Water Leak Detection & Repair in Lithonia, GA

Water leaks in a house with galvanized steel supply pipe follow their own pattern. Galvanized pipe is steel coated with zinc, and it was a common choice for water lines in homes built before copper and plastic took over. Over time the zinc wears away and the steel rusts from the inside, narrowing the bore and thinning the wall, especially at the threaded joints. Alpha Plumbing and Sewer finds the leak in a Lithonia home, judges the condition of the rest of the pipe, and lays out the choices plainly.

Why galvanized pipe leaks where it does

Threads are the weak point. Cutting threads into the pipe removes part of the wall along with some of the zinc coating, so corrosion gets a head start at every joint. Leaks therefore tend to appear at fittings: elbows, tees, couplings and the short nipples that connect fixtures. Where galvanized pipe meets copper without a proper dielectric fitting, the contact between the two metals can speed up corrosion at that joint as well.

Clues that come before the leak

• Flow that has weakened over time, often more noticeable at distant fixtures or when several taps run.
• Brown or rusty water after the taps have sat unused, such as first thing in the morning or after a trip.
• Faucet aerators and showerheads that clog with flakes of rust.
• Rust stains or a damp, crusty spot on exposed pipe in a crawlspace or basement.

Weak flow caused by galvanized buildup is a pipe condition, not a regulator problem, although the two can feel similar at the faucet.

Tracing a leak in old steel pipe

A meter test still comes first to help confirm that water is escaping, once irrigation, ice makers and other automatic uses are ruled out. Because galvanized leaks cluster at joints, the next step is to follow the pipe routes from the point where the line enters the house and inspect every accessible fitting in the crawlspace, basement or utility areas. Inside walls, moisture readings and listening equipment narrow down the spot. Old galvanized pipe also calls for gentle handling during testing: forcing a stiff valve or putting a wrench on a nearby fitting can start a new leak at a joint that was barely holding.

Patch, replace a section, or repipe

A single leaking fitting can be replaced, but the threads on the pipe to either side are usually just as old. A plumber will often replace a short run back to sound pipe instead, using transition fittings made for joining steel to copper or PEX. That buys time when the rest of the system is still in fair shape. When the house shows low pressure everywhere, rusty water and leaks at more than one joint, patching becomes a cycle of openings and repairs. Replacing the supply piping through whole house repiping removes the steel entirely and may improve pressure as well.

What else to check in an older house

A house old enough to have galvanized supply pipe may also have aging drain lines, and a stain under a bathroom can come from either one. Watching whether the stain grows only when a fixture drains, or also when nothing is running, helps separate the two; drain trouble belongs to drain repair. The main shutoff and fixture stops in an older home are often stiff or seized, so replacing the main valve during the leak repair is worth considering.

Questions about galvanized pipe leaks in Lithonia

Can galvanized pipe be cleaned out instead of replaced?

Not in any practical way for most homes. The buildup inside galvanized pipe is corrosion of the pipe wall itself rather than a loose deposit, so scouring it out would leave the wall thinner still. Once flow and leaks have become a problem, replacement is the dependable route. Short sections can be replaced as they fail while you plan a larger job.

How do I know if my house has galvanized pipe?

Look at the pipe where it enters the house or near the water heater. Galvanized pipe is dull gray, has threaded joints, and a magnet will stick to it. Copper is reddish brown with soldered joints and does not attract a magnet, and plastic pipe is easy to tell by its feel. Many houses have a mix, with galvanized in older sections and newer material where repairs were made.

Will replacing one leaking section fix low water pressure?

It depends where the restriction sits. Replacing a restricted main section can improve flow at many downstream fixtures; replacing one branch may help only that branch. A static pressure reading alone does not measure this restriction. If pressure is low at a single fixture, the restriction may be local. If it is low across the house, the piping as a whole, or a separate pressure issue, is the more likely cause.

Get an old pipe leak looked at

If your Lithonia house still runs on galvanized pipe and a leak has appeared, have Alpha Plumbing and Sewer assess the joint and the pipe around it; the number is (404) 409-4448. The Georgia leak detection overview explains the methods used to find concealed leaks.