Long Island Sound Partnership Nitrogen Reduction Infrastructure Grant
Long Island Sound Partnership Nitrogen Reduction Infrastructure Grant supports Massachusetts municipalities and sewer authorities with treatment plant assessments and upgrades to reduce nitrogen pollution.
Funder: Executive Office of Energy and Environmental Affairs
Due Dates: October 7, 2026 (Pre-application meeting) | October 13, 2026 (Questions) | November 3, 2026 (Answers and scheduled amendment deadline) | December 21, 2026 (Application) | September 30, 2031 (Funded work completion)
Funding Amounts: Up to $7.2 million total; Track One: $500,000–$6.5 million per application; Track Two: $50,000–$250,000 per facility; through September 30, 2031
Summary: Supports Massachusetts wastewater treatment plant assessments and upgrades that reduce nitrogen discharge into the Long Island Sound watershed.
Key Information: Limited to eligible publicly owned treatment works and regional planning agencies applying on their behalf; collection systems and outfalls are ineligible.
Description
Administered by the Massachusetts Department of Environmental Protection (MassDEP), this program funds nitrogen reduction infrastructure at Massachusetts wastewater treatment plants in the Connecticut, Housatonic, and Thames River watersheds. Funding comes from the U.S. Environmental Protection Agency through the Infrastructure Investment and Jobs Act and the Long Island Sound Partnership.
The grant supports facility assessments and optimization upgrades, including project development, personnel, planning, design, equipment purchases, and construction. It aims to reduce nitrogen pollution affecting Long Island Sound while defraying treatment plant upgrade costs for municipalities and sewer authorities. Preference goes to shovel-ready projects, projects in advanced design and permitting, and projects located in or directly benefiting Disadvantaged Communities.
