Fears US supreme court could radically reshape clean water rules

Conservative-majority court could soon decide on scope of Clean Water Act, dramatically affecting laws and wetlands countrywide

A 15-year legal tussle over a tiny plot of land near a lake in northern Idaho could culminate in the US supreme court drastically reshaping clean water laws across the country, with a decision by the conservative-dominated court now looming.

The case is the latest and perhaps most significant of the repeated challenges to the scope of the Clean Water Act, which has been the subject of 50 years of fraught argument over the federal government’s ability to prevent pollution seeping into America’s waterways.