St Lawrence Zinc CO Balmat 4 Mine & Mill
Total reported releases 2.0M lb fell modestly year over year (-8%). Total releases concentrations are up 11% since 2018.
408 SYLVIA LAKE RD, Gouverneur, New York · 212230 · Metal Mining
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
Zinc compounds
Zinc compounds concentrations have fallen 12% since 2018.
Lead And Lead Compounds
Lead And Lead Compounds concentrations have more than doubled since 2018.
Cadmium And Cadmium Compounds
Cadmium And Cadmium Compounds concentrations have more than doubled since 2018.
Copper And Copper Compounds
Copper And Copper Compounds concentrations have fallen 34% since 2018.
Mercury And Mercury Compounds
Mercury And Mercury Compounds concentrations have fallen 35% since 2018.
Cyanide compounds
Cyanide compounds concentrations have more than doubled since 2010.
Who Lives Next To This Facility
Within 3 miles of this facility (1 Census block groups, population-weighted demographics): a population of 1,334. Why we surface this →
Low-income
People of color
Under age 5
Over age 64
Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 3-mile buffer around this facility (from USEPA-clone/EJAM-open blockgroupstats). Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
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.