National Rivet & Manufacturing Co – Emissions Trend
Waupun, WI · 2019–2023
This page assembles 5 consecutive years of EPA Toxics Release Inventory Form R filings for National Rivet & Manufacturing Co, 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 1.6K in 2019 and closed at 267 in 2023 – a decrease of 83.5% 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 Copper at 3.5K, followed by Nickel at 804.
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 fabricated metals facility.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- National Rivet & Manufacturing Co's total reported releases fell from 1.2 thousand lb in 2022 to 267 lb in 2023, based on EPA TRI filings.
- National Rivet & Manufacturing Co's air releases fell from 41 lb in 2022 to 0 lb in 2023, based on EPA TRI filings.
- National Rivet & Manufacturing Co's off-site transfers fell from 1.2 thousand lb in 2022 to 267 lb in 2023, based on EPA TRI filings.
- National Rivet & Manufacturing Co's chemicals reported fell from 4 in 2022 to 3 in 2023, based on EPA TRI filings.
Total Releases by Category
Year-over-Year Comparison
| Year | Total | Chemicals | YoY Change |
|---|---|---|---|
| 2019 | 1.6K lbs | 4 | - |
| 2020 | 1.1K lbs | 4 | -29.9% |
| 2021 | 888 lbs | 4 | -21.9% |
| 2022 | 1.2K lbs | 4 | +34.1% |
| 2023 | 267 lbs | 3 | -77.5% |
Top Chemicals by Year
| Chemical | 2019 | 2020 | 2021 | 2022 | 2023 | Total |
|---|---|---|---|---|---|---|
| Copper | 1.1K | 775 | 605 | 816 | 172 | 3.5K |
| Nickel | 271 | 181 | 141 | 191 | 20 | 804 |
| Chromium | 208 | 143 | 101 | 143 | 75 | 670 |
| Nitric acid | 38 | 38 | 41 | 41 | - | 158 |
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 National Rivet & Manufacturing Co getting cleaner or dirtier? ▼
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Read our methodology - how this data is sourced, computed, and verified.