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Where we work in Pennsylvania
Pennsylvania Leak Detection Service Areas
Pennsylvania Leak Detection connects homeowners with local leak technicians in four regions and dozens of towns. Each area has its own ground, housing age and water utility rules, and our local pages explain them.
- South central PA, Bucks and Montgomery, Delaware and Chester, and greater Pittsburgh
- Local water supplier and service line notes for each town
- Answered 24 hours a day, 7 days a week
Calls answered day and night. Emergency? Shut off your main valve first, then call.
Quick answer
Do you cover my town in Pennsylvania?
We cover four regions: the Lancaster, Harrisburg and York area, Bucks and Montgomery County, Delaware and Chester County, and greater Pittsburgh. Every town listed below has its own page. If yours is not listed, call anyway, because local technicians often work the surrounding townships too.
Regions at a Glance
Leaks behave differently across the state. Limestone in the east and south central counties, hillsides and mines in the west, and old housing everywhere shape what a technician finds.
| Region | Main water suppliers | Main local leak factors |
|---|---|---|
| Lancaster, Harrisburg and York | City of Lancaster, Capital Region Water, York Water, Pennsylvania American Water | Karst sinkholes, old row home lines, freeze |
| Bucks and Montgomery | Aqua, Pennsylvania American Water, BCWSA, North Penn, Warminster and Horsham authorities | 1950s slab homes, century old mains, karst in Montgomery County |
| Delaware and Chester | Aqua, Chester Water Authority, Pennsylvania American Water | Colonial era towns, postwar suburbs, Chester County karst |
| Greater Pittsburgh | Pittsburgh Water, Pennsylvania American Water, MAWC, township and city authorities | Landslides, mine subsidence, steep service lines |
The DCNR sinkhole page places karst in southcentral and southeastern Pennsylvania. The DCNR landslide page says southwestern Pennsylvania has by far the most landslides. Homes over old coal mines can buy coverage through the PA DEP mine subsidence insurance program.
Across all four regions, most utilities draw the ownership line at the curb stop. Our service line ownership guide explains what that means for your repair bill, and the high water bill guide covers leak credits by utility.
Lancaster, Harrisburg and York Region
The Lancaster, Harrisburg and York region sits on carbonate rock that DCNR maps as karst, so a leaking line can wash out soil and open a sinkhole. City water systems here put the curb stop to house line on the owner.
Lancaster, Harrisburg and York Region overview
Karst limestone, row home service lines and freeze damage across Lancaster, Dauphin, York and Lebanon counties.
Lancaster, PA
City of Lancaster water customers own the line from the curb stop in, and city code bills customer side leakage at the normal meter rate.
Harrisburg, PA
Capital Region Water covers repair costs from the curb stop to the main, so a pinpointed leak location decides who pays.
York, PA
York Water customers own the line from the curb shut off valve to the house and can buy a $5 a month protection plan.
Lebanon, PA
The Lebanon County seat sits in the Quittapahilla Creek valley; confirm where your supplier’s curb stop ownership ends before hiring a plumber.
Hanover, PA
A York County borough with a limestone quarry just north of town, a reminder to take any sinking yard spot seriously.
Hershey, PA
Built as a company town from 1903 along Spring Creek, Hershey gets municipal services through Derry Township and still has many early 1900s homes.
Ephrata, PA
The Ephrata Area Joint Authority supplies about 8,222 customers from Cocalico Creek and wells, so start a high bill question there.
Elizabethtown, PA
Elizabethtown more than doubled in population from 1950 to 2000, so 19th century borough homes sit beside newer subdivisions with different pipe materials.
Columbia, PA
Columbia’s water system dates to the town’s founding era on the Susquehanna, and its older row homes often hide aging service lines.
Bucks and Montgomery County Area
Bucks and Montgomery County mix 1800s boroughs with 1950s subdivisions like Levittown. Aqua serves much of the area and does not offer leak adjustments in Pennsylvania, so speed matters.
Bucks and Montgomery County Area overview
Levittown slabs, century old Norristown mains, and Aqua and township authority rules north and west of Philadelphia.
Bensalem, PA
Aqua supplies water and BCWSA handles sewer in Bucks County’s southernmost township, where Neshaminy Creek forms the eastern edge.
Abington, PA
Aqua serves this second most populous Montgomery County township, so there are no leak adjustments and fast detection protects the bill.
Levittown, PA
More than 17,000 houses built from 1952 to 1958 make under floor and slab leaks one of the most common Levittown calls.
Norristown, PA
Pennsylvania American Water is replacing century old mains here, and older borough homes often have service lines of similar age.
Warminster, PA
Warminster Municipal Authority serves about 10,300 customers from wells and water bought from North Wales Water Authority.
Warrington, PA
This Bucks township grew from about 1,100 people in 1930 to over 25,000 in 2020, so most homes date from postwar subdivisions.
Pottstown, PA
Laid out in the 1750s on the Schuylkill and incorporated in 1815, Pottstown has historic districts full of older service lines.
King of Prussia, PA
Aqua and Pennsylvania American Water both serve parts of this edge city, so check your bill before you call about a leak credit.
Lansdale, PA
North Penn Water Authority supplies this railroad borough, and its after hours emergency line is 215-855-9945.
Phoenixville, PA
French Creek splits this former Phoenix Iron borough in two, and its older homes sit beside new townhomes built since 2000.
Horsham, PA
Horsham Water and Sewer Authority runs 15 wells and 103 miles of mains for 7,042 customers, with parts served by Aqua.
Willow Grove, PA
Aqua supplies this Abington and Upper Moreland crossroads, where older homes near Old York Road often need service line checks.
Montgomeryville, PA
Grew from about 9,100 people in 1990 to nearly 13,000 in 2020, so leaks here are often fittings, irrigation and newer plastic lines.
Delaware and Chester County Area
Delaware County holds some of the oldest towns in the state, including Chester, incorporated in 1682. Chester County adds limestone valleys where yard leaks deserve fast attention.
Delaware and Chester County Area overview
Colonial era towns along Darby Creek, postwar suburbs and Chester County karst, served by Aqua and Chester Water Authority.
Upper Darby, PA
Counted more than 34,000 housing units in 2000, so calls here range from old service lines to basement plumbing and hidden wall leaks.
Chester, PA
Pennsylvania’s oldest city, incorporated in 1682 on the Delaware River, with aging housing and many long buried service lines.
Drexel Hill, PA
This western Upper Darby neighborhood borders Darby Creek and has homes dating back generations, so check lines and basements.
Springfield, PA
Built out from farmland after 1949, when Stoney Creek began, so many homes now have 60 to 75 year old plumbing.
West Chester, PA
Aqua is inventorying about 1,200 customer lines in the borough and replaces lead or galvanized lines at no direct cost.
Ardmore, PA
Straddles Lower Merion and Haverford townships, with older homes near the rail line that often need service line checks.
Coatesville, PA
Pennsylvania American Water has owned the city’s water system since 2001 and replaces customer lead lines with a 2 year warranty.
Broomall, PA
A Marple Township community along West Chester Pike and Sproul Road, bordered by Darby Creek to the east.
Lansdowne, PA
A former rail resort of Victorian homes where hidden wall leaks and old supply lines are frequent calls.
Darby, PA
Settled by Quakers in 1682 along Darby Creek, Darby has some of the oldest housing and buried plumbing in the region.
Greater Pittsburgh and Western PA
Southwestern Pennsylvania has the highest concentration of landslides in the state, and many homes sit over old coal mines. Moving ground cracks buried pipe, and leaks make slopes worse.
Greater Pittsburgh and Western PA overview
Hillside lots, landslides and old mine ground around Pittsburgh, with Pittsburgh Water’s leak credit rules explained.
Cranberry Township, PA
The township supplies its own water and wastewater, and fast growth since the 1960s means many newer homes and fittings.
West Mifflin, PA
Pennsylvania American Water serves this hilly borough, where filled ravines and steep lots make line tracing tricky.
McKeesport, PA
Built where the Monongahela and Youghiogheny meet, McKeesport has steel era homes whose service lines are often original.
Greensburg, PA
The Westmoreland County seat sits at about 1,000 feet in the Laurel Highlands, so shallow and exposed pipes need winter protection.
Butler, PA
The Butler County seat along Connoquenessing Creek has older city housing where service line and basement leaks are common.
Washington, PA
The Washington County seat grew in an 1880s oil and gas boom, so check gas lines as well as water when something smells off.
New Kensington, PA
The city keeps its own water authority, and its Allegheny River setting and Alcoa era homes bring old line leaks.
Murrysville, PA
Home of the 1878 Haymaker gas well, Murrysville has 36 square miles of hills where long service lines are the norm.
South Park, PA
Pennsylvania American Water serves this quite hilly township, home to a nearly 2,000 acre county park.
Services Available in Every Area
Every region gets the same core services: service line, slab, hidden wall, burst pipe, pool, gas, sewer and high bill investigations, plus 24/7 emergency calls.
Start with water service line leak detection if the meter spins and nothing inside is wet, or slab leak detection if a floor feels warm. See every option on the services page.
Frequently Asked Questions
What parts of Pennsylvania do you cover?
Four regions: the Lancaster, Harrisburg and York area, Bucks and Montgomery County, Delaware and Chester County, and greater Pittsburgh and western PA.
My town is not listed. Can you still help?
Call anyway. Local technicians usually cover surrounding townships, and we will tell you on the phone if your address is in range.
Who owns the water line in most Pennsylvania towns?
With most major utilities, the utility owns the pipe from the main to the curb stop and the homeowner owns the rest. Check your supplier’s rules before hiring anyone.
Which regions have sinkhole risk from leaks?
Karst is common in southcentral and southeastern Pennsylvania, including Lancaster, Lebanon, Montgomery and Chester counties. PA DEP lists leaking water and sewer pipes as a sinkhole cause.
Why are leaks different around Pittsburgh?
Hillsides, landslides and old mine ground move and crack buried pipe. A leak into a slope can also make a slide worse.
Do any utilities give leak credits?
Some do. Pittsburgh Water may reduce a bill caused by an unknown leak once it is repaired, while Aqua says it offers no leak adjustments in Pennsylvania.
Are calls answered at night and on weekends?
Yes. Calls are answered 24 hours a day, 7 days a week in every service area.
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.
Answered 24 hours a day, 7 days a week.
Sources
- DCNR: Sinkholes
- DCNR: Landslides
- PA DEP: Apply for mine subsidence insurance
- PA DEP: What causes a sinkhole
- Aqua leak adjustment request
- Pittsburgh Water: Leak credit
- Pennsylvania American Water lead service FAQs
- Chester Water Authority
- Capital Region Water service line assistance guidance
- NBC10: Parts of PA vulnerable to sinkholes
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.