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Environmental Protection Agency (EPA)
U.S. regulator implementing laws such as the Clean Air Act and Clean Water Act—core site for quantitative benefit-cost analysis of pollution controls.
The EPA sets emissions standards, runs permit programs, and partners with states on enforcement. Major rules draw thousands of public comments and court challenges; economists quantify mortality reductions and compliance costs.
Deregulation debates often target EPA rules as burdens on industry; public-health advocates stress externalities markets ignore.
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Environmental regulation and clean-air-act glossary entries; government-regulation topic.