Many Great Falls homes run on private wells, so a hidden leak may show up as a well pump that runs when no one is using water rather than as a higher bill. Homes on Fairfax Water can use the meter instead. Either way, call the number on this page to be connected with a local plumber in Great Falls.
When you call
You will reach an independent plumber who works in Great Falls. Tell them first whether the house is on a private well or on Fairfax Water, since that changes how the leak is found. On public water, the search starts at the meter. On a well, it starts at the pressure tank: with every fixture off, the gauge should hold steady, and a pump that kicks on with nothing open means water is escaping somewhere between the well and the faucets. From there, the plumber isolates the buried line, then the hot and cold sides inside, and uses listening and thermal tools to pin it down.
Cost drivers
- Well or public water, and how much buried line runs between the source and the house
- Large homes with many fixtures, which take longer to rule out one by one
- Access through finished space or under long driveways and landscaping
- Whether the pump, pressure tank or pressure switch was strained by short cycling
Great Falls conditions
Great Falls is a large-lot bedroom community along the Potomac, about one-fifth rural, with a median home built in 1985. The Great Falls Citizens Association notes that many homes rely on private wells while some neighborhoods are served by Fairfax Water, and it recommends testing wells every year, and sooner if the smell, taste or look of the water changes. Many homes also aren't on municipal sewer and use private onsite wastewater systems.
Long service runs are the big difference here. Whether the line comes from a well or from a meter at the road, it can be a long stretch of buried pipe, and a leak in it may soak into the ground without ever surfacing in the yard. For Fairfax Water customers, the utility owns the meter and its setting, and the homeowner owns all the pipe on the property, including the line from the meter to the house. On a well, every part of the system is the owner's. Larger repairs are permitted by Fairfax County Land Development Services.
Checklist before the visit
- Know whether you're on a well or Fairfax Water, and where the pressure tank or meter is
- Note how often the well pump has been cycling, and at what times
- Turn off irrigation and any pool or pond fill
- Have recent water or electric bills handy if usage has jumped
Leak Detection questions in Great Falls
How is a leak found when the house runs on a private well?
Who is responsible for a leak between the meter and the house?
Can a hard freeze cause a leak I can't see yet?
What if I smell gas instead of finding water?
More plumbing services in Great Falls
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