Last reviewed and updated: 2026-09-20
Professional leak detection in the Marietta area is normally sold as a flat diagnostic fee rather than an hourly rate, and that fee is separate from the repair. As a published local reference point, one metro Atlanta specialist advertises a flat rate starting at $400 covering acoustic listening, thermal scanning, moisture detection and written documentation of the leak location. Pool leak detection and gas leak work are normally priced separately again.
These are market ranges, not quotes. Every figure below is compiled from publicly published third-party sources and local operators' own advertised pricing, and is offered for general guidance only. Your actual cost depends on the leak type, access and how much isolation work is needed. Ask for a firm number before booking any visit.
What actually drives the price
| Factor | Why it moves the price |
|---|---|
| Leak type | A pressurised supply leak can be heard acoustically. A drain line leak only leaks when water runs, so it needs camera work or smoke testing, a different process. |
| Access | An exposed line in a crawlspace is quick. A line under finished flooring, a slab, a driveway or landscaping takes longer to reach and confirm. |
| Isolation work | Large homes with several zones, or systems with no clear shut-offs, need more valve work before listening can even begin. |
| Confirmation method | Acoustic alone is cheaper than acoustic plus thermal plus tracer gas. Small or quiet leaks need the expensive methods. |
| Urgency | After-hours, weekend and emergency call-outs carry a premium almost everywhere. |
| Pool vs house | Pool leak detection involves pressure-testing multiple plumbing runs and often diving the shell. It is a separate service line item. |
| Documentation | A written report suitable for a utility leak credit or an insurance claim may be included or may be an add-on. Confirm which. |
Detection, repair and repipe are three different costs
If you are here because of a water bill that jumped, the diagnostic is the first of the three, and usually the smallest.
This is where most confusion starts. Detection tells you where the leak is. Repair fixes that specific point. A repipe replaces the system so it stops failing repeatedly. They are quoted separately because until the leak is located, nobody can honestly price the repair.
- Detection. Flat diagnostic fee. Output is a marked location and, ideally, a written report.
- Repair. Quoted once the cause and access are known. A slab leak reached through a small opening costs far less than one under a kitchen island.
- Reroute or repipe. Considered when the pipe material itself is the problem: polybutylene, or 1970s copper that has already failed once under the slab. Repairing a single point on a failing system often only buys time.
Why detection is usually the cheap part. Exploratory demolition, opening a slab, a wall or a driveway in the wrong place, costs more than the diagnostic that would have prevented it, and it still leaves the leak unfound.
Five questions that protect you before you book
- Is the diagnostic fee flat, and what exactly does it cover? Get the number and the inclusions in plain language.
- Is the fee credited against the repair if I go ahead? Policies differ. Ask rather than assume.
- What happens if no leak is found? The answer separates specialists from guessers.
- Do I get written documentation of the location? You need it for a Cobb County or Marietta Power & Water leak credit, and for any insurance claim.
- Are you licensed and insured in Georgia? Plumbing is licensed at state level through the Division of Master and Journeyman Plumbers. Ask for the number.
- Do you cover my area? See what leak detection in Marietta, GA covers across the city and Cobb County.
Two things that can reduce what you actually pay
A water utility leak credit. Cobb County Water System offers a partial credit for eligible leaks once in a rolling 12-month period, applied to no more than two affected months, but only with proof the leak was repaired. Marietta Power & Water runs a separate process for customers inside the city limits. The credit is applied to the inflated bill, not to the repair.
An insurance claim. Where a leak has caused damage your policy covers, insurers commonly pay for locating the leak, accessing the pipe and restoring what had to be opened. A standalone inspection with no damage to claim is treated as maintenance and is generally not covered.
Frequently asked questions
How much does leak detection cost in Marietta, GA?
It is normally a flat diagnostic fee separate from the repair. As a published local reference, one metro Atlanta specialist advertises a flat rate starting at $400 covering acoustic listening, thermal scanning, moisture detection and written documentation. Your cost depends on leak type, access and isolation work. Ask for a firm number before booking.
Is leak detection free if I have you do the repair?
It depends on the company. Some credit the diagnostic fee against the repair, some do not, and some detection-only specialists do not perform repairs at all. Ask this specific question before the visit rather than assuming either way.
What if the leak cannot be found?
Policies vary, which is why you should ask up front. A competent specialist should at minimum document what was ruled out, which lines hold pressure, which zones were eliminated, because that narrows the problem substantially even when the exact point is not found on the first visit.
Is detection or repair the bigger cost?
Repair, almost always. Detection is a fixed diagnostic. Repair cost swings widely with access: a slab leak reached through a small opening in a utility room is a different job from one under a tiled kitchen island. That is exactly why nobody can quote the repair before the leak is located.
Does homeowners insurance pay the detection fee?
Often yes, but only as part of a covered loss. If the leak caused damage your policy covers, insurers commonly pay for leak detection, access and restoration. If there is no damage to claim, it is treated as maintenance and generally is not covered.
Is pool leak detection priced the same as house leak detection?
No, it is normally a separate service. Pool work involves pressure-testing several plumbing runs, dye testing and often diving the shell, so it is quoted on its own rather than bundled with household plumbing detection.
Why does an emergency call cost more?
After-hours, weekend and same-day emergency response carries a premium across the trade. If the leak is not actively flooding, closing the main shut-off valve and booking a normal-hours visit is usually the cheaper route.
Can I just find the leak myself and save the fee?
You can confirm that a leak exists with the water meter test and often narrow it to inside or outside the house. What you cannot do without equipment is pinpoint it under a slab or in a wall. Do the meter test first: it is free and it genuinely narrows the problem.