Most Lorton homes are fairly new, with the 2000s as the biggest building decade and only about 17% of homes in the 22079 ZIP built before 1980. A repipe here usually targets the older homes or a specific failing section rather than a whole new house. Call the number on this page to be connected with a local plumber in Lorton.

Lorton's homes and water
Lorton runs along I-95 and Route 1 between Fort Belvoir and the Occoquan River, and the area around the former reformatory is now Laurel Hill. Most houses date from the 1990s and 2000s, with older homes scattered toward Newington and Mason Neck. Fairfax Water supplies the area, and its Griffith plant, which treats Occoquan Reservoir water, is near Lorton. Results from that plant show total hardness of roughly 77 to 147 mg/L, enough to leave scale on fittings over time. Fairfax Water owns the service line through the meter, and everything after the meter is the owner's.
What to do now
- Stop active water. If a line is leaking, close the main shutoff and catch what you can.
- Check the age of the house. Older homes are more likely to need a full repipe; newer ones usually need a targeted fix.
- Identify the material. Note what's at the water heater and under sinks, including any printed markings on plastic pipe.
- Look for a pattern. Are leaks on the pipe, at fittings or at fixture connections?
- Check warranties. In homes built in the last decade or two, some pipe or fitting failures may be covered.
- Ask for options. Have the plumber price a repair and a partial repipe before a full one.
Signs and likely causes
| Symptom | Likely cause |
|---|---|
| Several leaks at the same kind of fitting | A fitting type failing throughout the house |
| Pinholes on copper in an older home | Pipe thinning with age |
| Split line after a hard freeze | Pipe in a garage ceiling or outside wall |
| Low pressure in one wing | Undersized branch or partly closed valve |
Cost factors
- Full repipe versus a targeted section
- Number of floors and finished ceilings
- PEX, copper or matching what's already there
- Rerouting lines out of cold spaces
- Patching and paint
Fairfax County Land Development Services issues building and trade permits for Lorton through PLUS, and the plumber usually handles the application. In older homes toward Newington and Mason Neck, ask whether any original copper or steel remains hidden in walls, since a partial repipe that ties new pipe into old lines can leave the next leak waiting just past the new work.
Repiping questions in Lorton
Why would a fairly new house need new supply pipe?
Does the hardness of the water matter for new pipe?
Is a partial repipe ever enough?
Does a whole-house repipe need a permit here?
More plumbing services in Lorton
Repiping nearby
Helpful guides
Sources
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