Grayson has some of the newest housing anywhere in the metro, so a slab leak here almost always traces to a buried fitting, construction damage or pipe wearing against concrete. Gwinnett County supplies water and is responsible only up to the meter. Call the number on this page to be connected with a local plumber in Grayson.

Why would a brand-new Grayson home leak under the slab?
Grayson grew from about 765 residents in 2000 to 4,730 in 2020. Census survey figures via Point2Homes give a median year built of 2012, with about 4% of homes from before 1980. With housing this young, worn-out pipe is rarely the cause. More often, a supply line was damaged during construction, a joint ended up buried under concrete, or pipe is wearing where it passes through the slab. These leaks can show up within a few years of move-in.
Who owns the line between the meter and the house?
The homeowner. The City of Grayson says Gwinnett County is the water utility provider for the city, and it has no water department of its own. Gwinnett is responsible for the pipes that bring water to the meter; all plumbing, pipes and fixtures between the meter and the home are the homeowner's. Gwinnett water is soft, about 1.3 grains per gallon on average, and chlorinated, so water chemistry isn't a likely factor.
Where do permits come from?
The City of Grayson takes building permit applications through its own online iWorQ portal, and its inspection process lists a separate number for scheduling city inspections. Whether plumbing-only work goes through the same portal wasn't stated, so ask City Hall or your plumber what a slab leak repair or reroute needs.
In a home this new, ask the builder about warranty coverage before any work. If the warranty has lapsed, a direct repair at a single joint is usually enough; a short reroute is the better choice when the leak sits under tile or cabinets.
A Grayson note
New lawns often have irrigation running on timers. Turn it off before doing a meter test, then watch the meter for several minutes with everything else off. If it moves and toilets check out, schedule a pressure test.
Before the visit, clear access to the water heater and the main shutoff, and mark any spots where the floor feels warm or damp. The plumber will usually begin by isolating the hot side from the cold to see which is losing water. In a new home, the builder may also have a plumbing layout that shows where supply lines run under the slab; if you have it, keep it handy, since it can shorten the search.
Slab Leak Repair questions in Grayson
Do newer homes with plastic pipe still get slab leaks?
Who is responsible for a leak between the meter and the house?
Is a permit needed for slab leak work here?
Will homeowners insurance help with a slab leak?
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