Many Great Falls homes are not on municipal sewer and use private onsite wastewater systems, while some neighborhoods connect to Fairfax County's public sewer. Either way, the drain line from the house belongs to the owner, and a plumber repairs it when it clogs or breaks. Call the number on this page to be connected with a local plumber in Great Falls.

What happens when you call
You'll be connected with an independent plumber who works in Great Falls. Start by telling them whether your home is on public sewer or a private onsite wastewater system, because it changes where the problem can be and who else may need to be involved. The plumber will ask which drains are affected and whether this has happened before, then typically clear the line and run a camera to find the cause. On a house connected to the County sewer, the camera follows the lateral out to the public main. On a home with an onsite system, it follows the building drain out toward the system's tank.
What affects the cost
- Length of the line, which can be considerable on large Great Falls lots
- Depth, slope and the material of the pipe
- Mature trees, stone walls, paddocks or long driveways along the route
- Whether the damage can be lined or needs excavation
- Permit and inspection through Fairfax County Land Development Services
Great Falls conditions
Great Falls is an unincorporated community on the Virginia side of the Potomac, about 16 miles from Washington. It's largely a bedroom community with big lots, and roughly a fifth of it is rural; the median home was built in 1985. Many homes rely on private wells and are not on public sewer, while some neighborhoods are served by Fairfax Water and Fairfax County sewer. Service varies by address, so check your bill if you aren't sure.
For homes not on municipal sewer, the onsite system itself needs routine pumping and inspection by a provider who handles that work. A plumber's role is the plumbing that feeds it: the drains inside the house and the building drain out to the tank. If the camera shows the pipe is sound but waste still won't move, the issue may be in the onsite system, and you'll need its service provider. For homes on County sewer, Fairfax County's 24-hour line, 703-323-1211, checks the public main, and the private lateral is the owner's.
Before the plumber arrives
- Stop using water to avoid overloading the line or the onsite system
- Find the cleanout and, if you have one, the onsite system's access lid
- Locate any records showing where the line and the tank sit on the property
- Note when the problem began and which fixtures were affected
Sewer Line Repair questions in Great Falls
My home isn't on public sewer. What can a plumber still help with?
How do I find out who provides sewer service at my address?
Why do tree roots keep getting into my sewer line?
What happens to my lawn, driveway or patio during the repair?
More plumbing services in Great Falls
Sewer Line Repair nearby
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