By Kelly Knutson and Colleen Walters Nearly 50 years after the enactment of the Clean Water Act, half of America’s assessed waterways are impaired by pollution ― meaning they do not meet their state’s water quality standards for designated uses, including recreation, aquatic life, fish consumption, or drinking water sources ― according to a new report by the Environmental Integrity Project. The streams, rivers and estuaries in the Delaware River Basin, particularly in Delaware and New Jersey are some of the most impacted in the country. The report lists many reasons why rivers, streams, estuar…