The present legislation is based on the Federal Water Pollution Control Amendments of 1972. Significant amendments were added in the Clean Water Act of 1977 and the Water Quality Act of 1987.
By Anne Marie Helmenstine, Ph.D., About.com Guide
The present legislation is based on the Federal Water Pollution Control Amendments of 1972. Significant amendments were added in the Clean Water Act of 1977 and the Water Quality Act of 1987.
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