From the Huffington Post

In 1965, President Lyndon Johnson called the Potomac River, polluted with sewage and riddled with algae blooms, a “national disgrace.” Forty years ago this year, the Clean Water Act of 1972 (CWA) was signed into law, and resulted in expansive, real improvements in the health of the Potomac River.

The CWA is critically important and has made a real difference, but has it gone far enough? Perhaps the new documentary about the Potomac River and the challenges facing it will help shine a light on how successful the law has been or, more importantly, has not.

Read: http://www.huffingtonpost.com/ed-felker/potomac-river-pollution_b_2125829.html