing plans necessary to secure construction grants.
Board members asked questions about regional capacity and whether neighboring towns (Westborough, Shrewsbury) have spare treatment capacity to accept additional flow. Presenters said neighboring plants currently guard capacity carefully and that regulatory limits on river discharges complicate sharing capacity. The board discussed the risks of asking for design funding before a site is chosen; presenters said some funders require shovel‑ready projects and early design work to qualify.
The board voted to extend the wastewater committee's charge to June 30, 2027 (recorded as a 4–0–1 vote in the meeting). The extension will allow the committee to continue work on site identification, DIF planning and grant‑funding outreach ahead of a potential special town meeting to request design or financing approval.
(Topic introduced by wastewater committee presentation and concluded with a motion to extend the committee charge and related Q&A.)
