Formaldehyde
Formaldehyde at Johns Manville Plant 2 have more than halved since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Johns Manville Plant 2
Total reported releases 54k lb held roughly steady year over year (+2%). Total releases concentrations have more than halved since 2010.
408 PERRY ST, Defiance, Ohio · 327993 · Nonmetallic Mineral Product · operated by Berkshire Hathaway INC
Anomaly engine
Notable Signals
Total reported releases
Total reported releases at Johns Manville Plant 2 have more than halved since 2010 (through 2024).
Ammonia
Ammonia at Johns Manville Plant 2 have more than halved since 2010 (through 2024).
Chemicals reported · most recent year
What This Facility Releases
Ammonia
Ammonia concentrations have more than halved since 2010.
Formaldehyde
Formaldehyde concentrations have more than halved since 2010.
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) concentrations have fallen 34% since 2010.
Zinc compounds
Zinc compounds concentrations have more than halved since 2011.
Chromium compounds (except for chromite ore mined in the Transvaal Region)
Chromium compounds (except for chromite ore mined in the Transvaal Region) concentrations are roughly unchanged from 2023.
Lead compounds
Lead compounds concentrations have fallen 29% since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (14 Census block groups, population-weighted demographics): a population of 13,574. Why we surface this →
33.7%
Low-income
21.0%
People of color
6.3%
Under age 5
21.3%
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.