- 2386 Clower St, Snellville, GA 30078
- (678) 835-4146
Leak Detection
When a hidden leak is wasting water in a Snellville house, we start with the supply lines, the house pressure, and the buried run from the meter. Snellville Pipe Pros handles leak detection in Snellville for homeowners in houses, townhomes, and condos, including the 30078 streets around our shop. We also take on pipe repair, water line replacement, drain cleaning, hot water heater service, fixture work, and emergency plumbing when the leak is already in the open.
On Classic Drive in Summit Chase, the 1970s to 1990s copper and PVC still carries city water from Lake Sidney Lanier, and a small pinhole can run for weeks inside a slab or a wall cavity. Soft to slightly hard water does not scale those lines the way hard well water would. The first clue is often a meter that ticks with every fixture shut.
Pressure and listening come before we cut a floor or a yard. We wipe down the work area and put the shutoffs back so the rest of the house can run. A spinning meter at night still gets a crew because we stay on 24/7. After that we walk through the first tests on arrival so the gauges make sense before anyone opens a trench.
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Finding a water leak is a sequence, not a guess with a shovel. We start at the water meter because that is the only point that sees every gallon the house uses. If the meter disc moves with every fixture closed, water is leaving the system between the meter and the last shutoff. The order below is the same on a slab house and on a crawl space house, and each step rules something out before we make a hole.
The first reading is at the meter yoke, with the house valve closed and the curb side still live. That split tells us whether the leak is on the utility side or on the private buried run that you own from the meter to the foundation. We record static pressure there before anyone opens a hose bib. A steady needle on the street side with a falling needle on the house side points at your service line, not at a toilet flapper. On streets off U.S. Highway 78 the meter is often in clay that stays wet, so a visual puddle is not required for that call.
Inside, we hang a gauge on a hose bib or on the boiler drain of the hot water heater and close every fixture. Closed-system water leak detection measures whether the house is holding pressure or bleeding into a wall, a slab, or the yard. If the needle falls, we divide the house at the main shutoff and at the valves that isolate the water heater. A drop that stops when we close the heater valves means the leak is on that equipment, not in the slab. A drop that continues with those valves closed sends us back to the buried run or the interior mains.
Acoustic listening comes after the gauges, not before, because a quiet house with a falling needle is easier to hear. We use a ground microphone on the slab and a contact probe on copper and on the meter setter. A hiss that peaks along a saw cut or a cold joint on a 1970s slab-on-grade floor is classic slab leak detection, not a drain gurgle. In a crawl space we look for staining on the joists and for wet Appling sandy loam under a joint. Newer PEX houses at The Grove at Towne Center rarely need this on the buried run.
Once we know which side of the foundation is losing water, we mark the path from the meter to the slab penetration. Clay-enriched subsoil can hold a wet halo without a surface puddle, so we probe and listen rather than trench first. Interior mains get a second isolation at the manifold or at the first copper tee so we do not open a floor for a hose bib that was left cracked. You leave with a marked path, and if the private service line is the loser we talk through a section repair versus pulling the whole line.
The line you own from the meter to the foundation works every hour the house has water, so a pinhole there wastes more than a dripping sink. In Snellville that run sits in clay-enriched subsoil that stays damp, and a leak can soak the trench for months before a puddle shows at the grass. Pressure at the far bath drops first because that fixture sits farthest from the meter.
A meter that turns with every tap closed is the usual first notice. Soft ground in a straight line toward the house, a strip of extra-green grass, water sound with no fixture running, a jump on the bill, and low flow at the back bath all point at that service line. A wet meter box with the house valve closed can still be the utility side, which is why isolation comes first.
We confirm with the gauge and the ground microphone, then expose the failed joint. Short patches on thin old pipe often split beside the coupling, so we check remaining wall thickness before we call a clamp a repair. When the pipe is too far gone, water line replacement is the cleaner path, and that pattern is common on North Road and Pinehurst Road lots with older galvanized or copper services.
A slab leak soaks the finished floor from below, and in a family house that water shows up as a warm tile, a musty closet, or a cupping hardwood plank. Slab-on-grade floors in Gwinnett suburban houses sit on Piedmont residuum, and moisture lingers against the underside where clay subsoil drains slowly. The supply loop under the slab is often copper, and a pinhole there will run until the meter gives it away.
A warm streak on the tile is the sign people feel first. Hissing under the floor with every fixture shut, a wet carpet edge, white mineral on a grout joint, a hot water heater that cycles with no one drawing water, peeling baseboard, and an unexplained high water bill belong on the same cluster. That cluster is how we separate a slab leak from a spilled plant dish.
We map the hiss with a ground microphone and confirm with the closed-system gauge so we do not saw the wrong room. Isolation at the heater and at the manifold tells us whether the leak is hot, cold, or both. A small copper repair can hold when the rest of the loop is still thick, and Lakes of Summit lots on Masters Lane still show this on later twentieth-century copper.
Polybutylene showed up on interior and some service runs from 1978 to 1995, and it fails at the fittings and in the gray tube itself. A hidden leak on that material often starts as a stain on the ceiling below a bath, then becomes a spray when the fitting lets go. City water here is soft to slightly hard, so scale is not protecting those joints.
Gray or blue pipe in an attic or crawl is the giveaway. Wet drywall under a bath, white crust on acetal fittings, a sudden spray at a joint, low pressure on one branch, a mold smell in a closet, and a meter that spins with the house quiet all show up on this piping. Summit Chase houses from that copper and PVC era sometimes have polybutylene on a later addition.
We do not repair polybutylene with more polybutylene. The failed section comes out, and the new piece is copper or PEX with transitions that can take house pressure. If several fittings are already crusted, the honest course is a larger interior replacement rather than one coupling in a wet bay.
Copper in a wall cavity can pit from the outside when the line sweats in humid summer air, even when the water inside is soft. Gwinnett County Department of Water Resources figures put hardness near 1.34 grains per gallon, so interior scale is not the usual cause of a pinhole here. A stain on a hallway wall is often the first public sign after weeks of quiet loss.
Blistered paint, hissing in the wall, a warped cabinet kick, a musty vanity, a warm drywall patch, a bill that climbed, and a pressure drop with fixtures closed are the cluster we hear about. None of those prove the exact bay, which is why we listen after we isolate. A plant watering spill does not move the meter.
Acoustic leak listening on the copper, plus the closed-system gauge, pins the bay before we cut. We open a small hole on the mark, repair with a coupling or a new stub, and check that the needle now holds. Pinholes in several rooms mean the remaining copper needs a larger plan, not six separate patches.
Galvanized mains rust from the inside and starve fixtures long before they show a puddle, so people call it low pressure when it is also a hidden leak. About 34 percent of Snellville housing units were built before 1980, and galvanized steel was typical on those older interiors. Brown water at the first tap of the morning and a pinhole in a closet are the same pipe wearing out.
Low flow at the top floor, rust flakes in a faucet screen, wet spots along a closet wall, a ticking meter, the smell of wet rust in a cabinet, and a supply that improves after you shut a distant branch all point at galvanized. A section that weeps behind a tub is easy to miss because the water follows the subfloor. Pacolet sandy loam under a crawl will stay dark around that drip.
We isolate the galvanized run and measure whether a coupling has metal left to hold a thread. If the pipe is too thin, a short repair is a delay. Replacing that run with copper or PEX restores both pressure and tightness, which is the finish the house needs.
Crawl space supply lines see the coldest air under the house, and an occasional hard freeze will split a hose bib, a trap primer line, or an uninsulated copper run. Service lines in this part of Georgia often sit shallower than northern practice, so the burst can be outside too. After the thaw, the leak may be a quiet drip on the vapor barrier instead of a dramatic spray.
Ice on a hose bib, a stained rim joist, muddy footing soil, a hiss at a split elbow, low pressure after a cold night, a wet insulation batt, and a meter that moved while the family was asleep are the usual signs. Scenic Highway (Georgia State Route 124) lots with crawl space houses still have those runs on copper, PVC, and PEX. A shop-vac on the puddle does not find the hole.
We open the crawl, dry enough of the area to see, and pressure-test after the split is cut out. New insulation and a shutoff at the bib keep the next freeze from opening the same joint. If the split is on the private service line just outside the wall, we treat it as a service leak, not as a fixture.
A few quiet checks help us when we arrive, and none of them require tools. Stay away from live electrical and from any ceiling that is already sagging. If water is near a panel, leave that room and shut the main if you can reach it safely. These are the only steps worth taking in a Snellville house while the leak is still hidden.
Most damage from a hidden leak happens after someone chases it with a knife or a wrench. Drywall cuts in the wrong bay miss the pipe and open a bigger repair. Raising house pressure to force more flow through a pinhole makes a spray. Leave the trench and the fittings alone until we isolate them.
A leak location is only half the job, because the pipe beside the hole has to hold a coupling. We look at remaining wall thickness, at how many weeps sit on the same line, and at the material. Galvanized that flakes rust into valve screens will not hold a new thread, and polybutylene that has already lost one fitting is usually done as a class. Copper that is still bright around a single pinhole can take a focused repair.
On a slab loop, one hole in sound pipe can be a coupling or a small reroute that abandons the bad segment. PEX at The Grove at Towne Center fails at fittings more than in the tube, so we replace the fitting and pressure-test the rest. Mixed copper to PEX transitions in later additions need a close look because those joints move when slab temperature swings. House pressure belongs in that call too, since a high PRV will open the next weak spot after a tight-looking repair.
Green crust along several feet of copper means the loop is thinning, and a patch in the hallway will be the first of several. The private service line follows the same logic when pinholes appear every few feet, or when galvanized dumps scale. One rock cut or one crushed flare can still be a short new piece with new bedding. Pinholes along old copper, or rust scale in galvanized, mean water line replacement from the meter to the foundation.
Clay subsoil holds moisture against that pipe, so a clamp in a wet trench is a delay, not a finish. We measure static pressure and set a working range the remaining pipe can live with. On the first visit we show what failed, what the rest of the run looks like, and which repair will still be tight after the backfill settles. That is the choice this work turns on in Snellville houses.
The listening kit and the pressure gauges ride on the truck, so the first visit is a test, not a parts run. We hang the gauge before we unload a saw. A falling needle with fixtures closed is the reading that justifies a cut. That sequence is how we keep a finished Snellville floor intact when the leak is still only a sound.
Snellville Pipe Pros stages from 2386 Clower St, a short run to most of the city. The truck already carries the ground microphone and the isolation fittings for a meter-yoke test. Homeowners get a crew that already knows how these subdivisions were piped. We do not show up empty handed and then leave for tools.
A spinning meter does not follow shop hours, and we stay on 24/7 for that reason. Isolation at the yoke still comes first after dark. We mark the path, shut down only what we must, and leave a note on what the gauge ruled out. Bring us in for same-day diagnosis when the meter is already moving.
Floors get wiped, shutoffs go back to the position you need, and debris leaves with us. If we opened a small slab or a crawl hatch, we close it so pets and kids cannot drop in. The house should run on the rooms we did not isolate. We tell you which valve we left closed and why.
We settle the supply path before we blame a faucet or a hot water heater. A fixture leak is obvious once the mains are proven tight. That order prevents a second visit when the real failure was the service line. If the wet spot was never a supply leak, drain cleaning is the right next step.
Gwinnett clay loam around Snellville is well drained at the surface, yet the clay-enriched subsoil slows water so a leak can linger against a slab or a crawl footing. Humid summers with July highs near 89 keep irrigation and house lines under extra hours of pressure, and that load finds every pinhole. Occasional hard freezes then split hose bibs and uninsulated crawl pipes because those runs sit shallower than northern practice. Those soil, summer, and winter stresses are why leak detection here starts on the water lines rather than on the wet spot alone.
We start at the meter with every fixture closed and watch whether the disc still turns. That reading tells us water is leaving the private line even when the house is quiet. A ground microphone then follows the pipe path so we open a small hole at the loudest point instead of trenching the whole yard. Clay subsoil around Snellville can hide the water, so sound and pressure matter more than a puddle. If the remaining pipe is thin, we stop and talk through a longer replacement instead of stacking clamps.
A meter that still turns with every fixture closed means water is leaving the system on the house side of that meter. Toilets, ice makers, and hose bibs get a quick check first because those are the easy openers. If those are shut and the disc keeps moving, the leak is in a wall, a slab, or the private service line. Gwinnett County Department of Water Resources bills the gallons the meter sees, so that spin is real use even when no one is showering. We isolate in sections until the disc stops, and that section is where we listen.
House pressure is a number we can watch, not a feeling at the shower. With a gauge on a bib and every fixture closed, a falling needle means a hidden leak is open to the air or the soil. If the needle holds, the wet spot may be a drain stain or a one-time overflow, not a live supply break. Splitting the house at the main and at the heater valves shows which half is bleeding. That order keeps us from opening a floor when the only failure is a connector at the hot water heater.
We handle leak detection after hours in Snellville because a spinning meter does not wait for morning. The same isolation at the yoke, the same closed-system gauge, and the same listening work run at night. If the leak is already flooding a slab, we shut the house down, mark the path, and keep the rest of the living space usable. Overnight work uses the same water-line-first order we use in daylight. A wet crawl or a hissing wall gets that sequence whenever it starts.
Older slab-on-grade houses in Snellville often carry copper in the slab, and a pinhole there is a true hidden leak, not a surface drip. Slab leak detection uses a ground microphone after the gauges prove the house is losing water. A warm tile streak, a musty closet, and a meter that moves with the fixtures closed are the usual cluster. We still isolate hot from cold so we do not saw both loops. If the remaining copper is thin, a reroute in the wall or attic beats a patch in the middle of a living room.
Thin galvanized and polybutylene both split beside a new clamp because the wall left in the pipe is already weak. A short repair holds when we can see solid metal or plastic on both sides of the cut and the rest of the run is not crusted with old weeps. On polybutylene, one failed fitting is often a warning that the next fitting is ready. Galvanized with heavy rust inside will not hold a thread. In those cases we open a longer run rather than stacking couplings that will leak again.
If you hear hissing in a wall, closing the house shutoff is the safe move, especially at night. That stops the spray, limits the wet drywall, and makes listening easier when we arrive because the line is not still charging the cavity. Leave the electric and the finished wall alone. Note whether the sound died when the valve closed, because that confirms a supply leak instead of a drain. Open the valve only if you need a toilet or a small water supply and you can watch the stain.
The lines that feed a hot water heater are part of the same closed system we pressure-test. We close the heater valves and watch whether the house gauge still falls. If the drop stops, the leak is on the tank, the pan, or those short connectors. If the drop continues, we go back to the mains and the slab. City water in Snellville is soft to slightly hard, so a drip at the heater is a real leak rather than a harmless mineral crust.
Hidden leak work in Snellville is a pressure and listening job before it is a demolition job, and Snellville Pipe Pros keeps that order on houses, townhomes, and condos. When the pipe is already open, pipe repair takes over from the microphones. When the private service line is too far gone, we move to replacement rather than a chain of clamps.
For a wider list of trades we run besides leak detection, see our plumbing services and the main plumbing in Snellville page. A leak at the tank belongs on hot water heater service, and a flood that cannot wait still goes through emergency plumbing. We stay on 24/7, and we will map the path before we open a floor.
Reach out to us for assistance.
ZIPs we cover: 30039, 30078
