When Ohio’s Cuyahoga River caught fire in 1969—the same year Michigan’s Rouge River blazed because of waste oil—America had had enough of worsening water pollution. Public opinion strongly favored tougher laws and enforcement to protect water. It took a little more than three years, but on October 18,1972, overriding a veto by President Richard Nixon, Congress enacted what has come to be known as the federal Clean Water Act. Along with considerable federal aid for construction of municipal sewage treatment facilities, the Act called for water quality standards and action by the states to implement the law and achieve the benchmarks.