The correct is A) have a means of enforcement.
The Clean Water Act does not ensure high water quality throughout the nation because it does not have a means of enforcement.
The Clean Water Act was passed on October 18, 1972, and was aimed to restore and maintain clear waters in the United States. Also known as the Federal Water Pollution Control Act Amendments of 1972, it tried to be the answer for public concern about the environment and water pollution. The act was again amended in 1977 to regulate untreated wastewater from industries that used to discharge on rovers, akes, and the sea. But the problem with the Act is that does not ensure high water quality throughout the nation because it does not have a means of enforcement.