Slab leaks in Potomac usually involve supply piping buried under a basement or lower-level floor, and with a median home built around 1977, many of those lines are original. Most of Potomac is on WSSC Water, though some properties are planned for private wells instead. Call the number on this page to be connected with a local plumber in Potomac.
Potomac in brief
Potomac is an unincorporated, largely residential area about 12 miles northwest of downtown Washington, centered on Potomac Village where Falls Road and River Road meet. Older farmhouses still stand among the suburban developments. Montgomery County assigns every property a water and sewer service category, and while most Potomac homes are on WSSC Water, some are designated for private wells and onsite wastewater systems. That changes how a leak shows itself: on public water you can watch the WSSC meter, while on a well the clue is a pump that runs or cycles with nothing open.
What to do now
- Shut everything off and read the meter. Note the number, go an hour without using water, and read it again.
- On a well, listen to the pump. A pressure tank that keeps calling for water with every tap closed points to a leak somewhere in the system.
- Close the main if water is visible. The shutoff is usually where the line enters the basement.
- Turn off the water heater's cold supply if the floor near it, or along a path from it, feels warm.
- Send street-side problems to the utility. Water bubbling near the curb or meter on WSSC service goes to 301-206-4002.
Symptom guide
| Symptom | Likely cause |
|---|---|
| Warm stone or tile in a kitchen or lower-level bath | Hot water branch leaking under the slab |
| Well pump short-cycling overnight | Pressure loss from a hidden leak |
| Hairline cracks in the basement floor that stay damp | Water escaping from a buried line |
| Weak pressure at one end of the house only | Leak on that branch |
| Water heater firing more often than usual | Hot water escaping continuously |
Cost factors
Large Potomac houses often have long pipe runs and costly floor finishes, so the bill depends heavily on where the leak sits and what covers it. Locating time, slab cutting versus an overhead reroute, the condition of the rest of the pipe and any drying work all matter. Plumbing work in Montgomery County is permitted and inspected by WSSC Water and carried out by a plumber registered with WSSC. WSSC adds orthophosphate to coat pipe interiors and slow corrosion, which protects sound copper but doesn't reverse wear that has already happened.
Slab Leak Repair questions in Potomac
My home is on a private well. How would a leak under the floor show up?
Doesn't the utility treat the water to protect pipes from corrosion?
What happens to my flooring or finished basement during the repair?
How long can a slab leak safely wait?
More plumbing services in Potomac
Slab Leak Repair nearby
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