<![CDATA[Around a month ago, a 72-inch sewer line failed along Clara Barton Parkway in Montgomery County, Md. The Potomac Interceptor, owned and operated by DC Water, ruptured on Jan. 19, sending untreated wastewater into the C&O Canal and the Potomac River; what began as a local emergency has grown into one of the largest municipal wastewater spills in American history.]]>