The Census lists all of the roughly 150 owner homes in ZIP 20129 as detached houses, with a median build year of 1997. A pump sits on a lot of its own there, with no shared wall between you and the pipe that carries its water away. It also means a pump from the year the house went up is nearly three decades old, long past what pump makers plan for. The Census can’t say which houses have a pit, so check the lowest level of yours.
A sump pump is an electric motor, so it stops when the power does, and storms are what take the power here. On July 15, 2024, winds near Clarkes Gap Road and Hurley Lane blew down dozens of large trees, wires and a few poles. On June 2, 2022, trees and wires blocked Hamilton Station Road, Route 7 and East Colonial Highway. A pump matters most when the ground is wet and the line is down, which is the case for a battery backup.
The Purcellville station records 43.78 inches of precipitation a year, and water arrives fast in this corner of Loudoun. On June 12, 2014, 6 to 8 inches flowed over Bridgeview Court near the Route 7 and Route 9 interchange, and high water closed eastbound Route 7 at Charles Town Pike on August 6, 2020. That same rain fills a pit. A pump that runs and runs without catching up is the one to replace before the next storm.
Winter is the other test. The Purcellville station counts more than a hundred nights a year at or below freezing, and Loudoun County’s building code lists a frost depth of 24 inches. Ice in a buried outside pipe gives the motor nowhere to push, and a motor straining that way wears out ahead of its time. When the old pump comes out, the outside line is worth a look: where it ends, how it slopes and whether it drains. If it needs changing, that goes on the estimate as its own line.