Secondary Treatment Guidelines Issued Under FWPCA
One of Aesop's fables tells of a wolf and a lamb who were drinking from the same stream. The wolf snarled at the lamb that it was muddying his drinking water, and that as punishment it would be eaten. "But," the lamb protested, "I can't be muddying your water, I'm downstream from you." The lamb was promptly eaten as a punishment for insolence.