Main Water Line Repair in Kennesaw, GA

Copper has a reputation for lasting a long time, and it usually earns it, but a buried copper service line can still develop pinhole leaks. Main water line repair in Kennesaw then starts with finding the hole, which is often small enough to stay hidden for months while the meter quietly counts the loss.

How a pinhole shows up underground

Pinhole leaks are rarely dramatic. The meter creeps forward when nothing is running, a spot along the line's route stays damp a few days longer than the rest of the yard, or a faint hiss can be heard at the main shutoff. Pressure in the house may be perfectly normal. Because the leak is small, it can run for months, softening soil and adding to the bill before anyone looks for it.

What causes pinholes in buried copper

• Aggressive soil: acidic soil, fill containing cinders or debris, and soils high in certain salts attack copper from the outside.
• Contact with other metals: copper touching steel, or joined to galvanized pipe without a dielectric fitting, can corrode at the contact point.
• Stray electrical current: in some homes, electrical grounding or bonding through metal water pipe can contribute to corrosion.
• Water chemistry and velocity: corrosion can also start inside the pipe, especially where turbulence at fittings or high flow wears the wall.
• Installation damage: a gouge or a rock pressed against the pipe creates a weak point that corrodes first.

One pinhole or a pattern?

When the leak is exposed, the condition of the surrounding pipe tells the story. Copper that is clean and smooth on either side of the hole suggests a local cause, such as a rock or a nick, and a spot repair is reasonable. Copper that is pitted, crusted green or noticeably thin along the exposed length suggests the soil or water is attacking the whole run, and more pinholes are likely. If copper inside the house is also developing pinholes, the problem may extend beyond the service line, and whole house repiping is worth discussing.

Repair and replacement options

A spot repair cuts out the damaged section and joins new copper with couplings suitable for burial, then beds the repair in clean sand or fine soil so nothing corrosive or sharp touches it. If the line is being replaced, the choice is between new copper, ideally with better bedding and protection than the original, and a plastic service material such as polyethylene or approved PEX, which does not corrode in soil. The method can be an open trench or a bored path between pits, depending on the route; both are described in our water line repair overview.

One detail is easy to overlook. In many older homes, the electrical system's grounding relies partly on metal water pipe. If a metal service line is replaced with plastic, have an electrician confirm the grounding is still adequate.

Permits and the code baseline in Kennesaw

The Kennesaw Building Services Department takes permit applications online and offers a homeowner affidavit for owners pulling their own permits. Its page lists the 2024 International Plumbing Code with Georgia amendments among the codes in effect from January 2026, so the new line's materials and installation should be planned around that edition.

Copper pinhole questions in Kennesaw

Should a failed copper line be replaced with copper again?

It depends on why it failed. If the soil around the pipe is corrosive, replacing copper with copper in the same conditions can repeat the problem, and a plastic service material avoids it. If the failure was mechanical, such as a rock or a nick, new copper with proper bedding is a sound choice. The exposed pipe usually makes the cause clear.

Does finding a pinhole mean digging up the whole yard?

No. The line's route is traced from the meter to the house, and acoustic equipment listens along it for the hiss of water escaping under pressure. Once the spot is narrowed down, a small pit is usually enough to expose it. Only a full replacement disturbs the length of the route, and boring between two pits can limit even that.

Can a pinhole be clamped instead of cut out?

A repair clamp can stop a pinhole, and clamps are a common quick fix. On a small copper service line where the wall may be thinning around the hole, cutting out the damaged length and joining new pipe is usually the more reliable buried repair. The plumber should explain which approach suits the pipe they find.

Tracking down a pinhole

Suspect a pinhole in the copper line to your Kennesaw home? A call to Alpha Plumbing and Sewer at (404) 409-4448 gets it located and the cause sorted out, and if the meter test shows the leak is indoors, leak detection takes over.