Entegris Inc. – Emissions Trend
Chester, PA · 2019–2024 · Parent: Entegris Inc
This page assembles 6 consecutive years of EPA Toxics Release Inventory Form R filings for Entegris Inc., spanning 2019–2024. Each annual total aggregates on-site air emissions, surface-water discharges, land disposal, and off-site transfers reported by the facility under EPCRA Section 313, which requires disclosure whenever a listed chemical is manufactured, processed, or otherwise used above threshold quantities.
Reported releases opened at 150 in 2019 and closed at 3.2K in 2024 – a increase of 2024.9% over the window. The chart below stacks the four TRI release media (air, water, land, off-site) and overlays the yearly total. The top contributor by cumulative mass is Toluene at 183.8K, followed by Methanol at 28.1K.
Because TRI figures are estimated, not metered, year-over-year deltas can reflect methodology revisions, ownership changes, or shifts in what a facility classifies as reportable, not only physical emission changes. Treat the trajectory as a disclosure record, and cross-reference with the EPA Enforcement and Compliance History Online (ECHO) system for the fuller regulatory picture on this chemicals facility.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Entegris Inc.'s total reported releases rose from 557 lb in 2022 to 246.2 thousand lb in 2023, based on EPA TRI filings.
- Entegris Inc.'s off-site transfers rose from 0 lb in 2022 to 245.2 thousand lb in 2023, based on EPA TRI filings.
- Entegris Inc.'s air releases rose from 557 lb in 2022 to 996 lb in 2023, based on EPA TRI filings.
Total Releases by Category
Year-over-Year Comparison
| Year | Total | Chemicals | YoY Change |
|---|---|---|---|
| 2019 | 150 lbs | 5 | - |
| 2020 | 118 lbs | 4 | -21.8% |
| 2021 | 246 lbs | 5 | +109.0% |
| 2022 | 557 lbs | 5 | +126.4% |
| 2023 | 246.2K lbs | 5 | +44093.4% |
| 2024 | 3.2K lbs | 5 | -98.7% |
Top Chemicals by Year
| Chemical | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | Total |
|---|---|---|---|---|---|---|---|
| Toluene | 38 | 34 | 59 | 230 | 181.5K | 1.9K | 183.8K |
| Methanol | 63 | 34 | 91 | 188 | 26.9K | 813 | 28.1K |
| Xylene (mixed isomers) | 1 | 1 | 2 | 8 | 23.6K | 179 | 23.8K |
| n-Hexane | 47 | 49 | 92 | 129 | 14.0K | 232 | 14.5K |
| Ethylbenzene | - | - | - | - | 117 | 45 | 162 |
| N,N-Dimethylformamide | 2 | - | 2 | 2 | - | - | 6 |
About This Data
Trend data is sourced from the EPA Toxic Release Inventory (TRI). Facilities report annually. Release quantities are self-reported estimates. Year-over-year changes may reflect changes in production, pollution control measures, reporting methodology, or chemical thresholds.
A decrease in reported releases does not necessarily indicate improved environmental performance, as it may reflect production cutbacks, facility closures, or changes in reporting requirements. Similarly, increases may reflect expanded production rather than degraded environmental practices.
Frequently Asked Questions
Is Entegris Inc. getting cleaner or dirtier? ▼
What time period does this trend data cover? ▼
Read our methodology - how this data is sourced, computed, and verified.