A Sterling slab leak is a pipe leaking inside or under concrete, usually a basement floor, the slab of a rambler or split-level, or a townhouse ground floor. Loudoun Water supplies water and sewer to Sterling, and the plumbing on the house side is the owner's to repair. Call the number on this page to be connected with a local plumber in Sterling.

Signs worth a closer look
- A water bill that jumps with no change in use
- The meter's leak indicator turning when the house is idle
- Warm or damp flooring on the lowest level
- Cracks in a slab floor that stay wet
- Low pressure that started suddenly at several fixtures
Sterling's housing and water
Sterling is an established suburb beside Dulles International Airport that began with the early-1960s Sterling Park development, and its homes are older than most of Loudoun County. In ZIP 20164, about 43% of homes predate 1980, with the largest groups built in the 1970s and 1980s. Ramblers and split-levels from that period often have copper supply lines and older drains in or under a slab, and after 40 to 60 years those runs are more likely to wear through.
Loudoun Water provides public water and sewer in Sterling, which is unincorporated. It disinfects with chloramine on its Central System and states that its service line inventory contains no lead lines. If water is breaking out near the street or the meter, its after-hours emergency line is 571-291-7878; customer relations is 571-291-7880. Loudoun Water can tell you where its part of the service line ends, and everything past that point is yours.
Cost factors
- Detection: how many tests it takes to isolate and pinpoint the leak
- Access: cutting the slab versus rerouting the line through walls or ceilings
- Floor finishes: tile and hardwood cost more to open and restore than bare concrete
- Damage: wet drywall, trim and carpet pad add work
- Permits: Loudoun County Building and Development handles them, with plumbing permits filed under a parent building permit
When you call
You will be connected with an independent plumber who serves Sterling. Mention the age of the house, whether it is a rambler, split-level or townhouse, and what the meter test showed. If water is spreading, turn off the main and leave it off. In an older Sterling home, ask whether a reroute or partial repipe makes more sense than one spot repair, since the rest of the buried line is the same age as the part that failed.
Slab Leak Repair questions in Sterling
Do older homes here have more slab leak risk?
Should I call the water utility or a plumber first?
How can I use the water meter to check for a hidden leak?
Can winter cold cause a leak under the slab?
More plumbing services in Sterling
Slab Leak Repair nearby
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