Facility detail

CENTURY ALUMINUM OF KENTUCKY

1627 STATE RT 3543, HAWESVILLE, KY, 42348

Parent company: CENTURY ALUMINUM CO

Carcinogen PBT — EPA classifications across all reporting years

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Year-over-year total releases

Reported on-site TRI releases in pounds (lbs), grouped by reporting year.

Top chemical totals

The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.

Full release table

Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.

All values in pounds (lbs)
Year	Carbonyl sulfide	Hydrogen fluoride	Polycyclic aromatic compounds	Naphthalene	Chlorine	Total (lbs)
2022	282,827	140,904	5,732	74,266	—	506,887
2021	528,964	333,739	10,017	126,716	—	1,004,810
2020	506,597	180,430	11,227	161,610	—	865,353
2019	455,364	111,724	11,257	—	—	582,871
2018	313,320	73,100	5,130	—	—	392,035
2017	276,364	86,084	3,700	—	—	366,538
2016	302,487	88,181	5,154	—	—	396,234
2015	606,400	216,600	11,718	—	—	835,550
2014	768,700	241,000	15,649	—	—	1,026,423
2013	648,500	232,000	231,000	—	—	1,141,790
2012	650,500	254,000	236,100	—	—	1,171,390
2011	509,023	334,042	6,762	—	—	850,696
2010	475,920	251,000	7,610	—	—	735,508
2009	478,396	176,450	3,180	—	—	658,438
2008	592,193	244,300	7,743	—	—	845,230
2007	588,603	310,000	21,327	—	—	922,651
2006	—	246,000	10,927	—	—	261,270
2005	—	411,000	2,764	—	—	416,454
2004	—	459,889	6,266	—	—	471,373
2003	—	380,943	8,420	—	—	396,339
2002	—	382,071	5,081	—	6,610	394,385
2001	—	286,000	5,100	—	13,580	305,393
2000	—	354,000	5,300	—	13,850	374,373
1999	—	288,000	—	—	18,650	308,752
1998	—	490,000	—	—	18,630	510,062

▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.