David Keiser, Joseph S. Shapiro, 05 October 2019

The Trump administration recently repealed the US Clean Water Rule, which sought to extend federal water quality protection to cover most rivers and streams. This column seeks to better understand the effectiveness of such laws that govern US surface and drinking water quality, the efficiency of these laws, and the state of economic research on water quality. It finds that regulations governing surface water quality are more likely to fail cost-benefit tests compared to drinking water and air pollution regulations, possibly due to an underestimation of the benefits of surface water pollution control.

David Keiser, Joseph S. Shapiro, 24 October 2018

Many argue that the $1 trillion cost of the 1972 US Clean Water Act outweigh its benefits. The column uses new evidence on grants and water pollution readings to measure its impact. While the Act has decreased US water pollution, the estimated change in home values caused by this has been only one quarter of the grant costs, although this probably understates the full impact of the Act. The analysis suggests that targeting water pollution in more populous areas would improve net social benefits.

Events

CEPR Policy Research