In Marietta, a hidden leak usually shows up first on the Marietta Water bill or as a meter that keeps moving when every fixture is off. A plumber can confirm it with a meter test, then narrow it down by isolating branches and listening along the lines before anything is opened. Call the number on this page to be connected with a local plumber in Marietta.

Marietta's water system and housing
Most homes inside city limits get water from Marietta Water, the city utility that buys treated water from the Cobb County-Marietta Water Authority and runs the pipes and meters across town. A Marietta mailing address is not a guarantee, though: homes outside the city line are often on Cobb County Water System, so check which name is on your bill before you call about a leak near the meter. Marietta Water's service and maintenance dispatch is (770) 794-5230 and is staffed at all hours.
Housing around Marietta Square and the older streets off Cobb Parkway runs older than much of the county. The median home was built in 1987, and about a third went up before 1980. In those houses, decades-old fittings, stiff shutoff valves and supply pipe running through crawl spaces are the usual trouble spots. Marietta Water's report also notes that the utility handles lead service line removal, while lead materials inside a home's own plumbing are the owner's job.
Common detection methods compared
| Method | What it tells the plumber | Most useful for |
|---|---|---|
| Meter test with fixtures off | Whether water moves when nothing is open | Confirming a leak exists at all |
| Closing branch valves one by one | Which part of the system is losing water | Houses with working shutoffs |
| Acoustic listening gear | The hiss of pressurized water escaping | Pipes in walls, slabs and yards |
| Thermal camera | Warm or cool patches left by a leaking line | Hot water lines under floors |
| Pressure test on a closed section | Whether that section holds pressure | Yard lines and irrigation |
Signs worth acting on
- A Marietta Water bill that jumps without a change in how many people live there or how you water
- The meter's small leak dial turning while the house is quiet
- A musty smell or sagging insulation in the crawl space
- Paint bubbling low on a wall behind a tub or washer
- A toilet that refills by itself every few minutes
Seasonal notes
Summer is when outdoor leaks hide best, because a cracked irrigation line looks like normal watering. Run a meter check with the controller switched off. If your property has a testable backflow device, Marietta Water requires a certified tester to check it every year, and that visit is a good moment to ask about weeping valves. In winter, a hard freeze can split pipe in an unheated crawl space or exterior wall, and the leak may not show until the thaw.
Leak Detection questions in Marietta
How can I check my water meter for a hidden leak?
How do I know which water utility serves my address?
Are hidden leaks more common in older homes here?
Could my irrigation system be where the water is going?
More plumbing services in Marietta
Leak Detection nearby
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