Nalco Co – Emissions Trend
Ellwood City, PA · 2019–2024 · Parent: Ecolab Inc
This page assembles 6 consecutive years of EPA Toxics Release Inventory Form R filings for Nalco Co, 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 839 in 2019 and closed at 72 in 2024 – a decrease of 91.4% 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 Zinc compounds at 8.3K, followed by Ammonia at 2.5K.
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
- Nalco Co's total reported releases fell from 4.0 thousand lb in 2022 to 2.5 thousand lb in 2023, based on EPA TRI filings.
- Nalco Co's air releases fell from 1.5 thousand lb in 2022 to 15 lb in 2023, based on EPA TRI filings.
- Nalco Co's off-site transfers rose from 2.5 thousand lb in 2022 to 2.5 thousand lb in 2023, based on EPA TRI filings.
Total Releases by Category
Year-over-Year Comparison
| Year | Total | Chemicals | YoY Change |
|---|---|---|---|
| 2019 | 839 lbs | 13 | - |
| 2020 | 891 lbs | 14 | +6.1% |
| 2021 | 4.0K lbs | 10 | +344.1% |
| 2022 | 4.0K lbs | 11 | +1.3% |
| 2023 | 2.5K lbs | 11 | -37.2% |
| 2024 | 72 lbs | 10 | -97.1% |
Top Chemicals by Year
| Chemical | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | Total |
|---|---|---|---|---|---|---|---|
| Zinc compounds | 60 | 60 | 3.2K | 2.5K | 2.5K | 0 | 8.3K |
| Ammonia | 665 | 665 | 500 | 651 | - | - | 2.5K |
| Acrylic acid | 114 | 165 | 243 | 857 | 14 | 72 | 1.5K |
| Ethylene glycol | 0 | 0 | 0 | 13 | 0 | 0 | 15 |
| Acrylamide | - | - | 0 | - | 0 | 0 | 0 |
| Certain glycol ethers | 0 | 0 | - | - | 0 | - | 0 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0 | 0 | 0 | - | 0 | 0 | 0 |
| Nonylphenol Ethoxylates | - | 0 | - | - | - | - | 0 |
| Dazomet | - | - | - | - | - | - | 0 |
| Potassium dimethyldithiocarbamate | - | - | - | - | - | - | 0 |
| Sodium nitrite | - | - | - | - | - | - | 0 |
| Sodium dimethyldithiocarbamate | - | - | - | - | - | - | 0 |
| Ethylenebisdithiocarbamic acid, salts and esters | - | - | - | - | - | - | 0 |
| Nabam | - | - | - | - | - | - | 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
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Read our methodology - how this data is sourced, computed, and verified.