Toxic Release Inventory data for 2024. 21 facilities reported releasing 1, 4-dichlorobenzene.
| Facility | State | On-site (lb) |
|---|---|---|
| Fortron Industries Llc Wilmington | North Carolina | 19.4k |
| Solvay Specialty Polymers Usa Borger | Texas | 6.9k |
| Elemental Environmental Solutions Llc Arkadelphia | Arkansas | 4.6k |
| Clean Harbors Environmental Services Inc Kimball | Nebraska | 379 |
| Us Ecology Texas Inc Robstown | Texas | 291 |
| Willert Home Products Saint Louis | Missouri | 250 |
| Westlake Vinyls Inc Calvert City | Kentucky | 129 |
| Fresh Products Llc Perrysburg | Ohio | 125 |
| Rubicon Llc Geismar | Louisiana | 59 |
| Shintech Plaquemine Plant Plaquemine | Louisiana | 26 |
| Dap Global Inc. Pacific | Missouri | 19 |
| Covestro Llc Baytown | Texas | 8 |
| Buzzi Unicem Usa-Cape Girardeau Cape Girardeau | Missouri | 6 |
| Veolia Es Technical Solutions Llc Port Arthur Facility Beaumont | Texas | 3 |
| Clean Harbors Deer Park Llc La Porte | Texas | 2 |
| Clean Harbors El Dorado Llc El Dorado | Arkansas | 1 |
| Clean Harbors Aragonite Llc Grantsville | Utah | 1 |
| Heritage Thermal Services East Liverpool | Ohio | 0 |
| Arcwood Environmental - Orange Llc Orange | Texas | 0 |
| Norlite Llc Cohoes | New York | 0 |
| Ross Incineration Services Inc Grafton | Ohio | 0 |
The Toxic Release Inventory (TRI) tracks how much of each listed chemical U.S. industrial facilities release into the environment each year. EPA requires facilities in certain industry sectors that manufacture, process, or otherwise use TRI-listed chemicals above threshold amounts to report annually. In 2024, 21 facilities reported releasing 1, 4-dichlorobenzene to EPA's TRI program.
Releases are spread across all three environmental pathways: 27.0k lb to air (stack and fugitive emissions), 16 lb to water (surface water discharges), and 5.2k lb to land (landfills, surface impoundments, and land treatment).
TRI data represents reported releases, not measured environmental concentrations. A facility reporting large releases of 1, 4-dichlorobenzene is not necessarily causing harm at those levels — toxicity, exposure pathways, and local conditions all matter. Conversely, small reported amounts of highly toxic chemicals can pose greater risk than large amounts of less toxic ones. TRI is a transparency tool, not a risk assessment.
For health information about specific chemicals, the Agency for Toxic Substances and Disease Registry (ATSDR) publishes toxicological profiles, and EPA's Integrated Risk Information System (IRIS) provides reference doses and cancer classifications.