Doncasters INC Precision Castings New England
Total reported releases 50 lb fell meaningfully year over year (-17%). Total releases concentrations have more than halved since 2010.
835 POQUONNOCK RD, Groton, Connecticut · 331512 · Primary Metals · operated by Doncasters LTD
Notable Signals
No notable signals at this facility for the current reporting year. See chemicals and equity context below for the full picture.
What This Facility Releases
Cobalt
Cobalt concentrations have more than halved since 2010.
Nickel
Nickel concentrations have more than halved since 2010.
Chromium
Chromium concentrations have more than halved since 2010.
Around this facility Population Characteristics
New London County County, CT (no Census block groups within 3 miles — falling back to containing county).
Demographic shares, national-percentile rankings (PM2.5, ozone, NO₂, diesel particulate, lead-paint risk, NPL/RMP/TSDF/NPDES proximity, drinking-water non-compliance), and EJ disparity scores will render here once the EJScreen-clone ingest completes for this geography. Why this section matters →
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.