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Leak Detection in McKeesport, PA

McKeesport sits where the Monongahela meets the Youghiogheny, with hillside streets, and many were built when the city had three times today’s population. Your water comes from the Municipal Authority of Westmoreland County, your sewer from Pennsylvania American Water, and the pipe in between the curb and the cellar is yours.

Hillside service lines traced and pinpointed before anyone digs
Written findings for your one-time MAWC underground leak adjustment
Basements, slabs, laterals and vacant-property lines in 15132

Call (833) 768-3032

How it works

Calls answered day and night. Emergency? Shut off your main valve first, then call.

Quick answer

Does MAWC fix a leaking water line at my McKeesport house?

Only up to the curb stop. The Municipal Authority of Westmoreland County maintains the connection from the main through the curb stop and box. The line from the curb stop into your house is yours to maintain. MAWC gives one underground leak adjustment per property, so get the leak documented. Call (833) 768-3032.

15132McKeesport ZIP code (Wikipedia)

55,355peak population in 1940, versus 17,727 in 2020 (Wikipedia)

9,510housing units, ACS 2024 5-year (Census Reporter)

10 MGDMAWC’s McKeesport treatment plant, opened 1990 (MAWC)

Two utilities, one hillside: how water and sewer work in McKeesport

McKeesport is unusual. Drinking water comes from the Municipal Authority of Westmoreland County, which runs a treatment plant in the city. The sewer system was sold to Pennsylvania American Water in 2017. So a leak can mean calls to two different companies, plus a repair that is entirely on you.

MAWC lists its McKeesport plant, opened in 1990 with 10 million gallons a day of capacity, among its three treatment plants on its facts and figures page. The authority serves more than 120,000 water customers across a five-county region.

Sewer is a different story. Pennsylvania American Water bought the wastewater system of the Municipal Authority of the City of McKeesport for about $159 million, with the deal reported complete in December 2017, according to WaterWorld. That system served about 22,000 customers in 13 Allegheny County municipalities.

Pennsylvania American Water’s rate page places McKeesport in its own wastewater zone, labeled Kane McKeesport. So when you see two bills, that is why.

What you need	Who to call in McKeesport
Water main break, no water, low pressure, boil notices	MAWC, 724-755-5800
Water bill, meter, one-time underground leak adjustment	MAWC
Sewer bill or a public sewer backup	Pennsylvania American Water
Leak in your service line, under your floor or in your walls	You: a leak detection technician, then your plumber
Gas odor	Leave, then call 911 and Peoples at 1-800-400-4271

Knowing which side of the curb stop the leak is on decides who pays. That is what leak detection settles.

Why McKeesport homes leak

Most McKeesport leaks trace back to old pipe, steep ground and empty neighbors. Much of the housing went up when the city was a steel town of more than 55,000 people. Service lines climb hills, and when a vacant house next door loses its plumbing, water can show up on your side.

McKeesport was incorporated as a borough in 1842 and a city in 1891, per its Wikipedia entry. National Tube opened in 1872 and closed in 1987 along with other U.S. Steel plants in the Mon Valley. Population peaked at 55,355 in 1940 and was 17,727 by 2020.

That drop leaves a lot of old housing and a lot of empty houses. Census Reporter counts 9,510 housing units, a median owner-occupied value of $72,700 and a poverty rate of 32 percent in the 2024 five-year estimates. On a house worth that, one bad leak can be a serious share of the home’s value.

Pipe you will find in McKeesport houses

Era of plumbing	Likely material	Common McKeesport problem
Steel-town era, before 1930	Lead service lines, cast iron drains	Old lead or iron in the yard; drain stacks cracked at the basement floor
1930s to 1950s	Galvanized steel supply	Rust inside the pipe, low pressure, threaded joints that start to weep
Postwar to 1980s	Copper, cast iron and clay laterals	Pinholes on copper against block walls; root and joint failures in clay sewer laterals
Renovations since	PEX, CPVC, newer copper	Mixed-material fittings and freeze splits in unheated rooms

Material by era is general guidance, not a survey of McKeesport homes.

MAWC’s own rules require new water service applicants to certify that no lead exists in the premises, which tells you the authority knows older homes still have it.

Hillside service lines in McKeesport

On a McKeesport hillside, a leak rarely surfaces where the pipe broke. Water follows the old trench downhill, runs down steps and retaining walls, and pops out at the low side of the lot or in a neighbor’s basement. Pinpointing with sound and tracer gas avoids digging up half a steep yard.

You can see the problem in local news. In August 2017, a main broke around midnight in the 2600 block of Oak Street. KDKA reported the main was on a hillside, water ran down a set of steps, and firefighters built a dam with hoses to keep it out of nearby homes.

A private service line leak behaves the same way, only slower. It saturates the soil, finds the easiest path and shows up as a wet basement wall at the downhill house, sometimes not your own.

How hills complicate finding the leak

Long service runs climb from the street, so the line may be 50 feet or more and change depth along the way.
Steps, retaining walls and terraces sit on top of the line, which makes guess-digging expensive.
Leak noise carries along pipe differently on a slope, so the technician listens at several points and compares.
Saturated hillside soil can slip. PA DEP lists leaking water and sewer pipes as a human cause of sinkholes.

Sinkhole cause from PA DEP.

MAWC’s rules require customer service lines to have at least four feet of cover, and the authority may require a meter pit where a customer line exceeds 100 feet. On many older hillside lots, the line predates those rules, which is one more reason to locate it before digging.

The service built for this is water service line leak detection. The technician maps the pipe route with a locator, then narrows the leak with ground microphones and hydrogen tracer gas where the soil is wet or the line is deep.

Vacant houses and shared walls

A vacant house next door can leak into yours. If its water was never shut off at the curb, a frozen pipe or failed fixture inside can run for weeks. On attached or close-set homes, that water travels through the ground or a shared wall and shows up in your basement as if it were your leak.

This comes up in McKeesport more than in most suburbs. In May 2018, KDKA reported a broken water line on Beech Street; while MAWC crews worked on it, a gas service line to an abandoned house was damaged and then repaired, with no gas leak.

The lesson is that old service lines to empty properties are still in the ground and still connected. Before you pay to dig your own yard, a technician can test whether your system is losing water at all.

Close your main valve and watch your meter. If it is still, your plumbing is tight.
If your meter is still but your basement is wet, the water is coming from outside your system: a neighbor’s line, a main, a sewer lateral or groundwater.
A technician can then listen at the curb boxes and use moisture readings to show where the water is coming from.
Bring the findings to MAWC if a curb box or main is involved, or to the city if the property is abandoned.

For the inside of shared walls, see hidden wall and ceiling leak detection. For multi-unit buildings and storefronts, see commercial and multifamily leak detection.

Signs of a hidden leak in a McKeesport home

Watch for a meter that moves with everything off, a MAWC bill that jumps for no reason, damp spots along the uphill basement wall, water in the curb box, and soggy ground or new cracks in a walk below your house. A sewer smell or slow drains point to the lateral instead.

Bill and meter

Usage up with no change in household
Meter indicator turning with all taps off
Low pressure that came on gradually

Basement

Wet stain on the uphill wall, often where the line enters
Efflorescence on block
Puddles near the floor drain with no rain

Yard, steps and curb

Water standing in the curb box
Wet steps or wall faces downhill from the line
New settling in a walk or patio

Sewer and drains

Sewer smell in the basement
Gurgling or slow drains on the lowest level
Damp soil over the lateral

The EPA says a family of four using more than 12,000 gallons a month in winter probably has a serious leak. Compare a winter MAWC bill with the same month last year.

If drains and smells are the problem rather than the meter, sewer lateral leak detection uses a camera and sonde to find the crack.

How the visit works

The technician confirms the leak at the meter, isolates the service line from the house plumbing, then locates the break with acoustic tools, a pipe locator, thermal imaging and tracer gas as needed. You get the spot marked and written findings that MAWC, your plumber and your insurer can use.

1

Phone call

Describe the problem. We connect you with a local technician who works McKeesport and quote the visit on the call.

2

Meter and pressure

Confirm a loss and its rate, then split the system: service line, supply piping, fixtures.

3

Locate

Route the line, listen on the surface, use tracer gas on deep or wet hillside runs.

4

Mark and document

Paint or flag the spot, photos, depth estimate, and a written report.

What goes in the report

Meter readings with times, showing the leak rate
Whether the leak is between the curb stop and the house (your side) or toward the street
Location, photos and approximate depth
Pipe material observed, such as lead, galvanized or copper
Notes for the plumber on access, steps or walls over the line

That report is what you will want when you ask MAWC for its one-time underground leak adjustment.

Who owns the line, and how to use MAWC’s one-time leak adjustment

MAWC maintains the connection from the main through the curb stop and box. The customer owns and maintains the line from the curb stop to the house. The authority makes one underground leak adjustment per property for a curb box setting or underground service line leak. After that, leak water is on the customer.

Piece of the system	Owner under MAWC rules	Notes
Main and connection through the curb stop and box	MAWC	Authority maintains it and thaws it to the curb stop at its own cost
Curb stop to the house	Customer	Installed and maintained by the customer, at least four feet of cover
Meter	MAWC property, customer liable for damage	Customer pays to repair a frozen meter
House plumbing	Customer	MAWC is not liable for frozen customer piping

From MAWC’s rules and regulations and billing information.

Making the one adjustment count

Confirm the leak is underground: a meter that moves with the house main closed points to the service line.
Have it located and get the written findings.
Repair it promptly. MAWC’s rules say leaks must be repaired immediately or service may be discontinued.
Contact MAWC at 724-755-5800 with the report and repair invoice and ask for the underground leak adjustment.
If you think the meter itself is wrong, you can request a meter test. If it is accurate you pay the test fee; if not, MAWC pays and corrects the bill.

MAWC makes no allowance for water lost through the meter from indoor leaks like running toilets. The one-time adjustment covers underground leaks only, and only once per property.

For lead, MAWC runs a service line inventory. You can search your address on its public inventory map, send a photo of your line, or call its lead hotline at 724-755-5858 (MAWC lead facts). Allegheny County Health Department rules do not allow partial lead line replacements, so coordinate any lead work.

What a leak costs on a McKeesport water bill

MAWC’s 5/8 inch meter minimum is $24.64 a month with 1,000 gallons included, and water beyond that is $10.30 per 1,000 gallons, effective April 1, 2025. A small leak of a tenth of a gallon a minute adds about $44 a month in water charges.

Arithmetic using MAWC’s published water rates, assuming your normal use already covers the included 1,000 gallons.

Leak rate	Extra gallons in 30 days	Extra MAWC water charge at $10.30 per 1,000 gal
0.1 gal/min	4,320	about $44
0.25 gal/min	10,800	about $111
1.5 gal/min	64,800	about $667
2.5 gal/min	108,000	about $1,112

Water only. Sewer from Pennsylvania American Water and any taxes or surcharges are extra.

Detection itself runs roughly $150 to $600 nationally, and a slab leak repair averages about $2,300, per This Old House. The McKeesport visit is quoted on the phone. Our high water bill guide compares leak credit rules across Pennsylvania utilities.

McKeesport water events worth knowing

McKeesport has seen hillside main breaks, a treatment plant outage with a boil water advisory, and a 2025 cold snap that forced MAWC to order conservation. Each one is a reminder to know where your shutoff is and to recheck your own plumbing afterward.

When	What happened
August 2017	Hillside main break on Oak Street sends water down steps and floods at least one home
May 2018	Broken line on Beech Street damages the road and cuts service to some customers
Undated (TribLive)	Intake pump problem shuts the McKeesport plant; boil advisory for McKeesport, Versailles and Port Vue; 16,000+ asked to conserve
January 28, 2025	MAWC requires conservation on its McKeesport system as a cold snap causes leaks and demand spikes
March 14, 2026	Main break near Walnut Street disrupts service; MAWC estimates six to eight hours of repairs

Sources: KDKA 2017, KDKA 2018, TribLive, KDKA 2025, WPXI 2026.

After a shutoff or boil notice, air and sediment move through the lines. If a toilet starts running or the meter keeps creeping once service is back, check it rather than assuming the utility will catch it.

Winter in McKeesport

Cold snaps hit McKeesport’s water system hard. In January 2025, MAWC said customers were running water to keep pipes from freezing while crews chased leaks across 2,400 miles of line. Keep pipes warm with insulation and heat, not open taps, unless the authority says otherwise.

KDKA reported that MAWC’s resident manager described crews chasing leaks and struggling to keep water in the systems during that January 2025 cold spell. Thousands of dripping faucets add real demand to a system already losing water through broken mains.

Insulate supply lines along exterior basement walls and in any crawl space.
Seal gaps where the service line enters the foundation.
Keep the heat on in vacant or seasonal properties, or shut off and drain them at the curb.
Under MAWC rules, thawing from the curb stop to the house is the customer’s cost, and a frozen meter is billed to the customer.

When a pipe has frozen, shut the main before it thaws, then have burst pipe leak detection check for hidden cracks. Our frozen pipe guide covers prevention.

Gas safety and quick checks for McKeesport homeowners

Peoples serves McKeesport gas customers; its emergency line is 1-800-400-4271, around the clock. If you smell gas, get out first, then call 911 and Peoples from outside. For water, a meter check, a toilet dye test and a look at the curb box answer most questions in 15 minutes.

Gas odor: leave first, call from outside

Peoples emergency line 1-800-400-4271 (Peoples safety), and 911. Do not use switches, phones or garage door openers inside, and do not try to find the source.

Peoples crews responded to the 2018 Beech Street water line work, which is how we confirmed it serves the city. If your bill shows a different company, use that number instead. Before digging, call PA811 three business days ahead (PA PUC). For customer-side gas line testing, see gas line leak detection.

Quick water checks

All water off, watch the meter for 15 minutes.
Dye in each toilet tank; color in the bowl within 10 minutes means a leak (EPA).
Close the house main. Meter still moving means the service line.
Lift the curb box lid if you can. Standing water there is a strong clue.

Still stuck? Call (833) 768-3032. More towns are listed on the Greater Pittsburgh page, or start at the home page.

Leak Detection Services in McKeesport, PA

Every leak detection service below is available in McKeesport, 24 hours a day. Each link explains the testing method, what goes in the written report and the repair options; the sections above cover what is different about McKeesport. See the full services list for a side by side overview.

Slab Leak Detection

Leaks under basement floors and slab additions, pinpointed through the concrete.

Water Service Line Leak Detection

The line from the curb stop or main to your house, traced and pinpointed.

Hidden Wall and Ceiling Leak Detection

Leaks behind plaster, drywall and finished basements, found without demolition.

Frozen and Burst Pipe Leak Detection

Every freeze crack found after a cold snap, including the ones not dripping yet.

Pool and Hot Tub Leak Detection

Lines, skimmers, returns, lights and shells tested so every leak point is found.

Gas Line Leak Detection

Customer-side gas leaks and failed pressure tests located for repair.

Sewer Lateral and Drain Leak Detection

Camera, sonde, smoke and flood testing for cracked laterals and drains.

Shower Pan, Tub and Toilet Leak Detection

Flood and dye testing so the right fixture gets fixed.

Irrigation and Outdoor Line Leak Detection

Zone by zone testing of sprinklers, yard hydrants and outdoor lines.

High Water Bill Leak Investigation

Meter, pressure and fixture testing plus a report for your utility.

Commercial and Multifamily Leak Detection

Risers, shared lines and tenant units traced to the source.

24/7 Emergency Leak Detection

Water through a ceiling or a meter spinning hard, answered any hour.

Call (833) 768-3032

Other Areas We Cover Near McKeesport

West Mifflin

Leak detection in West Mifflin, PA

South Park

Leak detection in South Park, PA

Murrysville

Leak detection in Murrysville, PA

Greensburg

Leak detection in Greensburg, PA

New Kensington

Leak detection in New Kensington, PA

See every town we cover in the Greater Pittsburgh and Western PA, or browse all Pennsylvania service areas.

Guides worth reading before you book

Frequently Asked Questions

Who is McKeesport’s water company?

The Municipal Authority of Westmoreland County supplies McKeesport’s drinking water and runs a treatment plant in the city. Its number is 724-755-5800.

Then why do I get a Pennsylvania American Water bill?

Pennsylvania American Water bought McKeesport’s wastewater system in 2017, so it bills for sewer. Water still comes from MAWC.

Who pays for a leak in my service line?

You do, if it is between the curb stop and the house. MAWC maintains the connection from the main through the curb stop and box.

Does MAWC give leak credits?

MAWC makes one underground leak adjustment per property for a curb box setting or underground service line leak. It does not credit indoor leaks, and later underground leaks are the customer’s cost.

How much does a leak cost on a MAWC bill?

Water beyond the included 1,000 gallons is $10.30 per 1,000 gallons. A steady 0.25 gallon per minute leak adds about 10,800 gallons, or about $111, in a 30-day month before sewer.

Does MAWC replace lead service lines?

Its lead page does not describe a replacement program. It runs a service line inventory with a public map and a lead hotline at 724-755-5858.

My basement is wet but my meter is still. What now?

Your plumbing is probably tight, and the water is coming from outside it: a neighbor’s line, a main, a sewer lateral or groundwater. A technician can help trace the source.

Who thaws a frozen service line?

Under MAWC rules, the authority thaws to the curb stop at its own cost. Thawing from the curb stop to the house is the customer’s cost.

Can mine subsidence affect my pipes?

Standard homeowners policies usually exclude mine subsidence. Pennsylvania’s Mine Subsidence Insurance has a risk map and costs about 27 cents per $1,000 of coverage for homes.

Do plumbers need a license in McKeesport?

Allegheny County Health Department licenses plumbers by exam and does not allow partial lead line replacements.

What ZIP code does McKeesport use?

McKeesport uses 15132, and we cover the whole city.

Hearing Water You Cannot See? Call Now.

A rising water bill, a wet basement wall or a soggy strip of lawn will not fix itself. Call any hour and we will help you find the leak, prove it and keep the repair as small as possible.

Call (833) 768-3032

Answered 24 hours a day, 7 days a week.

Sources

Pennsylvania Leak Detection is a leak detection referral service. Calls connect you with an independent local leak detection professional. Figures and utility policies were checked in October 2026 and can change; confirm with your utility.