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Farrell Plumbing

Leak Detection

Slab Leak in Your Port Richey Home? Here's Exactly What to Do First

When you suspect a slab leak in a Port Richey or New Port Richey home, the next ten minutes matter more than most people realize. Here is the exact sequence we walk customers through over the phone, and what to do before our truck even arrives.

By Justin Thurow May 14, 2026 · 7 min read

When a Port Richey homeowner suspects a slab leak, the next ten minutes matter more than most people realize. The right moves keep the damage small and the repair manageable. The wrong moves can turn a $1,500 spot repair into a $20,000 mold and flooring restoration project. Here is the exact sequence we walk customers through over the phone, and what to do before our truck even arrives.

Step 1: Shut off the water at the meter. If you have visible water on the floor, are hearing the sound of running water with every fixture off, or are watching the water bill climb without explanation, the first move is to shut the home off at the meter. Not the angle stops under the sinks. Not the toilet supply valves. The main water shut-off, either at the house entry or at the curb meter.

In most Port Richey and New Port Richey homes, the main shut-off is on an exterior wall near the front of the house or in the garage. If you cannot find it inside, go to the meter box at the curb. The meter has a yes-or-no valve, usually a rectangular plug that turns ninety degrees with a meter key or a large flathead screwdriver. Turning it perpendicular to the line stops water from entering the home. Every Trinity, Land O' Lakes, and Spring Hill homeowner should know exactly where this valve is before they need it. Now is a good time to find yours and confirm it works.

If your home has a failed pressure regulator on top of the slab leak, shutting off at the meter stops the pressurized leak immediately. The water already in the slab keeps sitting there, but no new water enters the system.

Step 2: Confirm the leak with a meter test. Once the home is shut off, walk back to the water meter and watch the dial. A digital meter has a small leak indicator that spins when any water is moving. A dial meter has a small triangle or star-shaped indicator that does the same. With every fixture off and the main shut-off open, the indicator should be completely still.

If it is moving, you have a leak somewhere in the home. If you can confirm every fixture, every toilet, and every appliance is off and the meter is still moving, the leak is almost always in the supply lines, and in a slab-on-grade home it is most likely under the slab. This is the test that confirms a slab leak diagnosis, and you can do it in two minutes for free before any plumber arrives.

Step 3: Turn off the water heater. A hot water slab leak is more common than a cold water slab leak in our service area. Hot water lines run through or under the slab in most Port Richey, Hudson, and Gulf Harbors homes, and the heat accelerates the corrosion that creates the leak in the first place. If the leak is on a hot line and your water heater is on, the unit will keep running the burner or element trying to heat water that is escaping into the slab. That wastes energy, can damage the heating element, and in rare cases can trigger a temperature relief valve event.

Turn off the gas valve to a tank water heater, or flip the breaker to an electric or tankless unit. If you are unsure how, call our office first and we will walk you through it over the phone. Once the leak is repaired, you can also use the moment to evaluate whether the water heater itself needs water heater service in Port Richey or a full replacement.

Step 4: Document the symptoms before you call. The more specific you are when you call, the faster we can locate the leak. Before you dial, write down what you noticed:

The water bill amount this month compared to last month, if you can pull both. Where you heard the sound of running water, including which room and what time of day. Any warm or hot spots on the floor, including which room and which area. The age of the home and whether any plumbing work has been done in the past two years. Any visible water, drywall damage, or mildew smell at floor level.

This sounds like a lot, but a homeowner who shows up with this information saves us twenty minutes on diagnosis and saves themselves money on the locate fee.

Step 5: Call a plumber who locates before they cut. This is the most important step in the list. The wrong plumber will start opening drywall or cutting into the slab to "find" the leak. The right plumber locates the leak first with non-invasive equipment, then cuts only where needed.

At Farrell Plumbing, every slab leak detection job in Port Richey begins with a meter isolation test to confirm the leak is real. Then we use acoustic ground microphones to listen for the pressurized water sound through the slab, thermal imaging to find hot water leaks by their temperature signature, and pressure mapping to narrow the leak to a specific run. A properly located leak is usually pinpointed within an inch or two. That precision determines whether the repair is a small access cut or a full floor demolition. Choose carefully. The diagnostic fee for proper locating is small compared to the cost of unnecessary demolition.

Step 6: Get three options in writing before the repair. Once the leak is located, a slab leak in Port Richey or New Port Richey usually has three viable repair paths, and the right answer depends on your pipe material, your slab condition, and your history of leaks. A reputable plumber will walk you through all three with fixed written prices.

The first option is a spot repair through a small slab access cut. Best for a first-time slab leak in an otherwise healthy copper or PEX system. Lowest cost and shortest disruption. We make a small access cut in the slab, repair the failed section, pressure test the line, and patch the concrete.

The second option is an overhead slab leak reroute. Best for a hot water slab leak on a copper line that is showing systemic corrosion. We abandon the under-slab line and run a new PEX line through the attic and down the interior walls to the fixture. No concrete is cut. The leak under the slab stays sealed off and no longer carries pressurized water.

The third option is a whole-house PEX repipe. Best for a second slab leak, a polybutylene or galvanized home, or a copper home where you can see corrosion at multiple junctions. We replace every supply line in the home with PEX in one to two business days. This is the option that prevents the next slab leak entirely.

Step 7: Document the work for your insurance carrier. If you plan to file an insurance claim on the water damage portion of the repair (most policies cover the cost of accessing and repairing a sudden and accidental leak), the documentation matters. We provide timestamped photos of the leak location, the readings from our acoustic and thermal equipment, written pressure test results, and the scope of the repair. Your adjuster needs every piece of this to process a clean claim. We do not bill insurance directly, but the documentation packet we provide makes the claim process meaningfully faster.

What not to do. Do not pour water leak detection dye or sealant products into your supply lines. They do not work on slab leaks and they can void manufacturer warranties on your water heater and softener. Do not try to break up the slab with a hammer to find the leak yourself. Do not let a contractor open more than a small access cut without confirming the leak is precisely located first. And do not wait three days to see if it gets better. Slab leaks do not heal. They get bigger and they get more expensive.

The faster you move on the right first steps, the smaller the eventual repair. A slab leak caught at the meter is a manageable expense. A slab leak that has been running for three weeks is a small foundation problem. Move quickly and call someone who locates before they cut.

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FAQs

Common questions on this topic.

Quick answers from our expert plumbers. Still have a question? Call our team and a real person will pick up.

01 How fast should I call a plumber for a suspected slab leak?
Same day if possible. Slab leaks do not heal on their own and the cost of damage grows roughly in proportion to how long the leak runs. If you have shut off the home at the meter, the situation is stable and you can call during normal business hours. If you have not been able to shut off the home, call our after-hours emergency line within the hour.
02 Where is the main water shut-off in a typical Port Richey home?
On most Port Richey and New Port Richey homes the main shut-off is on an exterior wall near the front of the house, often near the hose bib closest to the meter. Garages and front entry walls are the most common locations. The curb meter shut-off works in any home but requires a meter key or large flathead screwdriver.
03 Will homeowners insurance cover the slab leak repair itself?
Most policies cover the cost of accessing and repairing a sudden and accidental leak, but the actual repair to the pipe is often considered the homeowner's responsibility. Coverage varies meaningfully by carrier and policy. We provide the documentation packet your adjuster needs regardless of how your specific policy handles the cost.
04 Should I repair the slab leak or reroute the line?
It depends on the pipe material and history. A first-time slab leak in an otherwise healthy copper or PEX system is usually a spot repair. A repeat slab leak, a copper home with active hard water corrosion, or any leak on a polybutylene or galvanized system is usually a candidate for either an overhead reroute or a full whole-house repipe. We explain the trade-offs honestly and provide fixed prices for all three options.
05 Do I need to leave the home during a slab leak repair?
No. Water is restored before our team leaves at the end of the day. We contain dust and water from the access cut to the active work zone, and the rest of the home remains usable throughout the repair. Most slab leak repairs in Port Richey, Trinity, and Spring Hill are completed in a single day.

Have a more specific question? Contact our team or give us a call.

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