Methyl tert-butyl ether
CAS # 1634-04-4
5,323,412 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)
-89% overall
| Year | Total Released (lbs) | Reporting Facilities | vs Prior Year |
|---|---|---|---|
| 2015 | 1,858,579 | 148 | — |
| 2016 | 1,726,073 | 144 | -7% |
| 2017 | 230,269 | 141 | -87% |
| 2018 | 219,611 | 135 | -5% |
| 2019 | 192,505 | 70 | -12% |
| 2020 | 233,030 | 129 | +21% |
| 2021 | 244,710 | 130 | +5% |
| 2022 | 215,310 | 130 | -12% |
| 2023 | 203,486 | 121 | -5% |
| 2024 | 199,839 | 109 | -2% |
Top Releasing Industries
| Industry Sector | Total Released (lbs) | Facilities |
|---|---|---|
| Administrative and Support and Waste Management | 3,480,522 | 24 |
| Manufacturing | 1,666,581 | 102 |
| Wholesale Trade | 136,716 | 94 |
| Professional, Scientific, and Technical Services | 20,379 | 2 |
| Utilities | 7,973 | 1 |
| Transportation and Warehousing | 7,070 | 1 |
| Mining, Quarrying, and Oil and Gas Extraction | 2,552 | 4 |
| Public Administration | 683 | 3 |
Worst Water Discharge Exceedances
Facilities that exceeded their permit limits for this chemical in discharge monitoring reports
| Facility | Reported | Limit | Exceedance | Period |
|---|---|---|---|---|
|
TRES AMIGOS CONVENIENCE STORE
COLEMAN, TX
|
0.01 mg/L | 0.15 | +99,999% | Nov 2016 |
|
TRES AMIGOS CONVENIENCE STORE
COLEMAN, TX
|
0.01 mg/L | 0.15 | +99,999% | Nov 2016 |
|
SALT LAKE INTERNATIONAL AIRPORT
SALT LAKE CITY, UT
|
2.00 mg/L | 0.20 | +900% | Mar 2016 |
|
SALT LAKE INTERNATIONAL AIRPORT
SALT LAKE CITY, UT
|
2.00 mg/L | 0.20 | +900% | Apr 2016 |
|
TRIDENT LOGISTICS CENTER
REVERE, MA
|
0.15 mg/L | 0.02 | +650% | Jan 2026 |
|
TERRIBLE HERBST # 225
LAS VEGAS, NV
|
0.12 mg/L | 0.02 | +500% | Jun 2017 |
|
REBEL STATION #8
LAS VEGAS, NV
|
0.10 mg/L | 0.02 | +400% | Jun 2024 |
|
CENTRAL DENVER RECREATION CENTER
DENVER, CO
|
0.10 mg/L | 0.02 | +393% | Mar 2016 |
|
TRIDENT LOGISTICS CENTER
REVERE, MA
|
0.09 mg/L | 0.02 | +350% | Dec 2025 |
|
COLONIAL PIPELINE COMPANY
GREENSBORO, NC
|
0.08 mg/L | 0.02 | +312% | Feb 2023 |
|
TRIDENT LOGISTICS CENTER
REVERE, MA
|
0.08 mg/L | 0.02 | +300% | Nov 2025 |
|
THE WATERHOLE
OVERTON, NV
|
0.05 mg/L | 0.02 | +145% | Mar 2018 |
|
COLONIAL PIPELINE COMPANY
GREENSBORO, NC
|
0.05 mg/L | 0.02 | +137% | Feb 2022 |
|
TRIDENT LOGISTICS CENTER
REVERE, MA
|
0.15 mg/L | 0.07 | +114% | Jan 2026 |
|
DANSVILLE TRAVEL CENTER
DANSVILLE, NY
|
0.01 mg/L | 0.01 | +100% | Jun 2021 |
|
DANSVILLE TRAVEL CENTER
DANSVILLE, NY
|
0.01 mg/L | 0.01 | +100% | Aug 2021 |
|
DANSVILLE TRAVEL CENTER
DANSVILLE, NY
|
0.01 mg/L | 0.01 | +100% | May 2021 |
|
PORT AUTHORITY OF NY & NJ - JFK INTERNATIONAL AIRPORT
JAMAICA, NY
|
0.10 mg/L | 0.05 | +100% | Mar 2016 |
|
DANSVILLE TRAVEL CENTER
DANSVILLE, NY
|
0.01 mg/L | 0.01 | +100% | Jul 2021 |
|
VELVIN OIL
HENDERSON, TX
|
0.27 mg/L | 0.15 | +78% | Oct 2019 |
| Facility | Location | Year | Total (lbs) | Air | Water |
|---|---|---|---|---|---|
| CITYSERVICEVALCON, LLC GREENACRES BULK FACILITY | SPOKANE VALLEY, WA | 2024 | — | — | — |
| PURVIS BROS INC/MARS | MARS, PA | 2024 | — | — | — |
| LACC LLC US - ETHYLENE & DERIVATIVES PLANT | WESTLAKE, LA | 2024 | — | — | — |
| BEN TAYLOR INC | SHELBY, MT | 2024 | — | — | — |
| LION COPOLYMER | BATON ROUGE, LA | 2024 | — | — | — |
| WARING OIL CO MOBILE | IRVINGTON, AL | 2024 | — | — | — |
| WARING OIL CO | VICKSBURG, MS | 2024 | — | — | — |
| CITYSERVICEVALCON OLDTOWN BULK PLANT | OLDTOWN, ID | 2024 | — | — | — |
| CITYSERVICEVALCON, LLC - BILLINGS | BILLINGS, MT | 2024 | — | — | — |
| SUPERIOR OIL COMPANY, INC. | INDIANAPOLIS, IN | 2024 | — | — | — |
| CITYSERVICEVALCON LLC | KALISPELL, MT | 2024 | — | — | — |
| QPI WARSAW BULK PLANT | WARSAW, VA | 2024 | — | — | — |
| JANKOVICH CO SAN PEDRO MARINE | SAN PEDRO, CA | 2024 | — | — | — |
| DUTCH HARBOR | DUTCH HARBOR, AK | 2024 | — | — | — |
| CAMPBELL OIL - CLINTON | CLINTON, NC | 2024 | — | — | — |
| LINDSEY CAMPBELL OIL CO | LUMBERTON, NC | 2024 | — | — | — |
| MIA JET-A FUELING FACILITY | MIAMI, FL | 2024 | — | — | — |
| CAMPBELL OIL & GAS CO. | WHITEVILLE, NC | 2024 | — | — | — |
| CAMPBELL OIL & GAS CO. | ELIZABETHTOWN, NC | 2024 | — | — | — |
| WARING OIL CO | JACKSON, MS | 2024 | — | — | — |
| WARING OIL CO | LOUISVILLE, MS | 2024 | — | — | — |
| BRENNTAG GREAT LAKES LLC | SAINT PAUL, MN | 2024 | — | — | — |
| WESTERN PETROLEUM INC | PARAMOUNT, CA | 2024 | — | — | — |
| LYONDELL CHEMICAL CHANNELVIEW | CHANNELVIEW, TX | 2024 | 32,921 | 31,577 | — |
| INDORAMA VENTURES OXIDES - PORT NECHES OPERATIONS | PORT NECHES, TX | 2024 | 27,870 | 27,870 | — |
| TEXAS PETROCHEMICALS | HOUSTON, TX | 2024 | 18,336 | 18,336 | — |
| EXXONMOBIL BEAUMONT REFINERY | BEAUMONT, TX | 2024 | 17,200 | 17,200 | — |
| VP RACING FUELS INC | SAN ANTONIO, TX | 2024 | 12,423 | 12,423 | — |
| BASF AGRICULTURAL SOLUTIONS US LLC, BEAUMONT PLANT | BEAUMONT, TX | 2024 | 11,523 | — | — |
| JAYHAWK FINE CHEMICALS CORP. | GALENA, KS | 2024 | 7,324 | 7,324 | — |
| BAYER CROPSCIENCE - KANSAS CITY FACILITY | KANSAS CITY, MO | 2024 | 6,550 | 2,550 | 4,000 |
| CAMBREX CHARLES CITY, INC | CHARLES CITY, IA | 2024 | 6,008 | 6,004 | 4 |
| MONUMENT CHEMICAL LLC - HOUSTON FACILITY | HOUSTON, TX | 2024 | 5,351 | 5,295 | 56 |
| CORDENPHARMA COLORADO, INC. | BOULDER, CO | 2024 | 4,900 | 4,900 | — |
| ALDRICH CHEMICAL CO LLC - SHEBOYGAN FALLS FACILITY | SHEBOYGAN FALLS, WI | 2024 | 4,888 | 4,888 | — |
| TEDIA COMPANY INC (1409030683) | FAIRFIELD, OH | 2024 | 3,551 | 3,551 | — |
| CARGILL - VITAMIN E | EDDYVILLE, IA | 2024 | 3,443 | 3,443 | — |
| PUMA ENERGY PUERTO RICO INC | GUAYNABO, PR | 2024 | 2,889 | 2,889 | — |
| CURIA GLOBAL | SPRINGFIELD, MO | 2024 | 2,536 | 2,536 | — |
| MERCK SHARP & DOHME CORP | RAHWAY, NJ | 2024 | 2,148 | 2,148 | — |
| NORTH REGIONAL TREATMENT PLANT | BEAUMONT, TX | 2024 | 1,989 | 1,687 | 302 |
| ELI LILLY AND COMPANY-LILLY TECH CTR | INDIANAPOLIS, IN | 2024 | 1,744 | 1,744 | — |
| EXXONMOBIL BATON ROUGE CHEMICAL PLANT | BATON ROUGE, LA | 2024 | 1,650 | 1,650 | — |
| EVONIK DEGUSSA CORP TIPPECANOE LABORATORIES | LAFAYETTE, IN | 2024 | 1,543 | 1,543 | — |
| SCOTT PETROLEUM | GREENWOOD, MS | 2024 | 1,259 | 1,259 | — |
| EXXONMOBIL BATON ROUGE REFINERY | BATON ROUGE, LA | 2024 | 1,190 | 1,190 | — |
| LACAMAS LABORATORIES, INC. | ALBANY, OR | 2024 | 1,169 | 1,169 | — |
| POLYPEPTIDE LABORATORIES INC. | TORRANCE, CA | 2024 | 1,162 | 1,162 | — |
| VP RACING FUELS INC. | TERRE HAUTE, IN | 2024 | 1,006 | 1,006 | — |
| CORDEN PHARMA - STERLING DRIVE | BOULDER, CO | 2024 | 1,000 | 1,000 | — |