An estimated 15,810 gallons of untreated, diluted wastewater overflowed Saturday morning in Rockville, according to the Montgomery County Health Department.
The overflow occurred at 11:15 a.m. near 6120 Executive Blvd. in Rockville. The wastewater entered an unnamed creek part of the Cabin John watershed basin at a rate of 50 gallons per minute.
The department said the wastewater overflowed from a manhole cover, where rags and roots created a blockage in the sewer main.
Washington Suburban Sanitary Commission crews addressed the overflow, which ended that afternoon at 4:30 p.m. Signs were posted warning citizens to avoid the overflow area.