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Ten years after the application of toxaphene to sandy soil, enough remains to kill termites.

Upon analysis, they were found to contain insecticide residues identified as the chlorinated hydrocarbons toxaphene, DDD, and DDE.

While the list of toxins found in the river decades later is still shocking - including PCB, dioxin and pesticides like DDT, dieldrin and toxaphene - the river has come back to life.

Water from a stream draining sprayed cotton fields remained lethal to fishes even after it had passed through a purifying plant, and in fifteen streams tributary to the Tennessee River in Alabama the runoff from fields treated with toxaphene, a chlorinated hydrocarbon, killed all the fish inhabiting the streams.

Upon analysis, they were found to contain insecticide residues identified as toxaphene, DDD, and DDE.