Sterling has older housing than most of Loudoun County, so hidden leaks here often come from aging valves, copper joints and water heater connections. A higher Loudoun Water bill or a meter that keeps moving is the usual tip-off. Call the number on this page to be connected with a local plumber in Sterling.
Signs of a hidden leak
- A bill showing more water than your household routine explains
- The meter turning slowly while everything is shut off
- Stains on a lower-level ceiling or along baseboards
- A toilet that hisses or refills by itself
- Flooring that is cupping, lifting or soft underfoot
Sterling's homes and water service
Sterling began with the early-1960s Sterling Park development near Dulles Airport, and about 43 percent of homes in the 20164 ZIP code were built before 1980, with most of the rest from the 1980s. That's a big contrast with Ashburn next door. Houses of that age often have original copper with pinholes at bends, gate valves that won't seal, and water heater and washer connections that have been redone more than once, each time adding joints that can weep.
Loudoun Water supplies Sterling with Potomac River water, plus Goose Creek water when needed, treated at its Trap Rock plant and at Fairfax Water's Corbalis plant, and disinfects with chloramine. Loudoun Water states its system has no lead service lines. For billing and usage history, call customer relations at 571-291-7880; for main breaks or water rising in the street, the after-hours emergency line is 571-291-7878.
If your yard has irrigation or you have a pool, the backflow preventer must be tested every year by a certified tester under Loudoun Water's cross-connection program, and the lines past it are yours to maintain. A broken sprinkler head along Sterling Boulevard or a slow pool fill line can quietly add up on the bill.
What drives the cost
- How long it takes to isolate the leak in an older, often remodeled system
- Whether walls, ceilings or concrete stand between the plumber and the pipe
- Thermal, acoustic or pressure testing gear
- Whether one fitting fixes it or a whole run of old copper should be replaced
When you call
Your call reaches an independent plumber who serves Sterling. Share when you first noticed the problem and what the meter does with everything off, and mention any past repairs you know about, since patched sections are common leak spots. If the repair becomes a larger plumbing job, trade permits come from Loudoun County Building and Development, and the plumber can tell you whether one is needed.
Leak Detection questions in Sterling
Are older homes here more likely to have hidden leaks?
How do I use the water meter to check for a hidden leak?
Who do I call about water coming up near the meter or in the street?
What if I smell gas instead of finding water?
More plumbing services in Sterling
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