| Year | Act |
| 1948 | Federal Water Pollution Control Act |
| 1956 | Water Pollution Control Act of 1956 |
| 1961 | Federal Water Pollution Control Act Amendments |
| 1965 | Water Quality Act of 1965 |
| 1966 | Clean Water Restoration Act |
| 1970 | Water Quality Improvement Act of 1970 |
| 1972 | Federal Water Pollution Control Act Amendments |
| 1977 | Clean Water Act of 1977 |
| 1981 | Municipal Wastewater Treatment Construction Grants Amendments |
| 1987 | Water Quality Act of 1987 |
| 2014 | Water Resources Reform and Development Act of 2014 |