Domtar Aw LLC Nekoosa Mill – Emissions Trend
Nekoosa, WI · 2019–2023 · Parent: Domtar Corp
This page assembles 5 consecutive years of EPA Toxics Release Inventory Form R filings for Domtar Aw LLC Nekoosa Mill, spanning 2019–2023. 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 327.1K in 2019 and closed at 236.6K in 2023 – a decrease of 27.7% 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 Methanol at 879.5K, followed by Ammonia at 260.1K.
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 paper facility.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Domtar Aw LLC Nekoosa Mill's total reported releases fell from 323.0 thousand lb in 2022 to 236.6 thousand lb in 2023, based on EPA TRI filings.
- Domtar Aw LLC Nekoosa Mill's land releases fell from 4.3 thousand lb in 2022 to 2.5 thousand lb in 2023, based on EPA TRI filings.
- Domtar Aw LLC Nekoosa Mill's water releases fell from 32.3 thousand lb in 2022 to 20.1 thousand lb in 2023, based on EPA TRI filings.
- Domtar Aw LLC Nekoosa Mill's air releases fell from 268.3 thousand lb in 2022 to 198.5 thousand lb in 2023, based on EPA TRI filings.
Total Releases by Category
Year-over-Year Comparison
| Year | Total | Chemicals | YoY Change |
|---|---|---|---|
| 2019 | 327.1K lbs | 13 | - |
| 2020 | 318.9K lbs | 13 | -2.5% |
| 2021 | 320.3K lbs | 13 | +0.4% |
| 2022 | 323.0K lbs | 14 | +0.9% |
| 2023 | 236.6K lbs | 14 | -26.7% |
Top Chemicals by Year
| Chemical | 2019 | 2020 | 2021 | 2022 | 2023 | Total |
|---|---|---|---|---|---|---|
| Methanol | 193.4K | 178.8K | 185.6K | 194.9K | 126.9K | 879.5K |
| Ammonia | 52.0K | 58.0K | 57.1K | 59.1K | 33.9K | 260.1K |
| Hydrogen sulfide | 21.5K | 20.5K | 20.8K | 21.4K | 41.9K | 126.1K |
| Manganese And Manganese Compounds | - | - | 44.5K | 33.5K | 24.2K | 102.2K |
| Manganese compounds | 50.5K | 49.1K | - | - | - | 99.6K |
| Acetaldehyde | 4.5K | 4.3K | 5.1K | 5.0K | 3.6K | 22.5K |
| Phenol | 3.7K | 3.6K | 3.7K | 3.7K | 3.0K | 17.7K |
| Chlorine dioxide | 329 | 2.6K | 2.4K | 2.5K | 230 | 8.1K |
| Copper And Copper Compounds | - | - | - | 1.9K | 2.0K | 4.0K |
| Lead compounds | 967 | 1.6K | - | - | - | 2.6K |
| Lead And Lead Compounds | - | - | 570 | 418 | 862 | 1.9K |
| Chlorine | 119 | 446 | 454 | 470 | 50 | 1.5K |
| Catechol | 34 | 35 | 35 | 35 | 35 | 174 |
| Dioxin and dioxin-like compounds | 0 | 0 | 0 | 0 | 0 | 0 |
| Ethylene glycol | - | - | - | - | - | 0 |
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 Domtar Aw LLC Nekoosa Mill getting cleaner or dirtier? ▼
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Read our methodology - how this data is sourced, computed, and verified.