One of the problems with watching television investigative documentaries is that they can tax a person's reserve of righteous indignation.

Save some of that indignation for the problem explored on the ABC News Closeup report, "The Killing Ground," at 10 p.m. on Channel 7.

It concerns the dumping of chemical wastes that are poisoning our land and water and threatening our health. The clean-up costs may be beyond the nation's economic resources.

From the Love Canal in Niagara Falls, where people have been forced to evacuate their homes due to the health hazards of seeping chemical wastes, the hour-long documentary goes to a Louisana bayou and a Michigan lake to demonstrate that the danger is not confined to industrial urban areas.

A man facing a jail term for illegal dumping talks about the multimillion-dollar racket in handling chemical wastes. A southern governor talks about accommodating industry to get jobs and sometimes "knowingly and advisedly accepting environmental tradeoffs." In Washington, an official of the Environmental Protection Agency charges that the Carter administration apparently isn't willing now to pay the cost to enforce a new law on disposal of chemical wastes.

ABC News correspondents Britt Hume and Michael Connor are aggressive questioners of company spokesmen and government officials and have done a careful job of reporting on our chamber of environmental horrors.

Unfortunately, this otherwise insightful documentary fails to raise alternatives to dealing with the chemical waste problem. But the message is clear-the technology to dispose of these man-made toxins must be developed in the immediate future.