♦ Carcinogen
1,4-Dioxane
CAS # 123-91-1
3,933,399 lbs total reported releases across all facilities and years.
Facilities listed below reported releases of this chemical to the EPA Toxic Release Inventory (TRI). Quantities are self-reported annual totals in pounds, broken out by release pathway. Click any facility name for its full compliance profile.
National Release Trend (2015–2024)
+279% overall
| Year | Total Released (lbs) | Reporting Facilities | vs Prior Year |
|---|---|---|---|
| 2015 | 227,272 | 50 | — |
| 2016 | 135,844 | 53 | -40% |
| 2017 | 155,477 | 56 | +14% |
| 2018 | 184,545 | 56 | +19% |
| 2019 | 47,638 | 21 | -74% |
| 2020 | 527,162 | 55 | +1007% |
| 2021 | 651,429 | 56 | +24% |
| 2022 | 746,352 | 59 | +15% |
| 2023 | 395,853 | 52 | -47% |
| 2024 | 861,828 | 54 | +118% |
Top Releasing Industries
| Industry Sector | Total Released (lbs) | Facilities |
|---|---|---|
| Administrative and Support and Waste Management | 2,646,043 | 19 |
| Manufacturing | 1,287,334 | 76 |
| Public Administration | 20 | 1 |
| Wholesale Trade | 2 | 4 |
Worst Water Discharge Exceedances
Facilities that exceeded their permit limits for this chemical in discharge monitoring reports
| Facility | Reported | Limit | Exceedance | Period |
|---|---|---|---|---|
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.86 mg/L | 0.00 | +244,186% | Apr 2025 |
|
62ND AVENUE IMPROVEMENTS
DENVER, CO
|
0.38 mg/L | 0.00 | +108,929% | Dec 2024 |
|
APG POLYTECH, LLC, APPLE GROVE PLANT
APPLE GROVE, WV
|
69.63 mg/L | 0.15 | +45,711% | Oct 2023 |
|
APG POLYTECH, LLC, APPLE GROVE PLANT
APPLE GROVE, WV
|
45.30 mg/L | 0.15 | +29,703% | Sep 2023 |
|
APG POLYTECH, LLC, APPLE GROVE PLANT
APPLE GROVE, WV
|
94.70 mg/L | 0.35 | +27,349% | Sep 2023 |
|
APG POLYTECH, LLC, APPLE GROVE PLANT
APPLE GROVE, WV
|
80.50 mg/L | 0.35 | +23,233% | Oct 2023 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +23,032% | Sep 2024 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +21,919% | Oct 2024 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +21,485% | Nov 2024 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +21,183% | Dec 2024 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +20,730% | Jan 2025 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +20,655% | Jul 2025 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +20,560% | Aug 2025 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +20,466% | Oct 2025 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +20,372% | Feb 2025 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +20,051% | Jun 2025 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +17,881% | May 2025 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +17,749% | Mar 2025 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +15,202% | Apr 2025 |
|
LARIMER ENERGY FACILITY
FORT COLLINS, CO
|
0.01 mg/L | 0.00 | +14,749% | Apr 2025 |
| Facility | Location | Year | Total (lbs) | Air | Water |
|---|---|---|---|---|---|
| GATE PRECAST CONCRETE | KISSIMMEE, FL | 2024 | — | — | — |
| TEDIA COMPANY INC (1409030683) | FAIRFIELD, OH | 2024 | — | — | — |
| BASF HOUSTON POLYURETHANE | HOUSTON, TX | 2024 | — | — | — |
| ROSS INCINERATION SERVICES (GRAFTON, OH) | GRAFTON, OH | 2024 | — | — | — |
| RHODIA INC | BALTIMORE, MD | 2024 | — | — | — |
| US CHEMICAL | WATERTOWN, WI | 2024 | — | — | — |
| UNION PROCESSING SYSTEMS, LLC | CONROE, TX | 2024 | 377,580 | — | — |
| (VEOLIA) ELEMENTAL ENVIRONMENTAL SOLUTIONS LLC - GUM SPRINGS PLANT | ARKADELPHIA, AR | 2024 | 254,769 | 0 | — |
| UNION CARBIDE CORP - ST CHARLES PLANT | HAHNVILLE, LA | 2024 | 87,575 | 61,924 | 25,651 |
| ALPEK POLYESTER USA, LLC | GASTON, SC | 2024 | 29,331 | 5,950 | 23,381 |
| TEXAS MOLECULAR - DEER PARK SERVICES | DEER PARK, TX | 2024 | 28,841 | — | — |
| EASTMAN CHEMICAL CO | KINGSPORT, TN | 2024 | 18,151 | 6,849 | 11,236 |
| APG POLYTECH, LLC, APPLE GROVE PLANT | APPLE GROVE, WV | 2024 | 15,877 | 401 | 15,476 |
| STEPAN CO | ELWOOD, IL | 2024 | 14,934 | 14,933 | 1 |
| VICKERY ENVIRONMENTAL INC | VICKERY, OH | 2024 | 11,723 | — | — |
| DAK AMERICAS LLC | FAYETTEVILLE, NC | 2024 | 6,943 | 446 | 6,497 |
| BRASKEM AMERICA SEADRIFT OPERATIONS | SEADRIFT, TX | 2024 | 5,308 | 4,855 | 450 |
| AURIGA POLYMERS INC. | SPARTANBURG, SC | 2024 | 1,821 | 839 | 982 |
| INVISTA WILMINGTON | WILMINGTON, NC | 2024 | 1,802 | 1,800 | 2 |
| WELLMAN OF MISSISSIPPI INC | BAY SAINT LOUIS, MS | 2024 | 1,439 | 1,439 | — |
| NAN YA PLASTICS CORPS | LAKE CITY, SC | 2024 | 1,192 | 1,192 | — |
| INDORAMA DECATUR SITE | DECATUR, AL | 2024 | 1,058 | 1,058 | — |
| EASTMAN CHEMICAL CO SC OPERATIONS | GASTON, SC | 2024 | 730 | 730 | — |
| STARPET INCORPORATED | ASHEBORO, NC | 2024 | 612 | 612 | — |
| HOUSTON PLANT | HOUSTON, TX | 2024 | 328 | 328 | — |
| ECO SERVICES OPERATIONS CORP | HAMMOND, IN | 2024 | 298 | 298 | — |
| LEXMARK INTERNATIONAL INC | LONGMONT, CO | 2024 | 255 | 255 | — |
| INDORAMA VENTURES OXIDES - PORT NECHES OPERATIONS | PORT NECHES, TX | 2024 | 250 | 250 | — |
| TRADEBE TREATMENT & RECYCLING OF TENNESSEE LLC | MILLINGTON, TN | 2024 | 167 | 167 | — |
| GIANT CEMENT COMPANY | HARLEYVILLE, SC | 2024 | 137 | 137 | — |
| E. R. CARPENTER L.P. - POWELL PLANT | PASADENA, TX | 2024 | 126 | 126 | — |
| COIM USA | PAULSBORO, NJ | 2024 | 106 | 106 | — |
| LACAMAS LABORATORIES INC | PORTLAND, OR | 2024 | 93 | 93 | — |
| CLEAN HARBORS ENVIRONMENTAL SERVICES INC | KIMBALL, NE | 2024 | 78 | 78 | — |
| CEDARBURG PHARMACEUTICALS INC | GRAFTON, WI | 2024 | 76 | 76 | — |
| GREENCASTLE WDF FACILITY - BUZZI UNICEM USA | GREENCASTLE, IN | 2024 | 53 | 53 | — |
| CURIA NEW YORK INC | RENSSELAER, NY | 2024 | 41 | 41 | — |
| MITSUBISHI CHEMICAL AMERICA, INC. | GREER, SC | 2024 | 38 | 38 | — |
| EVONIKCORPORATION | MILTON, WI | 2024 | 25 | 25 | — |
| PHENOMENEX | TORRANCE, CA | 2024 | 12 | 12 | — |
| SYSTECH ENVIRONMENTAL | FREDONIA, KS | 2024 | 11 | 11 | — |
| VEOLIA ES TECHNICAL SOLUTIONS | BEAUMONT, TX | 2024 | 10 | 10 | — |
| US ARMY, PICATINNY ARSENAL | WHARTON, NJ | 2024 | 10 | 10 | — |
| ALDRICH CHEMICAL CO LLC - SHEBOYGAN FALLS FACILITY | SHEBOYGAN FALLS, WI | 2024 | 8 | 8 | — |
| CURIA GLOBAL | SPRINGFIELD, MO | 2024 | 6 | 6 | — |
| EVONIK DEGUSSA CORP TIPPECANOE LABORATORIES | LAFAYETTE, IN | 2024 | 6 | 6 | — |
| CLEAN HARBORS EL DORADO LLC | EL DORADO, AR | 2024 | 2 | 2 | — |
| BUCKMAN LABORATORIES INC | CADET, MO | 2024 | 2 | 2 | — |
| VEOLIA ES TECHNICAL SOLUTIONS LLC | SAUGET, IL | 2024 | 2 | 2 | — |
| CENTRAL PLAINS CEMENT COMPANY | TULSA, OK | 2024 | 1 | 1 | — |