Leak Detection in Vienna, VA

Which utility do I call about my meter?

That depends on your address. The Town of Vienna runs its own water system with about 9,300 connections, roughly a third of them outside town limits, and buys its water wholesale from Fairfax Water. Other parts of the Vienna ZIP codes are on Fairfax Water directly. The Town publishes a service area map, and your bill shows which applies. Town water customers can reach customer service at 703-255-6385 or the Water and Sewer Division at 703-319-8611; after hours, the Town directs callers to the non-emergency police line at 703-255-6366.

Why do older Vienna homes leak?

Most of the town's single-family neighborhoods are decades old, and the median build year is 1971. Copper supply lines that old can develop pinholes, gate valves stop sealing, and joints in basement ceilings start to weep. The water plays a part as well: the Town describes it as moderately hard to hard, about 5 to 10 grains per gallon, and that scale wears valve seats and toilet fill valves. The good news is the service line. The Town's inventory found no lead or galvanized service lines, and nearly all are copper, with some polyethylene on the homeowner's side.

What does a leak search involve?

It starts at the meter: everything off, watch for movement, then close the house valve to separate an outdoor leak from an indoor one. Inside, the plumber tests hot and cold lines separately and uses moisture meters, thermal imaging or acoustic gear to find the spot before opening anything. If the repair needs a permit, it goes through Fairfax County Land Development Services, and projects inside town limits also need Town of Vienna approval. In an older house, the plumber may also point out other aging valves or connectors spotted along the way, which you can choose to replace now or keep an eye on.

A Vienna note

Many Vienna homes have had basements finished or kitchens and baths redone over the years, which can bury old joints behind new drywall. When a meter test shows a leak but nothing is visible upstairs, the basement ceiling and the walls around the water heater are the first places to check. Exterior walls on the north side of the house deserve a look after a hard freeze, too.