Manitowoc Public Utilities – Emissions Trend

Manitowoc, WI · 2019–2023 · Parent: City of Manitowoc

This page assembles 5 consecutive years of EPA Toxics Release Inventory Form R filings for Manitowoc Public Utilities, 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 575.9K in 2019 and closed at 381.7K in 2023 – a decrease of 33.7% 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 Vanadium compounds at 641.2K, followed by Barium And Barium Compounds at 492.5K.

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 electric utilities facility.

Overall Trend
↓ Decreasing (-33.7%)
2019 Total
575.9K lbs
2023 Total
381.7K lbs

Total Releases by Category

Air
Water
Land
Offsite Transfer
0176.0K351.9K527.9K703.8K879.8K 20192020202120222023 Pounds Released

Year-over-Year Comparison

Year Total Chemicals YoY Change
2019 575.9K lbs 9 -
2020 458.1K lbs 9 -20.5%
2021 879.8K lbs 11 +92.1%
2022 684.8K lbs 12 -22.2%
2023 381.7K lbs 10 -44.3%

Top Chemicals by Year

Chemical 20192020202120222023 Total
Vanadium compounds 112.4K 103.6K 169.0K 152.1K 104.2K 641.2K
Barium And Barium Compounds - - 283.2K 209.3K - 492.5K
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) 189.8K 142.7K - - 102.6K 435.2K
Manganese And Manganese Compounds - - 210.3K 156.0K - 366.3K
Manganese compounds 140.6K 106.1K - - 88.4K 335.1K
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) - - 93.5K 68.9K - 162.4K
Chromium compounds (except for chromite ore mined in the Transvaal Region) 62.6K 46.9K - - 39.8K 149.3K
Nickel compounds 48.6K 41.4K - - 31.6K 121.6K
Nickel And Nickel Compounds - - 68.0K 48.8K - 116.7K
Zinc compounds - - 35.4K 26.8K - 62.3K
Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) 13.1K 10.8K 7.5K 11.3K 10.3K 53.0K
Lead And Lead Compounds - - 12.8K 9.5K - 22.3K
Lead compounds 8.6K 6.4K - - 4.6K 19.7K
Ammonia - - - 1.8K - 1.8K
Polycyclic aromatic compounds 101 100 159 193 118 671

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 Manitowoc Public Utilities getting cleaner or dirtier?
Based on EPA TRI data from 2019–2023, Manitowoc Public Utilities's total toxic releases have decreased by approximately 34%.
What time period does this trend data cover?
This page shows 5 years of EPA Toxic Release Inventory data from 2019–2023. Release quantities are self-reported estimates filed annually by the facility.