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Water Line Repair & Leak Detection in Lewisburg PA

A water line problem can silently waste thousands of gallons and cause serious structural damage before you see a single drop. Knauss Plumbing locates leaks with precision — acoustic detection, pressure testing, and non-invasive equipment — so we know exactly where to dig before we touch your yard, walls, or floors.

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Water Line Services in Lewisburg + Union County

Plum Perfect Every Time

From pinpointing a hidden leak to replacing a full water main — every water line service handled with precision throughout Union, Snyder, Northumberland, and Lycoming counties.

Water Line Repair

 

Damaged, corroded, frozen, or leaking supply lines repaired correctly. We locate the problem first — using detection equipment when needed — so we only excavate at the exact failure point. No digging your whole yard to find a pinhole leak.

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Leak Detection & Repair

 
Hidden leaks inside walls, under slabs, or buried in your yard — found with acoustic listening equipment and pressure testing before anything gets cut or excavated. You know where the leak is and what fixing it involves before you make any decision.
 
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Water Line Installation

 
New construction, home additions, or running water to a new location — we size and install your supply lines to code with materials chosen for central Pennsylvania’s climate. From rough-in through final connection.
 
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Slab Leak Detection & Repair

 

 

Pipes running beneath your concrete foundation can fail silently for months. We use acoustic detection to pinpoint slab leaks precisely — then walk you through every repair option, including pipe rerouting, so you understand the tradeoffs before committing to anything.

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Underground Leak Detection

 

Leaks beneath your yard, driveway, or sidewalk can go undetected for months while your water bill climbs and soil saturates around your foundation. Detection equipment finds it precisely — so we excavate only where we know the leak is, not everywhere it might be.

 

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Signs Your Drains Need Professional Attention

Water line leaks are often invisible until they become expensive. These are the signals to watch for — and what each one usually means.

Water bill spiked unexpectedly

 
A sudden or gradual increase in your water bill with no change in usage is the most reliable early sign of a leak somewhere in your system.

Wet or soft spots in your yard

 
Unusually green patches, soggy ground, or sinkholes in your yard — especially in a line between the street and your home — indicate an underground water line leak.

Low water pressure in home

 
When pressure drops at multiple fixtures at once — not just one — a leak or damage in your main supply line is often the cause.

Warm spots on your floor

 
 
 Warm or hot areas on a concrete floor are a classic sign of a hot water slab leak — a pipe beneath the foundation losing water into the concrete.

Sound of running water when nothing is on

 If you can hear water moving inside your walls or floor when all fixtures are shut off, you have water going somewhere it shouldn’t.

Cracks in floors, walls, or foundation

Water saturating the ground beneath your slab causes it to shift. New cracks in flooring, baseboards, or drywall especially near the floor can indicate a slab leak.

Four Types of Water Line Leaks — What Each One Means

Where your leak is determines how we find it and how we fix it. Here’s what each type looks like and what the repair typically involves. 

Supply Line Leak

 
 
Leaking pipe connecting your home to the municipal water supply. Signs: wet yard in a straight line from street to house, low pressure, high bill.
 
Usually requires excavation at the leak point — we locate it first so we only dig where needed.

Underground Leak

 
A leak in buried pipes in your yard, under a driveway, or beneath a patio.
 
Signs: green patches, soggy soil, sinkholes, elevated water bill. Often undetected for months. Detection equipment pinpoints it so excavation is minimal and targeted. 
  

Slab Leak

 
A leak in a pipe running beneath your concrete foundation.
 
Signs: warm floor spots, sound of running water, wet baseboards, unexplained mold or mildew. Most damaging type — foundation erosion can occur over time. We use acoustic detection to find it precisely.

Interior Pipe Leak

 
A leaking pipe inside your walls, ceiling, or under floors. Signs: water stains on drywall, bubbling paint, visible mold, soft flooring.
 
We locate it acoustically before opening walls — only cut into exactly where the leak is. 
 

How We Find and Fix Water Line Leaks

1

You Call, We Answer

Call or use our online form. Choose a time that works for you.

2

Honest Price Before We Start

A licensed tech arrives, diagnoses, and gives a flat price.

3

We Fix it Right

Quality work, clean job site. You approve before we start.

4

We Follow-Up 

We check in after the job. Not satisfied? We come back.

Suspect a leak? Don’t wait.

Water line repair and leak detection throughout Lewisburg and central Pennsylvania. Locate it first. Fix only what’s broken. Flat-rate pricing.

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Here’s What Our Happy Homeowners Think About Knauss Plumbing

Water Line FAQ — Lewisburg, PA

How do I know if I have a water line leak?
The most reliable early signal is an unexplained increase in your water bill. Other signs include low water pressure at all fixtures simultaneously, the sound of running water when everything is off, warm spots on your floor, wet areas in the yard, or water stains on walls and ceilings. If you’re seeing any of these, call us — we can often help you gauge the urgency over the phone before coming out. (570) 568-1851
Can you find a leak without tearing up my yard or floors?
Yes. We use acoustic listening equipment and pressure testing to locate leaks non-invasively before any digging or cutting begins. We know exactly where the leak is before we open anything. That means we only disturb what we absolutely have to — not your entire yard looking for a problem that’s in one spot.
How much does water line repair cost in Lewisburg, PA?
Costs vary widely depending on the type of leak, its location, and the repair method. A simple accessible supply line repair runs much less than a slab leak requiring concrete work. We give you a flat price for each option after locating the problem precisely — so you understand what you’re paying for and why. Call us and describe what you’re experiencing and we can give you a general range before coming out.
What is pipe rerouting and when does it make sense?
Pipe rerouting means running a new supply line through your attic, crawl space, or walls — bypassing the damaged section entirely without breaking concrete. It makes sense when the slab leak is under a difficult-to-access area, when the existing pipes are in poor overall condition and likely to fail again, or when avoiding concrete work is a priority. We explain when rerouting is a smart choice and when direct repair is the better call — and we don’t push one over the other.
Are central PA homes more prone to water line leaks?
Yes — for a few reasons. Pennsylvania’s freeze-thaw cycle puts significant stress on supply lines every winter, particularly pipes in uninsulated areas or near the foundation. Older housing stock throughout Lewisburg, Sunbury, Milton, and Danville frequently has galvanized steel or early copper supply lines well past their design lifespan. And in rural areas, private well systems with aging components are a common source of supply line failures. We see these issues throughout our service area every season.
Do you handle well water supply lines as well as municipal water lines?
Yes — Knauss Plumbing handles both. Many properties throughout Union, Snyder, and Northumberland counties are on private well water rather than municipal supply. We repair and replace the supply lines running from the well to the home, and we also handle well pump repair and replacement, pressure tank service, and water treatment for well-water properties. Learn more about our well pump services →

Drain Cleaning in Lewisburg & Central PA

Local plumbing backed by people who actually live here

Danville
Sunbury
Lewisburg
Northumberland
Selinsgrove
Milton
Muncy
Mifflinburg
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Shamokin Dam
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Water Line Repair and Leak Detection in Lewisburg PA

Locate it first. Fix only what’s broken. Flat-rate pricing. PA licensed.

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