“Since the 1972 U.S. Clean Water Act, government and industry have invested over $1 trillion to abate water pollution, or $100 per person-year. Over half of U.S. stream and river miles, however, still violate pollution standards. Despite the potential to address this market failure, the Clean Water Act has been one of the most controversial regulations in U.S. history…it is unclear whether the Clean Water Act has been effective or whether water pollution has decreased at all.” – From The Quarterly Journal of Economics: Consequences of the Clean Water Act and the Demand for Water Quality
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