A plumber in Fort Belvoir.

Inside the fence, The Villages at Belvoir maintains the plumbing in family housing, so a leak in a post home goes to them as a service request. Off post, 22060 is Fairfax County’s: Cook Inlet’s 256 houses and townhouses, and a short row of older houses on Backlick Road. Fairfax Water supplies both, here mostly from its Griffith plant on the Occoquan, about 3 to 8 grains of hardness per gallon in 2025.

The ground is the story in Cook Inlet. Fairfax County’s soil map puts it on Coastal Plain clay in hydrologic group D, the slowest-draining class, with the water table as little as two feet down, under houses built with full basements. On June 28, 2016, the National Weather Service logged Route 1 flooded and closed at Belvoir Court. After a storm like that, have us go over the sump pump, the floor drains and the main line; a pump that can’t keep the pit down gets replaced at the one price on our sump pump replacement page.

Cook Inlet’s 2002 to 2004 houses have copper or PEX supply and PVC drains. What comes due at twenty years is the equipment: the gas water heater beside the furnace, likely on its second tank or ready for one, and any builder’s pressure reducing valve by the main. A tank water heater replacement runs $2,757 to $7,494; a pressure reducing valve, $500 to $1,000. The sewer line to the main is the owner’s in Fairfax County, under the street too, so a sewer camera inspection, $89 added to a visit, comes before any talk of digging.

Accotink is a different century. Fairfax County dates one Backlick Road house to 1900, six to 1925 and six to 1978, and eight of its fifteen dwellings on record have no basement, so their pipes run where cold air reaches. Reagan National, 13 miles up the river, averages about 60 freezing nights a year, and Arctic air like December 2022’s splits a crawlspace pipe. Fairfax County Fire and Rescue says to shut the valve to a frozen pipe first and thaw it slowly, never with a torch.