"That could happen tomorrow," Wivell said. "It's not a lot of capacity left."
Murray said the county plans to ask the city for at least 25,000 gallons of capacity. That's enough to connect about 125 new homes to the sewer system.
Murray said the county typically uses about 100,000 gallons of capacity a year in the areas serviced by the city's sewer system.
The city granted the county 25,000 gallons of capacity in May, half of what city Water and Sewer Department Manager David Shindle presented to the City Council.
Hagerstown Mayor William Breichner said the city has concerns about its own future sewer capacity, so it has been allocating capacity to the county in smaller increments.
City Councilman Kristin Aleshire said the council probably will discuss the county's request Tuesday at a meeting with the commissioners.
Breichner said the city hasn't received an official request from the county, but city officials anticipated one would be coming.
"We expected one because we knew they were getting low," he said. "I would think that we would honor that request."
