Mercury
CAS # 7439-97-6
560,967 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)
-76% overall
| Year | Total Released (lbs) | Reporting Facilities | vs Prior Year |
|---|---|---|---|
| 2015 | 87,539 | 401 | — |
| 2016 | 128,614 | 379 | +47% |
| 2017 | 74,011 | 387 | -42% |
| 2018 | 69,878 | 373 | -6% |
| 2019 | 39,613 | 186 | -43% |
| 2020 | 35,927 | 350 | -9% |
| 2021 | 37,039 | 329 | +3% |
| 2022 | 39,062 | 357 | +5% |
| 2023 | 28,661 | 342 | -27% |
| 2024 | 20,623 | 329 | -28% |
Top Releasing Industries
| Industry Sector | Total Released (lbs) | Facilities |
|---|---|---|
| Real Estate and Rental and Leasing | 0 | 1 |
| Retail Trade | 0 | 1 |
| Administrative and Support and Waste Management | 368,188 | 74 |
| Mining, Quarrying, and Oil and Gas Extraction | 71,893 | 35 |
| Manufacturing | 67,058 | 541 |
| Utilities | 31,891 | 40 |
| Public Administration | 21,751 | 13 |
| Professional, Scientific, and Technical Services | 1 | 7 |
Worst Water Discharge Exceedances
Facilities that exceeded their permit limits for this chemical in discharge monitoring reports
| Facility | Reported | Limit | Exceedance | Period |
|---|---|---|---|---|
|
CPU RIVER ROAD GENERATING FACILITY
VANCOUVER, WA
|
0.00 mg/L | 0.00 | +2,147,483,650% | Dec 2025 |
|
RED CLIFF BAND WWTF
BAYFIELD, WI
|
0.73 kg/d | 0.00 | +66,642,100% | Mar 2016 |
|
LAGRANGE WWTP
LAGRANGE, IN
|
5.50 kg/d | 0.00 | +60,549,900% | Feb 2022 |
|
WALNUT RIDGE WW TREATMENT PLNT
WALNUT RIDGE, AR
|
38.48 kg/d | 0.00 | +60,548,328% | Feb 2024 |
|
RED CLIFF BAND WWTF
BAYFIELD, WI
|
0.73 kg/d | 0.00 | +45,685,432% | Mar 2016 |
|
LAGRANGE WWTP
LAGRANGE, IN
|
5.50 kg/d | 0.00 | +24,219,900% | Feb 2022 |
|
LAGRANGE WWTP
LAGRANGE, IN
|
1.59 kg/d | 0.00 | +17,499,900% | Apr 2022 |
|
RED CLIFF BAND WWTF
BAYFIELD, WI
|
0.18 kg/d | 0.00 | +16,660,450% | Jan 2015 |
|
WALNUT RIDGE WW TREATMENT PLNT
WALNUT RIDGE, AR
|
9.50 kg/d | 0.00 | +14,942,757% | Aug 2025 |
|
RED CLIFF BAND WWTF
BAYFIELD, WI
|
0.18 kg/d | 0.00 | +11,421,284% | Jan 2015 |
|
LAGRANGE WWTP
LAGRANGE, IN
|
1.59 kg/d | 0.00 | +6,999,900% | Apr 2022 |
|
HOMER WWTP
HOMER, LA
|
7.26 kg/d | 0.00 | +5,333,233% | Jun 2024 |
|
WALNUT RIDGE WW TREATMENT PLNT
WALNUT RIDGE, AR
|
1.42 kg/d | 0.00 | +2,235,614% | May 2025 |
|
WALNUT RIDGE WW TREATMENT PLNT
WALNUT RIDGE, AR
|
1.06 kg/d | 0.00 | +1,671,329% | Apr 2025 |
|
WALNUT RIDGE WW TREATMENT PLNT
WALNUT RIDGE, AR
|
0.88 kg/d | 0.00 | +1,385,614% | Jul 2025 |
|
TAPIA WRF
CALABASAS, CA
|
31.99 kg/d | 0.00 | +1,381,724% | Mar 2020 |
|
WALNUT RIDGE WW TREATMENT PLNT
WALNUT RIDGE, AR
|
0.79 kg/d | 0.00 | +1,245,543% | Mar 2024 |
|
WALNUT RIDGE WW TREATMENT PLNT
WALNUT RIDGE, AR
|
0.69 kg/d | 0.00 | +1,085,614% | Sep 2024 |
|
SOUTHERN ALLEGHENIES LANDFILL
DAVIDSVILLE, PA
|
7.30 mg/L | 0.00 | +811,122% | Dec 2021 |
|
TAPIA WRF
CALABASAS, CA
|
18.30 kg/d | 0.00 | +790,096% | Mar 2018 |