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Backflow Testing in Pennsylvania
Backflow Testing across Pennsylvania: the 1,233 ZIP codes and 972 cities we route calls in, and who licenses plumbers in the state.
Free to homeowners in Pennsylvania — the contractor pays us for the introduction, you never do.
Who has to test
Our backflow testing coverage in Pennsylvania runs to 1,233 ZIP codes in 972 cities. Where the covered places are many and small, the testing duty is set by whichever water utility serves the connection, so two houses a mile apart can sit under different rules and different annual deadlines.
Source: coverage area as published by our call partner; place and county names from the US Census Bureau.
We route backflow testing calls in 1,233 ZIP codes across 972 Pennsylvania cities, in 50 counties.
What this site is
CrossConnect is a referral service, not a contractor. We connect property owners and managers with independent contractors. Backflow assembly testing is normally restricted to testers holding a specific certification and using calibrated equipment, and the report usually has to reach your water purveyor — ask to see the certification and ask who files the report. We carry out no testing, we certify nobody, we do not set prices, and we never charge callers anything. Nothing here selects a device for any installation or states that any assembly is passing.Checking a credential in Pennsylvania
Pennsylvania has no state license for plumbers. Its Department of Labor and Industry states it has no jurisdiction and keeps no records of which municipalities require one, so the only reliable answer is your own city or township. Start here. Ask the contractor which municipality licenses them and confirm it with that office before work begins.
18 of the 50 Pennsylvania counties we cover, from the top of the alphabet
- Adams County 15 ZIP codes
Abbottstown, Arendtsville, Aspers, Bendersville, Biglerville, East Berlin, Fairfield, Gardners, Gettysburg, Littlestown, McKnightstown, McSherrystown, New Oxford, Orrtanna and 1 more - Allegheny County 56 ZIP codes
Pittsburgh, Warrendale, Allison Park, Bakerstown, Bethel Park, Bradfordwoods, Bridgeville, Carnegie, Clairton, Coraopolis, Cuddy, Gibsonia, Glenshaw, Homestead and 13 more - Armstrong County 1 ZIP code
Parker - Beaver County 12 ZIP codes
Aliquippa, Ambridge, Baden, Beaver, Beaver Falls, Fombell, Freedom, Industry, Koppel, Monaca, New Brighton, Rochester - Bedford County 23 ZIP codes
Alum Bank, Artemas, Bedford, Breezewood, Buffalo Mills, Clearville, Defiance, Everett, Fishertown, Hopewell, Hyndman, Imler, Loysburg, Manns Choice and 9 more - Berks County 51 ZIP codes
Reading, Bally, Barto, Bechtelsville, Bernville, Bethel, Birdsboro, Blandon, Bowers, Boyertown, Centerport, Douglassville, Fleetwood, Geigertown and 26 more - Blair County 16 ZIP codes
Altoona, Bellwood, Claysburg, Curryville, Duncansville, East Freedom, Hollidaysburg, Martinsburg, Newry, Roaring Spring, Sproul, Tipton, Tyrone, Williamsburg - Bucks County 53 ZIP codes
Levittown, Doylestown, Warminster, Bensalem, Bristol, Buckingham, Carversville, Chalfont, Croydon, Dublin, Erwinna, Fairless Hills, Feasterville Trevose, Ferndale and 33 more - Butler County 20 ZIP codes
Butler, Connoquenessing, Cranberry Township, Evans City, Harmony, Lyndora, Mars, North Washington, Petrolia, Portersville, Prospect, Renfrew, Sarver, Saxonburg and 4 more - Cambria County 49 ZIP codes
Johnstown, Cresson, Ashville, Beaverdale, Belsano, Blandburg, Carrolltown, Cassandra, Chest Springs, Colver, Dunlo, Dysart, Ebensburg, Elmora and 27 more - Carbon County 12 ZIP codes
Albrightsville, Aquashicola, Ashfield, Beaver Meadows, Bowmanstown, Jim Thorpe, Lansford, Lehighton, Palmerton, Parryville, Summit Hill, Weatherly - Centre County 31 ZIP codes
State College, Aaronsburg, Bellefonte, Blanchard, Boalsburg, Centre Hall, Clarence, Coburn, Fleming, Howard, Julian, Lemont, Madisonburg, Milesburg and 14 more - Chester County 40 ZIP codes
West Chester, Pottstown, Atglen, Avondale, Berwyn, Brandamore, Chester Springs, Coatesville, Cochranville, Devon, Downingtown, Elverson, Exton, Glenmoore and 22 more - Clearfield County 4 ZIP codes
Coalport, Houtzdale, Madera, Morrisdale - Clinton County 2 ZIP codes
Loganton, Mill Hall - Columbia County 11 ZIP codes
Aristes, Benton, Berwick, Bloomsburg, Catawissa, Mifflinville, Millville, Numidia, Orangeville, Stillwater, Wilburton - Cumberland County 19 ZIP codes
Camp Hill, Carlisle, Mechanicsburg, Boiling Springs, Enola, Grantham, Lemoyne, Mount Holly Springs, Newburg, Newville, Plainfield, Shippensburg, Summerdale, Walnut Bottom - Dauphin County 39 ZIP codes
Harrisburg, Dauphin, Elizabethville, Grantville, Gratz, Halifax, Hershey, Highspire, Hummelstown, Lykens, Middletown, Millersburg, Wiconisco, Williamstown
32 more Pennsylvania counties are inside the coverage area and are not listed here. If your ZIP code is in Pennsylvania, the call reaches a contractor.
What that coverage looks like
The 50 counties in our Pennsylvania footprint are served by many separate water suppliers, and each one decides which premises must test and how often. Delaware County, with 132 covered ZIP codes, is the largest single block of them; Philadelphia alone holds 87.
How a backflow testing job goes
A backflow test is a scheduled job that ends in a document. The assembly is isolated, the differential across it is measured, the result is written down, and the report goes to whoever requires it. A failed test means a repair or a rebuild and then a re-test; it does not mean the premises closes that day.
What the call asks about backflow testing
- What kind of premises it is and what is connected to the supply — irrigation, a boiler, a fire line, a commercial kitchen.
- Who is asking for the test: a water supplier, a health department, or a landlord.
- Whether there is an existing assembly with a serial number on it, and when it was last tested.
Every Pennsylvania city we route in
212 cities, ordered by the share of buildings with twenty or more units. Containment assemblies are required building by building, and that is where the buildings are. Each page carries that city’s own numbers and the ZIP codes we route there.
- Wyncote 49%
- King of Prussia 43%
- Bala Cynwyd 29%
- Wynnewood 26%
- Jenkintown 26%
- Bryn Mawr 24%
- Glen Mills 22%
- Conshohocken 22%
- State College 21%
- Lafayette Hill 18%
- Media 18%
- Narberth 18%
- Willow Street 18%
- Warminster 16%
- Devon 16%
- Plymouth Meeting 16%
- Norristown 15%
- Croydon 15%
- Elkins Park 15%
- Huntingdon Valley 15%
- Philadelphia 15%
- Bensalem 14%
- Swarthmore 14%
- Exton 14%
- Pittsburgh 13%
- Newtown Square 13%
- Hatboro 13%
- Upper Darby 12%
- Bridgeville 12%
- Lansdale 12%
- Phoenixville 12%
- Cranberry Township 11%
- Clifton Heights 11%
- Hershey 11%
- Slippery Rock 11%
- Ardmore 11%
- Willow Grove 11%
- Hatfield 11%
- Drexel Hill 11%
- Elizabethtown 11%
- Zelienople 10%
- New Holland 10%
- Fairless Hills 10%
- West Chester 10%
- Malvern 10%
- Horsham 10%
- Lansdowne 9%
- Allentown 9%
- West Mifflin 9%
- Sharon 9%
- Wallingford 9%
- Columbia 9%
- Rochester 9%
- West Grove 9%
- Langhorne 9%
- Camp Hill 9%
- Chadds Ford 9%
- Indiana 9%
- Philipsburg 9%
- Bethel Park 8%
- Lititz 8%
- Oakmont 8%
- Warrington 8%
- Millersville 8%
- Ambler 8%
- Sharpsville 8%
- Lancaster 8%
- Middletown 8%
- Allison Park 8%
- Sewickley 8%
- Sunbury 8%
- Oxford 8%
- Telford 8%
- Carnegie 8%
- Wayne 7%
- Ridley Park 7%
- Bethlehem 7%
- Harleysville 7%
- Harrisburg 7%
- Wernersville 7%
- Homestead 7%
- Williamsport 7%
- South Park 7%
- Bloomsburg 7%
- Sellersville 7%
- Reading 7%
- Berwyn 7%
- Tamaqua 7%
- Lewisburg 7%
- Blue Bell 7%
- Palmerton 7%
- Mechanicsburg 6%
- Chester 6%
- Bristol 6%
- Johnstown 6%
- Washington 6%
- Feasterville Trevose 6%
- Kennett Square 6%
- Myerstown 6%
- Glenmoore 6%
- Levittown 6%
- Whitehall 6%
- Shippensburg 6%
- Paoli 6%
- Altoona 6%
- Canonsburg 6%
- Scranton 6%
- Royersford 6%
- Doylestown 6%
- York 6%
- Palmyra 6%
- Honey Brook 6%
- Catasauqua 6%
- Marcus Hook 6%
- Hollidaysburg 6%
- Coraopolis 6%
- Shamokin 6%
- Easton 5%
- Annville 5%
- Downingtown 5%
- Souderton 5%
- Quarryville 5%
- Blairsville 5%
- Hermitage 5%
- McKeesport 5%
- Bedford 5%
- Pottsville 5%
- Ambridge 5%
- Wexford 5%
- Southampton 5%
- Duncansville 5%
- Breinigsville 5%
- North Wales 5%
- Grove City 5%
- Monaca 5%
- Selinsgrove 4%
- Beaver Falls 4%
- Boyertown 4%
- Hummelstown 4%
- Broomall 4%
- Ebensburg 4%
- Coal Township 4%
- Berwick 4%
- Chambersburg 4%
- McKees Rocks 4%
- Butler 4%
- Spring City 4%
- Red Lion 4%
- Marietta 4%
- Beaver 4%
- Pottstown 4%
- Carbondale 4%
- Glenolden 4%
- Oakdale 4%
- Morrisville 4%
- Sharon Hill 4%
- Stewartstown 4%
- Aliquippa 4%
- Collegeville 4%
- Tyrone 4%
- Coatesville 4%
- Northampton 4%
- Brookhaven 4%
- Havertown 4%
- Schwenksville 4%
- Clarks Summit 4%
- New Castle 4%
- Danville 4%
- Drums 3%
- Darby 3%
- Nazareth 3%
- Douglassville 3%
- Hamburg 3%
- Chalfont 3%
- Mars 3%
- Lebanon 3%
- Emmaus 3%
- Slatington 3%
- New Brighton 3%
- Bangor 3%
- Moscow 3%
- Huntingdon 3%
- Hellertown 3%
- Windber 3%
- Mount Joy 3%
- Center Valley 3%
- Perkasie 3%
- Bellefonte 3%
- New Oxford 3%
- Ephrata 3%
- Glenshaw 3%
- Carlisle 3%
- Lewistown 3%
- Quakertown 3%
- Jamison 3%
- Hazleton 3%
- Somerset 2%
- Hanover 2%
- Mercer 2%
- Greenville 2%
- Bath 2%
- Gibsonia 2%
- Clairton 2%
- Mercersburg 2%
- Ellwood City 2%
- New Hope 2%
- Coopersburg 2%
- Landisville 2%
- Newtown 2%
- Schuylkill Haven 2%
- Glenside 2%
- Mountville 2%
Before you call
A test is a scheduled job with a report at the end of it, not a repair. What the report has to show, and who it goes to, are on the pages above.
