| Year | Non-NPL Superfund Sites | National Priorities List (NPL) Sites |
| number | ||
| 1980 | 8,689 | 0 |
| 1981 | 13,893 | 0 |
| 1982 | 14,697 | 160 |
| 1983 | 16,023 | 551 |
| 1984 | 18,378 | 547 |
| 1985 | 22,238 | 864 |
| 1986 | 24,940 | 906 |
| 1987 | 27,274 | 967 |
| 1988 | 29,809 | 1,195 |
| 1989 | 31,650 | 1,254 |
| 1990 | 33,371 | 1,236 |
| 1991 | 35,108 | 1,245 |
| 1992 | 36,869 | 1,275 |
| 1993 | 38,169 | 1,321 |
| 1994 | 39,099 | 1,360 |
| 1995 | 15,622 | 1,374 |
| 1996 | 12,781 | 1,210 |
| 1997 | 9,245 | 1,194 |
| 1998 | 9,404 | 1,192 |
| 1999 | 9,237 | 1,217 |
| 2000 | 9,176 | 1,238 |
Source: U.S. Environmental Protection Agency, Office of Emergency and Remedial Response, Superfund Hazardous Waste Site Query (an Internet accessible database; as of August 22, 2000).
Notes: NPL = National Priorities List. Data are cumulative. The 1995 data reflect the removal of over 24,000 sites from the Superfund inventory as part of EPA’s Brownfields initiative to help promote economic redevelopment of these properties.
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