The Town of Haymarket counted 230 residents in 1980 and 1,782 by 2010, by its own hazard plan’s figures. Close to six in ten of the Town’s homes went up in the 1980s and 90s, median 1995, and a sewer line from those years is usually plastic out to the cleanout. At thirty or so, it’s old enough for the ground around it to have moved.
Across all of 20169 the median owner home dates from 2006, and close to eight in ten homes went up in 2000 or later, Dominion Valley and Piedmont among them. Prince William Water’s standards now have the utility run its own camera down each new service connection, property line to building, before accepting it. If yours got that look when the house was new, it may be the last anyone took. Twenty years on, the faults to rule out are the ones the utility screens its own mains for: a sag, a rolled joint, pipe pressed out of round.
The same standards keep a new lateral at least five feet from a tree where possible, but a shade tree planted after closing has no idea where the pipe runs, and twenty years of growth can carry its roots to a joint that has let go.
Bull Run Mountain Estates is the older end of the ZIP: about six in ten of its houses were built before 1980, most in the 1970s. A line from that decade can be cast iron, early plastic or, on the first of them, Orangeburg, pressed paper and tar that slumps with age. Prince William County’s sewer plan names two ways a house is served, public sewer or a septic system on the lot, and a mountain house can be on either. On septic we run the camera from the house to the tank; the tank is a septic contractor’s job, since SwiftPro does no septic work.