Lorton homes are mostly newer, so hidden leaks here usually come from fittings, valves, irrigation or the buried line from the meter. A Fairfax Water bill that rises without explanation is the common first sign. Call the number on this page to be connected with a local plumber in Lorton.

About Lorton
Lorton stretches along I-95 and Route 1 between Fort Belvoir and the Occoquan River, taking in areas like Laurel Hill, Newington and Mason Neck. Only about 17 percent of homes in the 22079 ZIP code were built before 1980, and the 2000s were the biggest building decade, so most plumbing here is relatively young. In a house that age, the search usually ends at a single failed part: a supply hose, a fitting behind the washer, a shower valve or the connector on the water heater. Water comes from Fairfax Water, whose Griffith plant, which treats Occoquan Reservoir water with ozone and granular activated carbon, sits near Lorton. Fairfax Water's customer line is 703-698-5800, and its after-hours emergency number is 703-698-5613.
What to do now
- Turn off all fixtures, the washer, the dishwasher and the irrigation timer.
- Note the meter reading and watch the flow indicator.
- If it is moving, close your main shutoff and look again to separate indoor from outdoor leaks.
- Run a dye test in each toilet.
- Look at the water heater, under sinks and behind the refrigerator.
- Check the hose bibbs outside, especially after a cold night, for drips or a split behind the wall.
- Call for help with your findings and recent bills in hand.
Common symptoms
| Symptom | Likely cause |
|---|---|
| Bill up in summer only | Irrigation zone or hose bibb leak |
| Stained ceiling under the laundry room | Washer hose or supply box valve |
| Wet carpet next to a bathroom wall | Shower valve or supply joint |
| Meter moving with the main closed | Yard service line |
| Ice maker drips or puddles | Cracked plastic supply line |
Cost factors
Newer houses often mean a quicker search, but finished basements, tiled showers and long yard runs can add time. The detection tools used, and whether the fix is a single fitting or a new section of pipe, set most of the price. Irrigation is worth checking first: lawn systems need a testable backflow assembly that is tested at installation, after any repair or relocation, and at least once a year by a certified tester, and the system past that point is the owner's. Larger plumbing repairs in Lorton are permitted by Fairfax County Land Development Services, reachable at 703-222-0801. Ask the plumber to explain what was found and why the repair was chosen, so you know what to watch for next time.
Leak Detection questions in Lorton
Can a fairly new house have a hidden leak?
Could the lawn irrigation system be where the water is going?
Who do I call about water coming up near the meter or in the street?
Will finding the leak mean opening walls or ceilings?
More plumbing services in Lorton
Leak Detection nearby
Helpful guides
Sources
- Fairfax Water annual water quality report
- Fairfax Water: annual report on water quality
- Prince William Water: water treatment facilities
- Fairfax County cross connection control and backflow prevention
- Fairfax County Land Development Services
- Lorton ZIP 22079 housing by year built
- Lorton, Virginia (Wikipedia)
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