What clean water regulation do you think has had the greatest impact on water quality in the United States? In a 3–5 sentences, explain and justify your opinion.

In my opinion, the Clean Water Act (CWA) of 1972 has had the greatest impact on water quality in the United States. The CWA established regulations to control and limit the discharge of pollutants into U.S. waters, including lakes, rivers, and coastal areas. This act has significantly decreased the amount of pollutants being dumped into our waterways and has helped to prevent contamination from agricultural, industrial, and commercial sources. The CWA continues to be a critical piece of legislation in protecting our nation's water quality.

In my opinion, the Clean Water Act of 1972 has had the greatest impact on water quality in the United States. This regulation established the basic structure for regulating discharges of pollutants into US waters and provided the Environmental Protection Agency (EPA) with the authority to set effluent limitations and water quality standards. The Act also required industries to obtain permits for discharging pollutants and implemented programs to reduce nonpoint source pollution. The comprehensive framework and enforcement mechanisms introduced by the Clean Water Act have significantly improved water quality across the country, reducing the level of pollutants and protecting aquatic ecosystems and public health.