CWA History

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History of the "Clean Water Act"

The Clean Water Act (CWA) is the principle law governing pollution control and water quality in the U.S. The objective of this Act is to restore and maintain the chemical, physical, and biological integrity of the nation’s waters. The CWA has been amended numerous times and has been given a number of titles, including the Water Pollution Control Act, the Federal Water Pollution Control Act, the Clean Water Act, and the Federal Water Quality Act.

Water Pollution Control Act, 1948

During the first decades of the 20th century, little regard was given to the discharge of municipal and industrial wastes, and pollution of the nation’s waters was common. Many streams, rivers, and lakes were so polluted that fish were dying in large numbers, and the water was unfit for swimming. Manhattan was described as "an island in New York surrounded by sewage". Congress reacted to these problems by passing the Water Pollution Control Act of 1948. This Act authorized the federal government to help local governments solve their water quality problems. But congress failed to appropriate money for construction, so the Act did little to improve the problems of polluted waters.

Federal Water Pollution Control Act, 1972

Although Congress made some attempts in the 1950s and 1960s to strengthen the Water Pollution Control Act, water pollution problems continued to increase. By 1970, virtually every State had rivers or lakes in crisis condition because of uncontrolled wastewater discharges. In response to these problems, the Federal Water Pollution Control Act of 1972 established a national goal that all waters in the U.S. should be made fishable and fit for swimming. Among other things, this Act provided $18 billion in grants for construction of wastewater treatment facilities, established the National Pollutant Discharge Elimination System (NPDES) permit program, and required States to establish total maximum daily loads for pollutants in their waters.

Clean Water Act, 1977

In 1977, amendments were made to the Water Pollution Control Act, giving the Act its current title. These amendments gave the EPA the authority to set effluent and water quality standards for all contaminants in the nation’s waters. The act made it unlawful to discharge any pollutant from a point source into surface waters without a NPDES (National Pollutant Discharge Elimination System) permit.

Water Quality Act, 1987

In 1987, amendments were made to the CWA (Clean Water Act) to help cities obtain low-cost funding for wastewater treatment, and non-point source pollution control. At the same time, the act shifted much of the burden of paying for water quality programs to the shoulders of local governments. The legislation also created the National Estuary Program to help remediate, protect, and preserve our estuaries.

Results of CWA and its amendments

Although all the goals of the CWA have not been met, there is no doubt that the CWA has brought about tremendous improvements in the quality of the nation’s waters. Our surface waters are getting cleaner. Implementation of the NPDES program, and the installation of improved effluent treatment, has led to significant reduction in the discharge of pollutants. Results can be seen in improvement in dissolved oxygen levels, reduction in algal blooms, and increased fish abundance and diversity. These improvements have resulted in an economic boom in many cities throughout out the U.S., as new businesses, conventions, and tourists have been drawn to waterfronts.

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Page last updated: 07/22/99