Leak Detection in Austin

Last reviewed and updated: 2026-09-28

Austin is an established residential pocket of Marietta. In this part of the city the plumbing question is usually about age rather than anything exotic: what material was standard when the house was built, how many times it has been repaired since, and whether the water utility is the city or the county.

The practical starting point is the same everywhere: confirm the leak exists at the meter, then narrow it to inside or outside the house before anyone opens anything.

Start at the water meter

Before anything else, confirm the leak exists. Turn off every tap, appliance, icemaker and irrigation zone, then find your meter, usually in a covered box near the curb, and watch the low-flow indicator. It is a small triangle, star or dial designed to turn at very low flow rates. If it moves while nothing is running, water is escaping somewhere on your side of the meter.

1. Record the full reading and leave the property untouched for one to two hours.
2. Read it again. Any change confirms a leak, even if the indicator was moving too slowly to see.
3. Close the main house shut-off and re-check. Still moving means the leak is in the buried service line between the meter and the house. Stopped means it is inside or under the house.
4. Isolate irrigation separately if you have sprinklers, since they usually tee off before the house valves.

That single test costs nothing and narrows the problem more than anything else you can do yourself.

Document it before anything is closed up

This is the step most people skip, and it costs them twice.

Your water utility will not apply a leak credit without evidence the problem was corrected, Cobb County accepts a repair receipt, a parts receipt, or at minimum a letter explaining what was done. Your insurer works from the probable cause and from whether the failure looks sudden or gradual, because gradual deterioration is one of the exclusions that defeats most claims.

All of that is easy to capture while the repair is open and effectively impossible once the slab is repoured and the wall is patched. Ask for photographs before opening, with the failed pipe exposed, and after the repair; a written statement of what failed and why; and the itemized invoice, emailed rather than handed over as a paper slip.

If water is escaping right now

Order matters in the first ten minutes.

1. Close the main water shut-off. Inside where the supply enters the house, or at the meter box near the curb. Clockwise to close.
2. Cut power to the area at the breaker if water is anywhere near outlets or appliances. Do not stand in water to reach a panel.
3. Open the lowest taps to drain the remaining pressure out of the system.
4. Photograph everything before you touch it: standing water, damage, the meter reading. That evidence cannot be recreated later.
5. Start drying. In Georgia humidity mold can begin establishing within roughly 24 to 48 hours.

The seasonal pattern in your bill

Twelve months of water bills is one of the most useful diagnostic documents you can bring to a conversation about a leak, and almost nobody thinks to look at it.

A bill that climbs every spring and settles every autumn points at irrigation, either a genuine leak in the system or a controller running longer than anyone realizes. A bill that steps up once and then stays high points at a continuous failure: a service line, a slab leak, or a toilet that never stops filling. A bill that spikes for a single month and returns to normal is usually a one-off, such as filling a pool or pressure washing.

Most utility portals show a year of usage history as a chart. Look at the shape before you assume anything: it frequently identifies the culprit before anyone opens a toolbox.

Which water utility bills you here

Billing is mixed across this part of Marietta. Some addresses fall inside the City of Marietta utility service area and are billed by Marietta Power & Water; others are served by Cobb County Water System. They run separate leak credit processes with separate paperwork, so check the utility name printed on your bill before applying for a credit.

Local notes

Because the streets here are narrow and the lots compact, a buried service line leak usually surfaces reasonably close to the break, one of the few things that works in an older neighborhood's favor when something goes wrong underground.

Frequently asked questions