Sewage Spill Is Over, But Contamination Lingers In Potomac

As public health officials declared the end of a sewage contamination emergency in the Potomac River last month, scientists feared the waterway was still in distress.More than 240 million gallons of human waste had poured into the river from a broken sewer main. Researchers went out in early March to sample the water, trying to see what damage had been done.“The color is not good,” said Judy O’Neil, an associate…