EPA TRI Facility · Other
Isomedix Operations Inc.
Northborough, MA · Parent: Steris Corp
- Total releases
- 115 lbs
- Chemicals reported
- 1
- Carcinogens
- 1
- Primary pathway
- Air Releases
AIR Form-R mix
Isomedix Operations Inc.: how the 160 lbs splits
160 lbs across all reported pathways
- Air Releases 160 lbs 100.0%
Isomedix Operations Inc.'s 160 lbs Form-R total is AIR - air releases is 100.0% of the bar. Off-site transfers stay separate from air, water, and land releases. Leading chemical by pounds: Ethylene oxide.
TRACE volume AIR pathway CARC-HEAVY
Isomedix Operations Inc. is an EPA Toxics Release Inventory reporter in Northborough, MA, in the other sector. It reported 45 lbs of releases across 1 chemical in 2024, and 115 lbs in total across its 2022-2024 reporting years. That ranks 16,400 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Massachusetts's 373 reporting TRI sites, pounds #1 is not chemical-count #1. Isomedix Operations Inc. is pounds #269 and chemical-count #328 at 115 lbs. Solutia Inc leads reported pounds (2.5M lbs) at 9 chemicals (chemical-count #10). Astro Chemicals Inc leads chemical count at 17 chemicals (5.9K lbs, pounds #154). Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Sartorius Stedim 450 Dlb; Repligen Corp; Dupont Electronic Materials International LLC; Safety-Kleen Systems Marlborough (mrb). Similar-scale Other peers outside Massachusetts: Sterigenics US Llc-Atlanta Ga Facility; Veritiv Operating Co - CA515 West Sacramento; Sterigenics-Los Angeles Facility; Uscg Station Bodega Bay. Other Steris Corp sites in this extract: Steris Corp; Steris Corp St Louis Operations; Medivators; Steris Distribution Center. Largest disclosed chemicals by pounds: Ethylene oxide.
Isomedix Operations Inc. stamps TRACE volume with a dominant AIR pathway (100.0% air releases) across 1 chemical · 1 carcinogen-classified. Cumulative Form-R extract: 115 lbs (2022–2024). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Sterigenics US Llc-Atlanta Ga Facility and Veritiv Operating Co - CA515 West Sacramento.
Isomedix Operations Inc. vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
115 lbs 37th percentile higher than 37% 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
Isomedix Operations Inc. in the Other sector extract
Among the 632 Other facilities in this database, Isomedix Operations Inc. reports the 482nd-largest volume (115 lbs). Scale peers outside Massachusetts include Sterigenics US Llc-Atlanta Ga Facility and Veritiv Operating Co - CA515 West Sacramento.
Sector rank uses reported TRI pounds only. Share callouts need ≥1,000 lbs so tiny totals cannot mint a false signal.
Isomedix Operations Inc. Form-R facts
Compare this facility
See how Isomedix Operations Inc. stacks up against nearby facilities and the typical reporter.
94% less than the comparison
About the same as 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 Isomedix Operations Inc. releases toxic chemicals into the environment. Total: 160 lbs.
Emissions Trend Summary
From 2022 to 2024, total releases decreased by 28% (62 lbs to 45 lbs).
Isomedix Operations Inc.: annual Form-R pounds
TRACE site · AIR pathway · TRI years 2022–2024
- 2022 0
- 2023 0
- 2024 0
What this shows Isomedix Operations Inc. year-over-year reported totals (decreased by 28% from 2022 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: Ethylene oxide.
| Year | Total | Chemicals |
|---|---|---|
| 2022 | 62 lbs | 1 |
| 2023 | 53 lbs | 1 |
| 2024 | 45 lbs | 1 |
Chemical Releases
Aggregated across all reporting years (2022–2024). 1 of 1 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Ethylene oxide | 160 lbs | Carcinogen |
Isomedix Operations Inc. · AIR-pathway site
Nearest TRI Facilities to Isomedix Operations Inc.
Closest other reporters in Massachusetts - including Sartorius Stedim 450 Dlb, Repligen Corp, Dupont Electronic Materials International LLC, ordered by distance.
Showing 8 of 372 other reporting facilities in Massachusetts.
Similar Other Facilities
Other Other facilities with similar total release volumes (±80%), outside Massachusetts - e.g. Sterigenics US Llc-Atlanta Ga Facility, Veritiv Operating Co - CA515 West Sacramento, Sterigenics-Los Angeles Facility.
Other Steris Corp Facilities
Same-parent TRI sites ranked by reported releases - including Steris Corp, Steris Corp St Louis Operations, Medivators.
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 Ethylene oxide; nearby reporters include Sartorius Stedim 450 Dlb. Isomedix Operations Inc. stamps TRACE volume · AIR pathway · CARC-HEAVY 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 Isomedix Operations Inc. TRI extract (TRACE · AIR · CARC-HEAVY · lead Ethylene oxide) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Isomedix Operations Inc. totals are self-reported EPCRA §313 estimates for Northborough, MA, latest year 2023. Form-R rows span 2022–2024 (3 years). NAICS 561910 · Other. 0.0% of Worcester TRI pounds in this extract. Nearest ABS peer: Haynes Wire Co (Δ 0 lbs). Pounds ≠ exposure.
Isomedix Operations Inc. stamps TRACE volume · AIR pathway · CARC-HEAVY · lead Ethylene oxide. 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