Selenium
CAS # 7782-49-2
3,299,546 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)
+68% overall
| Year | Total Released (lbs) | Reporting Facilities | vs Prior Year |
|---|---|---|---|
| 2015 | 272,935 | 40 | — |
| 2016 | 381,461 | 41 | +40% |
| 2017 | 309,476 | 37 | -19% |
| 2018 | 293,359 | 27 | -5% |
| 2019 | 211,681 | 16 | -28% |
| 2020 | 286,611 | 28 | +35% |
| 2021 | 155,729 | 25 | -46% |
| 2022 | 460,855 | 26 | +196% |
| 2023 | 469,626 | 24 | +2% |
| 2024 | 457,813 | 24 | -3% |
Top Releasing Industries
| Industry Sector | Total Released (lbs) | Facilities |
|---|---|---|
| Mining, Quarrying, and Oil and Gas Extraction | 0 | 1 |
| Administrative and Support and Waste Management | 2,949,910 | 15 |
| Manufacturing | 339,379 | 46 |
| Utilities | 10,257 | 1 |
| Wholesale Trade | 0 | 3 |
Worst Water Discharge Exceedances
Facilities that exceeded their permit limits for this chemical in discharge monitoring reports
| Facility | Reported | Limit | Exceedance | Period |
|---|---|---|---|---|
|
SCATTERGOOD GENERATING STATION
PLAYA DEL REY, CA
|
0.00 mg/L | 0.00 | +2,147,483,650% | Dec 2015 |
|
SCATTERGOOD GENERATING STATION
PLAYA DEL REY, CA
|
0.00 mg/L | 0.00 | +2,147,483,650% | Dec 2015 |
|
PALOMAR ENERGY
ESCONDIDO, CA
|
0.04 mg/L | 0.00 | +2,147,483,650% | Dec 2017 |
|
PALOMAR ENERGY
ESCONDIDO, CA
|
0.04 mg/L | 0.00 | +2,147,483,650% | Dec 2017 |
|
RED SULPHUR PSD
PETERSTOWN, WV
|
85.20 mg/L | 0.06 | +141,900% | Jul 2023 |
|
RED SULPHUR PSD
PETERSTOWN, WV
|
76.40 mg/L | 0.06 | +127,233% | May 2023 |
|
RED SULPHUR PSD
PETERSTOWN, WV
|
66.00 mg/L | 0.06 | +109,900% | Oct 2023 |
|
OJAI VALLEY WWTP
VENTURA, CA
|
28.44 kg/d | 0.04 | +69,511% | Jan 2023 |
|
NORTHEAST REGIONAL WWTP
ALICE, TX
|
27.43 kg/d | 0.04 | +63,270% | Feb 2017 |
|
OJAI VALLEY WWTP
VENTURA, CA
|
21.52 kg/d | 0.04 | +52,567% | Mar 2023 |
|
RUSH CREEK SURFACE MINE NO. 2
CHARLESTON, WV
|
1.90 mg/L | 0.00 | +40,219% | Aug 2016 |
|
OJAI VALLEY WWTP
VENTURA, CA
|
14.94 kg/d | 0.04 | +36,456% | Jun 2019 |
|
RUSH CREEK SURFACE MINE NO. 2
CHARLESTON, WV
|
2.95 mg/L | 0.01 | +35,876% | Aug 2016 |
|
OJAI VALLEY WWTP
VENTURA, CA
|
11.71 kg/d | 0.04 | +32,150% | Apr 2024 |
|
OJAI VALLEY WWTP
VENTURA, CA
|
11.71 kg/d | 0.04 | +32,150% | Apr 2024 |
|
OJAI VALLEY WWTP
VENTURA, CA
|
28.44 kg/d | 0.10 | +27,139% | Jan 2023 |
|
OJAI VALLEY WWTP
VENTURA, CA
|
9.81 kg/d | 0.04 | +23,900% | May 2023 |
|
OJAI VALLEY WWTP
VENTURA, CA
|
8.90 kg/d | 0.04 | +21,678% | Apr 2019 |
|
OJAI VALLEY WWTP
VENTURA, CA
|
8.85 kg/d | 0.04 | +21,567% | Feb 2019 |
|
OJAI VALLEY WWTP
VENTURA, CA
|
8.85 kg/d | 0.04 | +21,567% | Feb 2023 |