Clarksburg's housing is among the newest in Montgomery County, with most homes built since 2000, yet a supply line under a basement or slab floor can still leak from a bad fitting or construction damage. WSSC Water owns the service line from the main to the property line; from there into the house it belongs to the owner. Call the number on this page to be connected with a local plumber in Clarksburg.
Clarksburg in brief
Clarksburg began as an 18th-century crossroads and is now a fast-growing suburb at the northern end of the I-270 corridor, about four miles north of Germantown. Roughly 84 percent of its homes were built between 2000 and 2019, and the median build year is around 2010. Young plumbing is usually reliable, but leaks under concrete in newer homes do happen: a crimp ring that wasn't fully seated, a line nicked when the slab was poured, or a pipe drilled through when a basement was finished later. Most homes are on WSSC Water, though the county's water and sewer categories can put some rural-edge properties on wells and onsite systems, so service varies by address.
What to do now
- Run a meter check. Shut off all water use, including irrigation and the ice maker, and watch the meter for a few minutes.
- Look at the obvious first. A running toilet or a dripping hose bib can move the meter too.
- Stop active water. If water is on the floor, close the main valve where the line enters the house.
- Check your builder paperwork. If the home is still under a builder or plumbing warranty, have the documents ready.
- Call the right party. Leaks between the main and the property line are WSSC's; report them at 301-206-4002. Leaks past that point are for a plumber.
Symptoms and what they usually mean
| Symptom | Likely cause |
|---|---|
| Meter moving, nothing visible | Leak on the house side, possibly under the basement slab |
| Warm spot on a basement or kitchen floor | Hot water line or fitting leaking under concrete |
| Wet drywall bottom in a newly finished basement | Line punctured during finishing work, or a leaking fitting |
| Pressure drop at upstairs fixtures | Leak on the main trunk line |
| Soggy patch of lawn near the foundation | Service line leak on the owner's section |
Cost factors
For newer Clarksburg homes, the main variables are how quickly the leak can be pinpointed, whether it is reached through the slab or bypassed with new pipe, and how much finished space sits above it. Warranty coverage can shift some of the cost, so mention the build year when you call. Plumbing permits and inspections in Montgomery County come from WSSC Water, and the repair is done by a plumber registered with WSSC.
Slab Leak Repair questions in Clarksburg
Can a fairly new house have a leak under the slab?
Where does my share of the water service line begin?
How does a plumber find a leak under concrete without tearing up the floor?
Does fixing a leak under the floor need a permit here?
More plumbing services in Clarksburg
Slab Leak Repair nearby
Sources
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