Is the leak located and quoted before you start the repair?

Always. We locate the leak first, then give you a firm repair quote before any work begins. You'll never get an open-ended bill. Accessible water-line repairs start around $300–$650, behind-wall supply lines $400–$800, and a main water service line replacement runs $1,200–$3,500+ depending on depth and length. If the leak is under your slab, that's a different process — see our slab leak pricing page.

Pricing Breakdown

What Does Leak Detection & Repair Cost in Phoenix?

Q: How do you find a hidden leak without tearing up my house?

We start non-invasively — a pressure test isolates whether the leak is on the supply side, then acoustic listening equipment and electronic detection pinpoint the spot within inches before we open anything. That means we open one accessible section instead of guessing across a wall. Leak detection runs $350, and we'd rather spend the time locating it precisely than tear out drywall hoping to find it.

Q: How much does it cost to fix a pinhole copper leak in Phoenix?

A pinhole copper pipe leak repair runs $250–$600 depending on access and how much of the line needs replacing. If the pipe is exposed and we can cut out and replace a short section, it's at the lower end. If it's behind a wall or in a ceiling, expect $400–$800 because the repair includes opening and patching. We quote the exact number after we locate it.

Electronic Detection · Pinhole & Supply-Line Repair · Main Service Lines · Updated May 2026

A leak you can see is a leak you can quote. The hard part with hidden leaks is finding them — and the honest truth is that no two leaks cost the same. A pinhole in an exposed copper line under the sink is a different job than a supply line buried in a ceiling or a service line running across your yard.

So here's how we do it: we locate the leak first, then hand you a firm repair price before any work starts. The ranges below are real Phoenix-area numbers for 2026 — presented as "starts at" and typical ranges, not a flat rate, because the right number depends on where the leak is and how we have to get to it. Pick the situation that sounds like yours.

Don't Know Where It Is — Find It

Leak Detection

$350

Electronic and acoustic location pinpoints a hidden leak within inches — before we open a single wall. The right first step when you've got high bills or wet spots and no source.

See detection breakdown ↓

Found It — Fix It

Leak Repair

$150 – $800

From a pinhole in exposed copper to a supply line behind a wall or in the ceiling. Quoted upfront once we've located it — accessible repairs cost less than buried ones.

See repair options ↓

Yard, Meter, or Service Line

Main Service Line

$1,200 – $3,500+

The line from your meter to the house. Depth and length drive the price. The big-ticket repair — and the one where locating it precisely saves the most digging.

See main line details ↓

Leak Detection

Finding the Leak Before We Open Anything

A leak that's behind drywall, under a cabinet, or in a ceiling can run for weeks before you see a stain. We find it without guessing. A pressure test isolates whether the leak is on the supply side; acoustic listening gear and electronic detection then pinpoint the spot within inches. That means we open one accessible section instead of tearing into a wall hoping to get lucky.

Whole-Home Pressure Test & Leak Evaluation

We pressurize and isolate the system to confirm whether you actually have a leak and roughly where it is. Often included with a standard service call — frequently the first thing we do before quoting anything else.

Typical

Often Included

Electronic / Acoustic Leak Detection

Pinpointing a confirmed hidden leak within inches using acoustic listening and electronic equipment. Price depends on how many fixtures we isolate and how deep or buried the line is. This is the locate — repair is quoted separately, upfront.

Typical range

$350

Why We Locate Before We Cut

Tearing out drywall to "go look" is how you end up with three holes and a bigger repair bill. Spending the time to pinpoint the leak first usually means we open one spot, fix it, and patch one patch. We'd rather lose the bid than do it wrong — and doing it wrong starts with guessing where the water is coming from. If the leak turns out to be under your concrete slab, that's a separate process — see our slab leak detection & repair pricing →

Already know where it is? See repair pricing ↓

Leak Repair

Repair Options — Access Drives the Price

Once the leak is located, the repair cost comes down to one thing more than any other: how hard it is to get to. A pinhole in an exposed line under a sink is quick. The same pinhole behind tile or up in a ceiling means opening, repairing, and patching — and the patch is part of the job. Every one of these is quoted to you in a firm number before we start.

Click each option to see what the job involves and when it applies.

Accessible

Accessible Water-Line Leak Repair

Typical range

$300 – $650

A leaking supply line that we can reach — under a sink, in a cabinet, in an accessible section of wall or ceiling that's already open. Cut out the bad section, replace it, patch where needed. The most common straightforward leak repair we do.

Cut out and replace the failed section of line
Includes minor opening and patching where the line is reachable
Pressure-tested after repair to confirm it's sealed
Best for: under-sink lines, exposed runs, already-open walls

When this appliesThe leak is somewhere we can physically get to without major demolition. If it's buried behind tile or up in a closed ceiling, it moves up to the behind-wall tier below.

Common

Pinhole Copper Pipe Leak Repair Phoenix Classic

Typical range

$250 – $600

The tiny corrosion leaks that Phoenix's hard water and high pressure produce in copper lines. We cut out the pinholed section and replace it. Price depends on access and how much of the line is compromised — one pinhole is rarely the whole story on an aging copper system.

Remove and replace the pinholed copper section
Inspect the surrounding line for additional corrosion
Lower end when the line is exposed; higher when buried
Best for: corrosion leaks in older copper supply lines

The honest caveatIf we're finding multiple pinholes across the same copper system, patching one at a time can become a money pit. We'll tell you straight if you're better served by repiping a run rather than chasing leaks — and we'll never push that if a simple repair will hold.

Buried

Behind-Wall / In-Ceiling Supply Line Repair

Typical range

$400 – $800

A supply line leaking inside a closed wall or ceiling. The repair itself is similar to an accessible line — but it includes carefully opening the surface, making the repair, and patching it back. Precise detection earns its keep here: we open one spot, not the whole wall.

Open the wall or ceiling at the pinpointed location only
Cut out and replace the leaking section
Pressure-test, then patch the opening
Best for: leaks confirmed behind drywall, tile, or ceilings

Why this costs more than an accessible repairYou're paying for the open-and-close, not just the pipe. The tighter we locate the leak beforehand, the smaller the opening — which is exactly why we don't skip the detection step.

Outdoor

Hose Bib / Outdoor Faucet Leak Repair or Replacement

Typical range

$150 – $350

A dripping or leaking outdoor spigot. Often a simple washer or valve repair; sometimes the whole bib needs replacing, especially when freeze damage or corrosion has set in. Quick job, real money saved on a faucet that's been running into the wall or the dirt for months.

Repair or replace the hose bib / outdoor faucet
Check the connection point for leaks into the wall
Lower end for a repair, higher for a full replacement
Best for: dripping spigots, freeze-damaged or corroded bibs

Worth catching earlyAn outdoor faucet that leaks at the wall connection can soak the framing behind it without ever showing inside. If yours has been dripping, it's a cheap fix now versus a behind-wall repair later.

Located First, Quoted Upfront — Every Time

Every leak is different, so we don't pretend to flat-rate them sight unseen. We locate the leak, look at how we have to reach it, and give you a firm number before we touch anything. If a $300 accessible repair will hold, that's what we quote — we don't inflate it into a behind-wall job. We'd rather lose the bid than do it wrong.

Leak out in the yard? See main service line ↓

Main Water Service Line

The Yard Line — Meter to House

The main water service line is the buried pipe that carries water from your meter to the house. When it leaks, you'll often see it as a soggy patch in the yard, an unexplained jump in your water bill, or water pooling near the meter. This is the big-ticket leak repair — and the one where pinpointing the leak before digging saves the most, because every foot of trench costs money.

Main Water Service Line Leak Repair / Replacement

Repairing or replacing the meter-to-house service line. Price is driven by depth and length — a shallow, short run is far less than a deep line under a driveway or a long run across a large lot. We locate the leak first so we dig where the problem is, not the whole length.

Typical range

$1,200 – $3,500+

Why the Range Is So Wide

A main service line repair depends almost entirely on what's between the leak and the surface. Depth, soil, length of the run, and what's on top — grass, concrete, pavers, a driveway — all move the number. A localized repair on a shallow, accessible line lands at the low end; a full replacement of a long, deep, or paved-over line lands at the high end or beyond. We locate the leak, assess access, and give you a real number before any digging starts. Note: if the leak is under your home's concrete slab rather than out in the yard, that's a different job — see slab leak pricing →

Why Phoenix Homes Leak

Hard Water + High Pressure = Pinhole Leaks

Phoenix is hard on plumbing for two reasons that stack on top of each other. The water here is hard and mineral-heavy, which is corrosive to copper over the years. And municipal pressure across much of the Valley runs 80–120 PSI — well above the 60–70 PSI a residential system is built to live with comfortably.

High pressure forcing hard water through aging copper is exactly the recipe for pinhole leaks and premature pipe failures. It's why we see so many of them out here, and why a $200 pressure regulator is sometimes the smartest money you can spend to slow the next leak down. We'll tell you if yours is running hot.

Common Questions

Leak Detection & Repair — FAQ

How much does leak detection cost in Phoenix?

Electronic and acoustic leak detection — locating a hidden leak without tearing into your home — runs $350. A whole-home pressure test and leak evaluation is often included with a standard service call. We locate and quote the repair upfront before any work begins, because every leak is different.

How do you find a hidden leak without tearing up my house?

We start non-invasively. A pressure test isolates whether the leak is on the supply side, then acoustic listening equipment and electronic detection pinpoint the spot within inches before we open anything. That means we open one accessible section instead of guessing across a wall. Detection runs $350, and we'd rather spend the time locating it precisely than tear out drywall hoping to find it.

How much to fix a pinhole copper leak?

A pinhole copper pipe leak repair runs $250–$600 depending on access and how much of the line needs replacing. If the pipe is exposed and we can cut out and replace a short section, it's at the lower end. If it's behind a wall or in a ceiling, expect $400–$800 because the repair includes opening and patching. We quote the exact number after we locate it — and if we're finding pinholes all over the same aging copper, we'll tell you honestly whether repiping a run beats chasing leaks.

Why do Phoenix homes get pinhole leaks?

Two reasons specific to the Valley. First, Phoenix has hard, mineral-heavy water that's aggressive on copper over time. Second, municipal water pressure here often runs 80–120 PSI — well above the 60–70 PSI a home plumbing system is happiest at. High pressure plus hard water accelerates corrosion and produces the pinhole leaks and premature pipe failures we see constantly in older copper systems. A pressure regulator is often the cheapest fix to slow it down.

How much does a main water service line leak cost to fix?

Repairing or replacing the main service line from the meter to the house runs $1,200–$3,500+, driven by depth and length of the run and what's on top of it — grass, concrete, or a driveway. We locate the leak first so we dig where the problem is rather than trenching the whole line. If the leak is under your home's slab rather than in the yard, see our slab leak pricing →

High Water Bill? Wet Spot You Can't Explain? Let's Find It.

We'll locate the leak and tell you exactly what the repair costs — before we start anything.

Call (480) 675-7861 (480) 675-7861

What Does Leak Detection & Repair Cost in Phoenix?

Finding the Leak Before We Open Anything

Repair Options — Access Drives the Price

The Yard Line — Meter to House

Hard Water + High Pressure = Pinhole Leaks

Leak Detection & Repair — FAQ

Related Topics

High Water Bill? Wet Spot You Can't Explain? Let's Find It.