EPA TRI Facility · Computers and Electronic Products
Onsemi
Hopewell Junction, NY · Parent: Semiconductor Components Industries LLC
- Total releases
- 3.2M lbs
- Chemicals reported
- 14
- Carcinogens
- 1
- Primary pathway
- Water Discharges
WATER Form-R mix
Onsemi: how the 3.8M lbs splits
3.8M lbs across all reported pathways
- Water Discharges 3.5M lbs 92.8%
- Air Releases 164.3K lbs 4.3%
- Off-site Transfers 109.0K lbs 2.9%
- Land Disposal 1 lbs <0.1%
Onsemi's 3.8M lbs Form-R total is WATER - water discharges is 92.8% of the bar. Next segment: air releases at 4.3%. Leading chemical by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution).
Carcinogen-classified pounds vs other reported pounds
Same cumulative TRI total as above, split by EPA/IARC carcinogen classification on each chemical: pounds share, not chemical count. Classification is not a site health-risk score.
HEAVY volume WATER pathway TRACE-CARC
Onsemi is an EPA Toxics Release Inventory reporter in Hopewell Junction, NY, in the computers and electronic products sector. It reported 566.6K lbs of releases across 12 chemicals in 2024, and 3.2M lbs in total across its 2019-2024 reporting years. That ranks 600 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In New York's 581 reporting TRI sites, pounds #1 is not chemical-count #1. Onsemi is pounds #5 and chemical-count #9 at 3.2M lbs. St Lawrence Zinc Co Balmat 4 Mine & Mill leads reported pounds (9.7M lbs) at 10 chemicals (chemical-count #40). Norlite LLC leads chemical count at 93 chemicals (28.3K lbs, pounds #152). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Pentagon Technologies; Emagin Corp; Chemprene LLC; Roseton Generating LLC. Similar-scale Computers and Electronic Products peers outside New York: Hubbell Power Systems Inc.; Samsung Austin Semiconductor; Siltronic Corp; Neptune Technology Group Inc. Other Semiconductor Components Industries LLC sites in this extract: Onsemi. Largest disclosed chemicals by pounds: Nitrate compounds (water dissociable; reportable only when in aqueous solution); Copper And Copper Compounds; Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size); Ammonia.
Onsemi stamps HEAVY volume with a dominant WATER pathway (92.8% water discharges) across 14 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 3.2M lbs (2019–2024). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Hubbell Power Systems Inc. and Samsung Austin Semiconductor.
Onsemi vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
3.2M lbs Top 2% higher than 98% of 25,986 reporting TRI facilities
Each bar is a $1M-wide band; taller bars hold more reporting TRI facilities. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
Onsemi inside Dutchess's TRI pounds
Among the 760 Computers and Electronic Products facilities in this database, Onsemi reports the 1st-largest volume, placing it in the top 0.1% of its sector. This one site accounts for 98.7% of every pound reported in Dutchess. Its reported volume is concentrated rather than spread: Nitrate compounds (water dissociable; reportable only when in aqueous solution) alone is 92.7% of the total. Scale peers outside New York include Hubbell Power Systems Inc. and Samsung Austin Semiconductor.
County-dominant here means ≥25% of Dutchess's reported pounds (3.3M lbs county total). Shares only print when the site reports ≥1,000 lbs.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Onsemi's total reported releases fell from 672.1 thousand lb in 2022 to 536.6 thousand lb in 2023, based on EPA TRI filings.
- Onsemi's water releases fell from 620.2 thousand lb in 2022 to 487.0 thousand lb in 2023, based on EPA TRI filings.
- Onsemi's off-site transfers fell from 27.0 thousand lb in 2022 to 22.5 thousand lb in 2023, based on EPA TRI filings.
- Onsemi's air releases rose from 24.9 thousand lb in 2022 to 27.0 thousand lb in 2023, based on EPA TRI filings.
Onsemi Form-R facts
Compare this facility
See how Onsemi stacks up against nearby facilities and the typical reporter.
2256.0× more than the comparison
7.0× more than the comparison
Comparison reflects reported pounds and chemical counts, not toxicity or health risk. Averages cover facilities reporting any release.
How does this facility release toxic chemicals?
How Onsemi releases toxic chemicals into the environment. Total: 3.8M lbs.
Emissions Trend Summary
From 2019 to 2024, total releases decreased by 20% (709.8K lbs to 566.6K lbs).
Onsemi: annual Form-R pounds
HEAVY site · WATER pathway · TRI years 2019–2024
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
What this shows Onsemi year-over-year reported totals (decreased by 20% from 2019 to 2024). TRI figures are self-reported estimates and can swing with production, waste handling, and reporting changes, not only with controls. Lead chemical in the extract: Nitrate compounds (water dissociable; reportable only when in aqueous solution).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 709.8K lbs | 12 |
| 2020 | 690.6K lbs | 11 |
| 2021 | 617.1K lbs | 11 |
| 2022 | 672.1K lbs | 12 |
| 2023 | 536.6K lbs | 12 |
| 2024 | 566.6K lbs | 12 |
Chemical Releases
Aggregated across all reporting years (2019–2024). 1 of 15 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 3.5M lbs | - |
| Copper And Copper Compounds | 87.5K lbs | - |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 63.8K lbs | - |
| Ammonia | 32.3K lbs | - |
| Ethylene glycol | 26.6K lbs | - |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 22.9K lbs | - |
| Copper compounds | 22.7K lbs | - |
| Hydrogen fluoride | 9.4K lbs | - |
| Nitric acid | 7.4K lbs | - |
| N-Methyl-2-pyrrolidone | 2.3K lbs | - |
| Ozone | 163 lbs | - |
| Lead And Lead Compounds | 147 lbs | - |
| Fluorine | 117 lbs | - |
| Polycyclic aromatic compounds | 9 lbs | Carcinogen |
| Benzo[g,h,i]perylene | 0 lbs | - |
Onsemi · WATER-pathway site
Nearest TRI Facilities to Onsemi
Closest other reporters in New York - including Pentagon Technologies, Emagin Corp, Chemprene LLC, ordered by distance.
Showing 8 of 580 other reporting facilities in New York.
Similar Computers and Electronic Products Facilities
Other Computers and Electronic Products facilities with similar total release volumes (±80%), outside New York - e.g. Hubbell Power Systems Inc., Samsung Austin Semiconductor, Siltronic Corp.
Compare beyond New York
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Onsemi on cumulative reported pounds (3.2M lbs) and distinct chemical count (14). Release-pound peers include Amalgamated Sugar Co Nampa, Koch Fertilizer Beatrice,llc, Dupont Specialty Products USA LLC - Spruance Plant. Chemical-count peers include Shell New Haven Terminal, Chambers Cogeneration L.P., Avantor Performance Materials. Neighborhoods are forced disjoint so each axis surfaces a different set of sites.
Similar reported release pounds
Nearest out-of-state reporters (≥1,000 lbs) by absolute TRI pounds, not same-industry or same-county neighbors.
- Amalgamated Sugar Co Nampa Nampa, ID · Food 3.2M lbs reported
- Koch Fertilizer Beatrice,llc Beatrice, NE · Chemicals 3.2M lbs reported
- Dupont Specialty Products USA LLC - Spruance Plant North Chesterfield, VA · Chemicals 3.2M lbs reported
- Wm Bolthouse Farms Inc Bakersfield, CA · Food 3.2M lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
- Shell New Haven Terminal New Haven, CT · Petroleum Bulk Terminals 14 chemicals
- Chambers Cogeneration L.P. Penns Grove, NJ · Electric Utilities 14 chemicals
- Avantor Performance Materials Phillipsburg, NJ · Chemicals 14 chemicals
- Cheswick Plant Environmental Redevelopment Group LLC Springdale, PA · Electric Utilities 14 chemicals
Other Semiconductor Components Industries LLC Facilities
Same-parent TRI sites ranked by reported releases - including Onsemi.
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
On this page the largest disclosed chemicals include Nitrate compounds (water dissociable; reportable only when in aqueous solution), Copper And Copper Compounds, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Ammonia; nearby reporters include Pentagon Technologies. Onsemi stamps HEAVY volume · WATER pathway · TRACE-CARC carcinogen-lbs on this Form-R extract. Totals are self-reported estimates under EPCRA §313, not measured stack emissions or a health-risk score.
Use and verify this record
This Onsemi TRI extract (HEAVY · WATER · TRACE-CARC · lead Nitrate compounds (water dissociable; reportable only when in aqueous solution)) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Onsemi totals are self-reported EPCRA §313 estimates for Hopewell Junction, NY, latest year 2023. Form-R rows span 2019–2024 (6 years). NAICS 334413 · Computers and Electronic Products. 98.7% of Dutchess TRI pounds in this extract. Nearest ABS peer: Amalgamated Sugar Co Nampa (Δ 4.2K lbs). Pounds ≠ exposure.
Onsemi stamps HEAVY volume · WATER pathway · TRACE-CARC · lead Nitrate compounds (water dissociable; reportable only when in aqueous solution). PlainEnviro renders this EPA Form-R extract from its pipeline; no figure is typed in by an editor. Corrections: editorial policy.
All federal data sources used on this page
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program reference - how chemicals and reported releases are counted. epa.gov
- EPA Facility Registry Service - facility location and identity. epa.gov
- EPA ECHO - regulatory and compliance context. epa.gov
- EPA Envirofacts - the EPA data warehouse exposing these datasets. epa.gov