Leaky barrels can be removed, but contaminated land and groundwater remain. Most Superfund sites have been on the list for decades.

Deleted

Three out of four of the currently deleted sites spent more than ten years on the list.

Construction completed

On almost half of these sites, construction was completed more than 15 years ago.

Active

65 of these sites have been active since September 1983.

Proposed

Of the 52 currently proposed sites, almost half were listed in the 1990s.