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Committee backs $4.33 million low‑interest loan to build stormwater projects aimed at reducing phosphorus
Summary
Newton’s finance committee authorized acceptance of a $4,329,664 low‑interest loan from the Massachusetts Clean Water Trust to construct stormwater treatment measures at three parks to reduce phosphorus discharges to the Charles River watershed, with projected reductions between 55 and 66 pounds annually across the projects.
The Newton City Finance Committee on June 8 voted to accept a $4,329,664 low‑interest loan from the Massachusetts Clean Water Trust to design and build stormwater control projects aimed at reducing phosphorus runoff to the Charles River watershed.
Staff said the projects — under consideration at Cavatar/Cab Dog Park, Cold Spring Park and Bobby Gracland Park — were selected after technical evaluation of phosphorus reduction potential, constructibility and cost effectiveness. Consultants estimate the combined projects could remove approximately 55 to 66 pounds of phosphorus per year, with site‑level estimates of roughly 17 pounds at the subsurface infiltration system, 29–40 pounds for a rain garden/drainage improvements at Cold Spring Park, and about nine pounds from treatment of drainage feeding Bobby Gracland Park.
The projects remain subject to permitting, public engagement and coordination with parks and conservation staff. The presenter noted that Article 97 (land‑protection) considerations were being reviewed and that, at present, the team does not expect Article 97 to constrain the designs.
The loan carries a reduced interest rate (1.5%) available to qualifying communities; staff told the committee city council authorization must be completed by June 30, 2026 to preserve eligibility for this funding. Committee members asked about maintenance needs, whether structures would be visible in park space, and how consultants estimate phosphorus removal; staff said the stormwater team will perform maintenance and that consultants use accepted modeling and site testing to estimate reductions.
The committee approved the loan acceptance 7–0. Next steps include public engagement with park user groups, further design, permitting and coordination with the law department as designs develop.
